The invention refers to a photometric process measurement arrangement (10) with a photometric immersion probe (20). The photometric immersion probe (20) comprises a photometer flashlight source (61) for providing photometric light impulses with a continuous spectrum, an impulse energy capacitor (33) for storing the electric impulse energy and having an actual electric capacitors voltage (U), an impulse ignition switch (36) electrically arranged between the impulse energy capacitor (33) and the photometer flashlight source (61), an ignition voltage memory (45) memorizing an ignition voltage value (Ui), and a falling-edge ignition trigger (42) which closes the impulse ignition switch (36) in the moment when the falling actual electric capacitors voltage (U) equals the memorized ignition voltage value (Ui).
G01N 21/85 - Investigating moving fluids or granular solids
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
The invention refers to a photometric process measurement arrangement (10) with a photometric immersion probe (20) being electrically supplied with a probe supply voltage (Us) and comprising: a photometer flashlight source (61), an impulse energy capacitor (33), an electronic flyback-converter (30) for successively electrically charging the impulse energy capacitor (33) with numerous charging voltage quantums (Uq), whereas the flyback-converter (30) is provided with a converter switch (31) between a converter supply voltage port (80) and a transformer (32), and a switching signal generator (49) for driving the converter switch (31) with a switching signal and comprising a standard duty cycle signal generator (44) for driving the converter switch (31) with a standard duty cycle value (D1) and comprising a boost duty cycle signal generator (45) for alternatively driving the converter switch (31) with a higher boost duty cycle value (D2), when the boost duty cycle signal generator (45) is activated. The switching signal generator (49) is provided with a supply voltage comparator (46) continuously comparing the probe supply voltage (Us) at the converter supply voltage port (80) and the memorized boost voltage value (Ub). The switching signal generator (49) activates the boost duty cycle signal generator (44) if the supply voltage comparator (46) determines that the supply voltage (Us) is below the boost voltage value (Ub).
G01N 21/85 - Investigating moving fluids or granular solids
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
The invention refers to a process water sampling immersion probe (10) comprising a filter module (20) comprising a plane filter screen (22, 23) and a sample suction opening (28) through which filtered sample water is pumped from the filter module (20) to an analyzer unit (80), and a rigid holding structure (90) for holding the filter module (20), wherein a swivel bearing arrangement (30) is provided, the swivel bearing arrangement (30) defining a static swivel axis (R) and connecting the filter module (20) with the rigid holding structure (90), so that the filter module (20) can swivel within a swivel sector (S) having a swivel angle of at least 10°.
The invention relates to a process water sampling immersion probe (10) comprising a filter module (20) comprising a filter screen (24, 24') and a cleaning air generator (40) arranged vertically adjacent to the vertical lower end (d24) of the filter screen (24, 24'), wherein the cleaning air generator (40) comprises a bubble generator housing (41) with an air exit opening (51, 52) having a non-horizontal opening plane (p54), wherein the air exit opening (51, 52) widens vertically downwardly so that the air exit opening top width (wt54) at the openings top end (t54) is smaller than the air exit opening down width (wd54) at the openings lower end (d54).
The invention refers to a sample preparation arrangement (30) for preparing a water sample for a process water sample analyzer (70), the sample preparation arrangement (30) comprising an immersion filter probe (20) arranged in a water basin (12), the immersion filter probe (20) comprising a sample filter membrane (24), a peristaltic hose sample pump (40) for pumping a water sample from the immersion filter probe (20) to the process water sample analyzer (70), the sample pump (40) comprising a peristaltic pump hose (42) and a pump motor (46) driving a peristaltic pump rotor (44), a water flow sensor arrangement (50) being fluidically arranged in-line with the sample pump (40) and the water sample analyzer (70), a hydrostatic pressure memory (64) for memorizing a static hydraulic pressure (SP) caused by the vertical pump height (H) between the sample pump (40) and the water level surface (14′) in the water basin (12), and a pressure sensor (80) fluidically arranged between the immersion filter probe (20) and the sample pump (40).
The invention refers to a method for determining a cuvette form correction value (F) for a laboratory analysis cuvette (10) filled with a liquid reagent (60) and having a transparent cuvette body (12) comprising a vertical wall (14) and a bottom wall (13), comprising the method steps: Determining the liquid reagent volume (V) of the liquid reagent (60) filled into the laboratory analysis cuvette (10), optically determining the liquid reagent level (H) of the liquid reagent (60) in the laboratory analysis cuvette (10) by a level determination camera (24), calculating a horizontal inner width (D) of the laboratory analysis cuvette (10) from the determined liquid reagent volume (V) and the determined liquid reagent level (H) by an electronic control (26), and calculation of the form correction value (F) from the calculated horizontal inner width (D) and a reference inner width (D′) of the laboratory analysis cuvette (10) by the electronic control (26).
The invention refers to an ammonium analyzer arrangement (10) with an electronic controller (60) and a measurement unit (20). The measurement unit (20) comprises a sample chamber (22) filled with a chamber liquid (22') being a sample liquid (23) or a calibration liquid (43), comprises a gas-selective electrode unit (30) with an electrolyte chamber housing (31) filled with an electrolyte liquid (34), comprises a measurement electrode element (32) being in direct contact with the electrolyte liquid (34), comprises a gas-sensitive membrane (38) separating the electrolyte liquid (34) from the chamber liquid (22'), and comprises a venting opening (37) at the electrolyte chamber housing (31). A calibration liquid container (42) with a calibration liquid (43) is provided. The electronic controller (60) comprises a measurement signal evaluation module (64) being connected to the reference electrode element (28) and to the gas-selective electrode unit (30) for generating a measurement value (U). The electronic controller (60) comprises a calibration module (66) generating a calibration liquid measurement value (U43) when the sample chamber (22) is filled with the calibration liquid (43). An electrolyte exhaustion determination module (62) comprises an exhaustion-graph-memory (68) memorizing a calibration/exhaustion graph (100). The electrolyte exhaustion determination module (62) is in signal- connection with the calibration module (66) and determines the actual volume (V34) of the electrolyte liquid (34) at the basis of the calibration measurement value (U43) and the calibration/exhaustion graph (100).
The invention refers to a chemical liquid container (10) with a container body (20) having a top opening (22), with a container closure arrangement (30) covering the top opening (22) of the container body (20), and with a suction hose (60) extending through the container closure arrangement (30), so that a suction opening (64) of the suction hose (60) is within the container body (20), wherein the container closure arrangement (30) is provided with a separate closure cap (40) being detachably fixed to an opening neck (24) of the container body top opening (22) and being provided with a wiping ring (42) defining a wiping ring opening (44), wherein the suction hose (60) extends through the wiping ring opening (44) and is in circumferential contact with and is axially slidable with respect to the wiping ring (42), wherein a separate handling element (50) is permanently fixed to a container-external fixation portion (62) of the suction hose (60), and wherein the handling element (50) is provided with a lateral gripping surface (52). Before the closure cap (40) is detached from the container body (20), the suction hose (60) can be pulled so that only a short portion of the suction hose (60) remains wet.
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
11.
CUVETTE FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, METHOD FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, SYSTEM FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE AND METHOD FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE
An aspect of the present invention relates to a cuvette for a photometric measurement of a sample, the cuvette comprising: a sample container; and at least one photometer. Further aspects of the present invention relate to a method for a photometric measurement of a sample, a system for a photometric analysis of a sample and a method for a photometric analysis of a sample.
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
The invention relates to an analysis preparation cuvette rack unit (10;10′) comprising a cuvette platform (20) for uprightly holding a sample cuvette (100;101) comprising a cuvette identification (111;111′) on a sample cuvette information carrier (110;110′). The cuvette rack unit (10; 10′) comprises a platform balance for determining the weight of the sample cuvette (100; 101) held by the cuvette platform (20), a reading device (16) for reading the unique cuvette identification (111; 111′) of the sample cuvette information carrier (110; 110′), a sample cuvette information carrier (110; 110′) and a sample cuvette information carrier (110; 110′). cuvette information carrier (110) of the sample cuvette (100;101) held by the cuvette platform (20), and an analysis preparation controller (14;14′) informationally connected to the platform scale (12) and the reading means (16) for storing and transmitting a sample cuvette weight value together with the associated read cuvette identification (111;111′) to a separate remote analysis unit (60) which performs a quantitative analyte analyser (66). The cuvette rack unit (10;10′) does not comprise an analyte analyser.
An aspect of the invention relates to a method for verifying the plausibility of sensor information sensed by a sensor device associated with a plant process, in particular a water treatment process and/or a wastewater treatment process, wherein the sensor information relates to the plant process, the method comprising: receiving (S100), by a control unit, the sensor information; performing (S110), by the control unit, a verification model, the verification model determining an expected sensor information which the sensor device shall provide, wherein the verification model determines the expected sensor information based on at least one other information related to the plant process and having a relationship to the sensor information; comparing the expected sensor information with the received sensor information; and upon determining (S120) that the sensor information deviates from the expected sensor information, outputting (S130), by the control unit, a verification signal.
The invention refers to an electrochemical process measurement arrangement (10) with a process sensor unit (30), the sensor unit (30) comprising: a reference electrolyte tank (50) with a reference electrolyte and a reference electrode (54), and a measurement electrolyte tank (60) with a measurement electrolyte liquid (62), a measurement electrode (64), a gas-selective membrane (90) separating the reference electrolyte (52) from a sample (13') and a pressure balance channel (84) fluidically connecting the tank interior (56) with the atmosphere (11 ). The pressure balance channel (84) is defined by a balance channel body (80) made of a hydrophobic material having a contact angle Theta higher than 90°. This allows to realize a very narrow pressure balance channel without the danger of being clogged by electrolyte droplets, so that the evaporation loss of the measurement electrolyte is significantly reduced.
The invention is directed to a process analyzing arrangement (10) for continuously determining a water parameter of water (14) of a stationary water site (12), with an automatic analyzer unit (100) and a water sample feed pump (30) for pumping a water sample flow from the stationary water site (12) to the automatic analyzer unit (100), The automatic analyzer unit (100) comprises: a physical analyzer (66) with an analyzing chamber (60) where the water parameter is physically determined, a separate grab sample container (110) of at least 20 ml for collecting a grab sample volume, and a fluidic control arrangement (200) for selectively directing from the water sample flow an analyzer sample to the analyzing chamber (60) and/or a grab sample to the grab sample container (110), wherein the fluidic control arrangement (200) comprises an electronic control unit (90) with a grab sampling control (92) and a grab sampling criterion means (94,95,96) for initiating a grab sample action controlled by the grab sampling control (92). Since the automatic analyzer unit can provide a grab sample, no manual grab sampling is necessary anymore.
The invention is directed to a multi-wavelength process photometer (20) for quasi-continuously determining the absorption of a liquid sample, comprising a continuous-spectrum flashlight source (24), a transparent liquid sample measurement cell (40) which is radiated by the flashlight source (24), a translucent light diffusor element (50) behind the measurement cell (40) for homogenously diffusing the light of the flashlight source (24) coming from the liquid sample measurement cell (40), and at least two different wavelength-selective light detectors (61, 62, 63) behind the light diffusor element (50), wherein the light detectors (61, 62, 63) have substantially the same distance (X4) to the light diffusor element (50).
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
The invention is directed to a process water analyzer (10) for automatically analyzing a parameter of a water sample, comprising a process liquid reservoir tank (70,72) with a process liquid (70',72'), whereas the process liquid reservoir volume (V70,V72) in the reservoir tank (70,72) defines a reservoir liquid level (l70,l72) at a reservoir liquid level height (h70, h72), a dosage chamber (30) fluidically connected to the process liquid reservoir tank (70,72) and being positioned fluidically downstream of the process 10 liquid reservoir tank (70,72), and a positive displacement dosage pump (20) fluidically connected to the top of the dosage chamber (30) for sucking in the process liquid (70', 72') into the dosage chamber (30), whereas an air cushion (27) is always provided vertically between the dosage pump (20) and a dosage chamber liquid level (l) in the dosage chamber (30), so that a liquid column (lc70, lc72) with an effective vertical liquid column length (c70,c72) is given between the reservoir liquid level (l70,l72) and the dosage chamber liquid level (l), whereas the dosage pump (20) directly sucks a pressure-adapted gas volume (Vgas) of the air cushion (27) having an air cushion pressure (P) so that a set process liquid volume (Vliquid) is pumped into the dosage chamber (30), and whereas a process liquid dosage control unit (200) is provided, the process liquid dosage control unit (200) providing the value of the pressure-adapted pumped gas volume (Vgas) dependent on the air cushion pressure (P) effected by the effective vertical liquid column length (c70,c72).
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
G01F 22/02 - Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
The invention is directed to a process water analyzer (10) for automatically analyzing a parameter of a water sample, comprising a process liquid reservoir tank (70,72) with a process liquid (70',72'), whereas the process liquid reservoir volume (V70,V72) in the reservoir tank (70,72) defines a reservoir liquid level (l70,l72) at a reservoir liquid level height (h70, h72), a dosage chamber (30) fluidically connected to the process liquid reservoir tank (70,72) and being positioned fluidically downstream of the process liquid reservoir tank (70,72), a positive displacement dosage pump (20) fluidically connected to the top of the dosage chamber (30) for sucking the process liquid (70', 72') into the dosage chamber (30), whereas an air cushion (27) is always provided vertically between the dosage pump (20) and a liquid column upper level (l) of a process liquid column (lc70,lc72) with an effective vertical liquid column length (c70,c72) between the reservoir liquid level (l70,l72) and the liquid column upper level (l), a gas pressure sensor (60) sensing the gas pressure (P) of the air cushion (27), and a liquid reservoir volume control unit (100) calculating the actual process liquid reservoir volume (V70,V72) on the basis of the gas pressure (P) provided by the gas pressure sensor (60) and the known vertical height (h) of the liquid column upper level (l). This arrangement makes a liquid level sensor for the process liquid reservoir tank(s) redundant.
G01F 11/02 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
G01F 22/02 - Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Disclosed is a process photometer arrangement (10) with a photometric cuvette unit (20) comprising a cuvette body (24) defining a cuvette cavity (25) and a combined sample inlet/outlet opening (34), a photometer light inlet window (60) and a photometer light outlet window (62). The cuvette body (24) is movably supported by a cuvette body support element (88) and the cuvette unit (20) is provided with a cuvette vibration device (80) for vibrating the cuvette body (24) to thereby quickly and homogenously mix a liquid sample volume (31) within the cuvette cavity (25) without any separate mixing element within the cuvette cavity. This allows a short mixing action within a microfluidic cuvette.
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
B01F 31/20 - Mixing the contents of independent containers, e.g. test tubes
B01F 31/24 - Mixing the contents of independent containers, e.g. test tubes the containers being submitted to a rectilinear movement
21.
METHOD OF DETERMINING PHOSPHATE CONCENTRATION IN A WATER SAMPLE
A method for determining a phosphate concentration in a water sample. The method includes providing the water sample, determining a first phosphate concentration of the water sample via a molybdenum yellow method or via a variant of the molybdenum yellow method at a first temperature, and, if the first phosphate concentration is falls within a specified range, determining a corrected phosphate concentration of the water sample via the molybdenum yellow method or via the variant of the molybdenum yellow method at a second temperature.
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
A photometric process measurement arrangement and a photometric measurement method The invention refers to a photometric process measurement arrangement (10) comprising a photometric immersion probe (20) comprising a photometer flashlight source (61) for providing photometric light impulses, a photometric detector arrangement (70) comprising a separate wavelength-selective detection element (71, 72, 73), and a photometer control (80) controlling the photometer flashlight source (61) and the detector arrangement (70), The photometer control (80) comprises: An impulse signal integrator (819, 829, 839) for integrating the electric impulses having the impulse intensity (Ui) generated by the detection element (71, 72, 73) of one impulse integration cycle (204; 221; 264), a measurement cycle control (90) for adapting the total number of 20 integrated cycle impulses of an impulse integration cycle (204;221;264) to the impulse intensity (Ui) of the single electric impulses, an A/D-converter (81, 82, 83) for converting the voltage of the impulse signal integrator (819, 829, 839) in an optional compulsory A/D conversion interval (100) after the impulse integration cycle (204;221;264), and an A/D-conversion management module (150) for balancing the total number of A/D conversion intervals (100-111) within a time frame (F), whereas the number of supplementary A/D conversion intervals (101-111) after the compulsory A/D conversion interval (100) depends on the length of the corresponding impulse integration cycle (204; 221; 264).
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01N 21/85 - Investigating moving fluids or granular solids
The invention refers to a photometric process measurement arrangement (10) with a photometric immersion probe (20). The photometric immersion probe (20) comprises a photometer flashlight source (61) for providing photometric light impulses, a photometric detector arrangement (70) comprising at least two separate wavelength-selective detection elements (71, 72, 73), and a photometer control (80) controlling the photometer flashlight source (61) and the detector arrangement (70). The photometer control (80) comprises several impulse signal integrators (819, 829, 839) for integrating the electric impulses generated by the detection elements (71, 72, 73), several A/D-converters (81, 82, 83) for converting the voltages of the impulse signal integrators (819, 829, 839) when high-precision- converting trigger ports (H) of the A/D-converters (81, 82, 83) are triggered, and a measuring cycle control (90) with an integration target memory (94) memorizing an integration target voltage value (Ut). The photometer control (80) is provided with a high-precision-request port (93) for synchronously triggering the high-precision-converting trigger ports (H) of all A/D-converters (81, 82, 83) after the voltage of the first of all impulse signal integrators (819, 829, 839) has exceeded the memorized integration target voltage value (Ut).
G01J 1/18 - Photometry, e.g. photographic exposure meter by comparison with reference light or electric value using electric radiation detectors using comparison with a reference electric value
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01N 21/85 - Investigating moving fluids or granular solids
A photometric process measurement arrangement (10) comprising a photometric immersion probe (20), the photometric immersion probe (20) comprising a photometer flashlight source (61) for providing photometric light impulses, a photometric detector arrangement (70) comprising at least two separate wavelength-selective detection elements (71, 72, 73), and a photometer control (80) controlling the photometer flashlight source (61) and the detector arrangement (70), the photometer control (80) comprising: impulse signal integrators (819, 829, 839) for integrating the electric impulses having the impulse intensity (Ui) generated by the detection elements (71, 72, 73) of one impulse integration cycle (204; 221; 264), a measurement cycle control (90) for adapting the total number of integrated cycle impulses of an impulse integration cycle (204;221;264) to the impulse intensity (Ui) of the single electric impulses, A/D-converters (81, 82, 83) for converting the voltages of the impulse signal integrators (819, 829, 839) in an A/D conversion interval (100) after the impulse integration cycle (204;221;264), a flashlight driving module (120) for controlling an impulse ignition switch (36) triggering the photometer flashlight source (61) with an impulse frequency (fi) during the impulse integration cycle (204; 221; 264), and a flashlight thermal management module (130) for balancing the number of photometric light impulses within a time frame (F), for example, by adding an adapted pause interval (303;311) between the impulse integration cycles (204; 221; 264) depending on the number of integrated cycle impulses, so that the total number of photometric light impulses within the time frame (F) is substantially constant.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01N 21/85 - Investigating moving fluids or granular solids
A method for the determination of a plausibility of a measurement result of a determination of an ammonium content of an aqueous sample. The method includes providing a blue indole dye mixture of the aqueous sample, determining a first extinction value of the blue indole dye mixture in a first absorption region, determining a second extinction value of the blue indole dye mixture in a second absorption region, dividing the first extinction value by the second extinction value so as to obtain a quotient, and determining the measurement result to not be plausible if the quotient ≥ 1.1.
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
A flow velocity measurement arrangement (10) for determining the flow velocity of an electrically conductive liquid in a liquid line, comprising an air bubble injector (82) for injecting an air bubble into a liquid flow, a first electrical conductivity measurement cell (30) downstream of the air bubble injector (82) and upstream of a measurement line (40), a second electrical conductivity measurement cell (30′) downstream of the measurement line (40), an evaluation unit (20) which determines the flow velocity of the liquid in the measurement line (40) on the basis of the time-related characteristics of the conductivity measurement results of the two measurement cells (30, 30′).
G01F 1/708 - Measuring the time taken to traverse a fixed distance
G01F 1/64 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical currents passing through the fluid flowMeasuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact, or friction effects
G01N 27/10 - Investigation or analysis specially adapted for controlling or monitoring operations or for signalling
The invention refers to a photometric process measurement arrangement (10) with a photometric immersion probe (20). The photometric immersion probe (20) comprises a photometer flashlight source (61) for providing photometric light impulses with a continuous spectrum, an impulse energy capacitor (33) for storing the electric impulse energy and having an actual electric capacitors voltage (U), an impulse ignition switch (36) electrically arranged between the impulse energy capacitor (33) and the photometer flashlight source (61), an ignition voltage memory (45) memorizing an ignition voltage value (Ui), and a falling-edge ignition trigger (42) which closes the impulse ignition switch (36) in the moment when the falling actual electric capacitors voltage (U) equals the memorized ignition voltage value (Ui).
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
G01N 21/85 - Investigating moving fluids or granular solids
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H05B 41/30 - Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
G01J 3/10 - Arrangements of light sources specially adapted for spectrometry or colorimetry
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
An embodiment provides a method for modifying a carbon region on a boron-doped diamond electrode surface, comprising: placing a boron-doped diamond electrode surface in an aqueous solution, wherein the aqueous solution comprises an ionic treatment solution; applying a voltage difference across the boron-doped diamond electrode surface; and modifying a carbon region on an area of the boron-doped diamond electrode surface, wherein the modifying is responsive to application of the voltage while the boron-doped diamond electrode surface is in the aqueous solution, wherein the modification continues until a desired signal of the carbon region is reached. Other aspects are described and claimed.
The invention refers to a photometric process measurement arrangement (10) with a photometric immersion probe (20) being electrically supplied with a probe supply voltage (Us) and comprising: a photometer flashlight source (61), an impulse energy capacitor (33), aann electronic flyback-converter (30) for successively electrically charging the impulse energy capacitor (33) with numerous charging voltage quantums (Uq), whereas the flyback-converter (30) is provided with a converter switch (31) between a converter supply voltage port (80) and a transformer (32), and a switching signal generator (49) for driving the converter switch (31) with a switching signal and comprising a standard duty cycle signal generator (44) for driving the converter switch (31) with a standard duty cycle value (D1) and comprising a boost duty cycle signal generator (45) for alternatively driving the converter switch (31) with a higher boost duty cycle value (D2), when the boost duty cycle signal generator (45) is activated. The switching signal generator (49) is provided with a supply voltage comparator (46) continuously comparing the probe supply voltage (Us) at the converter supply voltage port (80) and the memorized boost voltage value (Ub). The switching signal generator (49) activates the boost duty cycle signal generator (44) if the supply voltage comparator (46) determines that the supply voltage (Us) is below the boost voltage value (Ub).
G01N 21/85 - Investigating moving fluids or granular solids
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H05B 41/30 - Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
G01J 3/10 - Arrangements of light sources specially adapted for spectrometry or colorimetry
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
The invention refers to a sample preparation arrangement (30) for preparing a water sample for a process water sample analyzer (70), the sample preparation arrangement (30) comprising an immersion filter probe (20) arranged in a water basin (12), the immersion filter probe (20) comprising a sample filter membrane (24), a peristaltic hose sample pump (40) for pumping a water sample from the immersion filter probe (20) to the process water sample analyzer (70), the sample pump (40) comprising a peristaltic pump hose (42) and a pump motor (46) driving a peristaltic pump rotor (44), a water flow sensor arrangement (50) being fluidically arranged in-line with the sample pump (40) and the water sample analyzer (70), a hydrostatic pressure memory (64) for memorizing a static hydraulic pressure (SP) caused by the vertical pump height (H) between the sample pump (40) and the water level surface (14') in the water basin (12), and a pressure sensor (80) fluidically arranged between the immersion filter probe (20) and the sample pump (40).
The invention refers to a method for determining a cuvette form correction value (F) for a laboratory analysis cuvette (10) filled with a liquid reagent (60) and having a transparent cuvette body (12) comprising a vertical wall (14) and a bottom wall (13), comprising the method steps: Determining the liquid reagent volume (V) of the liquid reagent (60) filled into the laboratory analysis cuvette (10), optically determining the liquid reagent level (H) of the liquid reagent (60) in the laboratory analysis cuvette (10) by a level determination camera (24), calculating a horizontal inner width (D) of the laboratory analysis cuvette (10) from the determined liquid reagent volume (V) and the determined liquid reagent level (H) by an electronic control (26), and calculation of the form correction value (F) from the calculated horizontal inner width (D) and a reference inner width (D') of the laboratory analysis cuvette (10) by the electronic control (26).
The invention is directed to a method for determining a sample filter clogging condition value (C) of an immersion filter probe (20) of a process water analyzer arrangement (10), with the method steps provided by a filter clogging condition determination module (60): driving the sample pump (40) for pumping a defined filtration volume (FV) flowing through the filter membrane (24) and detected by the water flow sensor unit (50), memorizing the filtration motor rotations value (FR) generated by the motor speed control (61) for pumping the defined filtration volume (FV), driving the sample pump (40) for pumping a defined non-filtration volume (NV) detected by the water flow sensor unit (50), wherein the non-filtration volume (NV) is smaller than the membrane distal bulging volume (MV), memorizing the motor rotations value (NR) generated by the motor speed control (61) for pumping the defined non-filtration volume (DV), and determining the sample filter clogging condition value (C) with the filtration motor rotations value (FR) and the non-filtration motor rotations value (NR).
G01F 11/12 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
A laboratory analyser unit (10) for determining an analyte of a liquid sample (48) mixed with a reagent and contained in a sample cuvette (40) which comprises a thermal radiation measuring field (46) on the outside, comprising an analyser (12) for determining an analyte concentration of the liquid sample (48) in the sample cuvette (40), a pyrometer (50) for determining the surface temperature of the measuring field (46) wherein the pyrometer (50) is arranged in such a way that a detection cone (52) of the pyrometer (50) is aligned with the measurement field (46) of the sample cuvette (40) inserted into the analyser unit (10), and an analyser control unit (20), which is signal-connected to the analyser (12) and which comprises a temperature evaluation module (22) which is signal-connected to the pyrometer (50) and which evaluates the sample cuvette temperature (T) determined by the pyrometer (50). The invention allows a simple temperature detection of the sample temperature.
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
The invention relates to a laboratory analyser unit (10) for determining an analyte of a reagent-mixed liquid sample (48) contained in a transparent sample cuvette (40) comprising an information carrier (44) with an optical cuvette label (46), comprising an analyser (12) for determining an analyte concentration of the liquid sample (48) in the sample cuvette (40), a reading device (30) for reading the cuvette identification (46), an instrument controller (20) which, from the cuvette identification (46) read out by the reading device (30), generates a liquid sample level setpoint (SP), wherein the device control (20) comprises a liquid sample level detection (26) signal-connected to a camera (30'), which determines a liquid sample level actual value (IP) of the liquid sample (48) in the transparent sample cuvette (40) from the camera signal, and wherein a level comparison module (28) is provided which compares the determined level setpoint (SP) with the determined level actual value (IP).
The invention relates to an analysis preparation cuvette rack unit (10;10') comprising a cuvette platform (20) for uprightly holding a sample cuvette (100;101) comprising a cuvette identification (111;111') on a sample cuvette information carrier (110;110'). The cuvette rack unit (10; 10') comprises a platform balance for determining the weight of the sample cuvette (100; 101) held by the cuvette platform (20), a reading device (16) for reading the unique cuvette identification (111; 111') of the sample cuvette information carrier (110; 110'), a sample cuvette information carrier (110; 110') and a sample cuvette information carrier (110; 110'). cuvette information carrier (110) of the sample cuvette (100;101) held by the cuvette platform (20), and an analysis preparation controller (14;14') informationally connected to the platform scale (12) and the reading means (16) for storing and transmitting a sample cuvette weight value together with the associated read cuvette identification (111;111') to a separate remote analysis unit (60) which performs a quantitative analyte analyser (66). The cuvette rack unit (10;10') does not comprise an analyte analyser.
G01F 22/00 - Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
G01F 23/20 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of weight, e.g. to determine the level of stored liquefied gas
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
36.
CUVETTE FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, METHOD FOR A PHOTOMETRIC MEASUREMENT OF A SAMPLE, SYSTEM FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE AND METHOD FOR A PHOTOMETRIC ANALYSIS OF A SAMPLE
An aspect of the present invention relates to a cuvette for a photometric measurement of a sample, the cuvette comprising: a sample container; and at least one photometer. Further aspects of the present invention relate to a method for a photometric measurement of a sample, a system for a photometric analysis of a sample and a method for a photometric analysis of a sample.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Recorded computer software for controlling and optimization of processes for treating wastewater and drinking water Installation, maintenance, and updating of computer software for control and optimization of processes for treating wastewater and drinking water; providing temporary use of online non-downloadable computer software for controlling and optimization of processes for treating wastewater and drinking water
The present invention relates to a water sampling immersion probe (50) for continuously filtering a water sample from wastewater (14). The water sampling immersion probe (50) includes a distal coarse filter (60) with a porosity of 0.1 to 1.0 mm, a proximal fine filter (70) arranged downstream of the coarse filter (60) and having a porosity of less than 5.0 μm, and a sample suction opening (74) arranged downstream of the fine filter (70). The coarse filter (60) is arranged to not contact the fine filter (70).
B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
An aspect of the invention relates to a method for verifying the plausibility of sensor information sensed by a sensor device associated with a plant process, in particular a water treatment process and/or a wastewater treatment process, wherein the sensor information relates to the plant process, the method comprising: receiving (S100), by a control unit, the sensor information; performing (S110), by the control unit, a verification model, the verification model determining an expected sensor information which the sensor device shall provide, wherein the verification model determines the expected sensor information based on at least one other information related to the plant process and having a relationship to the sensor information; comparing the expected sensor information with the received sensor information; and upon determining (S120) that the sensor information deviates from the expected sensor information, outputting (S130), by the control unit, a verification signal.
The invention is directed to a multi-wavelength process photometer (20) for quasi-continuously determining the absorption of a liquid sample, comprising a continuous-spectrum flashlight source (24), a transparent liquid sample measurement cell (40) which is radiated by the flashlight source (24), a translucent light diffusor element (50) behind the measurement cell (40) for homogenously diffusing the light of the flashlight source (24) coming from the liquid sample measurement cell (40), and at least two different wavelength-selective light detectors (61, 62, 63) behind the light diffusor element (50), wherein the light detectors (61, 62, 63) have substantially the same distance (X4) to the light diffusor element (50).
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
Disclosed is a process photometer arrangement (10) with a photometric cuvette unit (20) comprising a cuvette body (24) defining a cuvette cavity (25) and a combined sample inlet/outlet opening (34), a photometer light inlet window (60) and a photometer light outlet window (62). The cuvette body (24) is movably supported by a cuvette body support element (88) and the cuvette unit (20) is provided with a cuvette vibration device (80) for vibrating the cuvette body (24) to thereby quickly and homogenously mix a liquid sample volume (31) within the cuvette cavity (25) without any separate mixing element within the cuvette cavity. This allows a short mixing action within a microfluidic cuvette.
A process water analysis sampling assembly includes an immersion probe having a first filter unit and a second filter unit which are fluidically separated from each other, a flushing liquid tank, and a fluidics control. The fluidics control includes a pump arrangement which is fluidically connected to each of the first filter unit and the second filter unit, at least two liquid pumps which are arranged to be mutually independent from each other, and a valve arrangement having plurality of switchable valves. The fluidics control controls a sampling and a flushing of the immersion probe. The fluidic control fluidically connects the flushing liquid tank to one of the first filter unit and the second filter unit and simultaneously connects an analysis unit to the other one of the first filter unit and the second filter unit.
G01N 1/14 - Suction devices, e.g. pumpsEjector devices
B01D 29/11 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
A method for the determination of a plausibility of a measurement result of a determination of an ammonium content of an aqueous sample. The method includes providing a blue indole dye mixture of the aqueous sample, determining a first extinction value of the blue indole dye mixture in a first absorption region, determining a second extinction value of the blue indole dye mixture in a second absorption region, dividing the first extinction value by the second extinction value so as to obtain a quotient, and determining the measurement result to not be plausible if the quotient ≥ 1.1.
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
A flow velocity measurement arrangement (10) for determining the flow velocity of an electrically conductive liquid in a liquid line, comprising an air bubble injector (82) for injecting an air bubble into a liquid flow, a first electrical conductivity measurement cell (30) downstream of the air bubble injector (82) and upstream of a measurement line (40), a second electrical conductivity measurement cell (30') downstream of the measurement line (40), an evaluation unit (20) which determines the flow velocity of the liquid in the measurement line (40) on the basis of the time-related characteristics of the conductivity measurement results of the two measurement cells (30, 30').
G01F 1/708 - Measuring the time taken to traverse a fixed distance
G01N 27/08 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid which is flowing continuously
G01F 1/712 - Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
G01F 1/74 - Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
An aspect relates to a plant control system (10) for controlling at least one plant process running in at least one plant, the system comprising first and second controller devices (12, 14) communicatively coupled with each other, wherein the first controller device (12) is configured to interface with at least one connectable process information device (20), the connectable process information device (20) providing to the first controller device (12) process information associated with the plant process running in the plant, and wherein the second controller (14) device is configured to: (a) obtain from the first controller device (12) the process information provided by the connectable process information device (20) to the first controller device (12), (b) interface with the plant control system (10), and (c) process the obtained process information and to provide to the plant control system (10) processed information associated with the at least one plant process.
An embodiment provides a device for measuring pH in an aqueous sample, including: a primary electrode comprising a boron doped diamond-based electrode and a primary carbon region comprising a pH sensitive sp2 carbon region, wherein the primary carbon region comprises a portion of the surface area of a face of the primary electrode; a secondary electrode comprising a boron doped diamond-based electrode and a secondary carbon region, wherein the secondary carbon region comprises a portion of the surface area of a face of the secondary electrode, the portion of the surface area of a face of the secondary electrode being less than the portion of the surface area of a face of the primary electrode; at least one reference electrode; at least one auxiliary electrode; and a memory storing instructions executable by a processor to identify a pH of an aqueous sample by measuring an electrical potential between the at least one reference electrode and at least one of: the primary electrode and the secondary electrode. Other aspects are described and claimed.
Method for modifying a carbon region on a boron-doped diamond electrode surface, comprising: placing a boron-doped diamond electrode surface in an aqueous solution, wherein the aqueous solution comprises an ionic treatment solution; applying a voltage difference across the boron-doped diamond electrode surface; and modifying a carbon region on an area of the boron-doped diamond electrode surface, wherein the modifying is responsive to application of the voltage while the boron-doped diamond electrode surface is in the aqueous solution, wherein the modification continues until a desired signal of the carbon region is reached. The sensor is used as a pH sensor after the treatment.
An embodiment provides a method for modifying a carbon region on a boron-doped diamond electrode surface, comprising: placing a boron-doped diamond electrode surface in an aqueous solution, wherein the aqueous solution comprises an ionic treatment solution; applying a voltage difference across the boron-doped diamond electrode surface; and modifying a carbon region on an area of the boron-doped diamond electrode surface, wherein the modifying is responsive to application of the voltage while the boron-doped diamond electrode surface is in the aqueous solution, wherein the modification continues until a desired signal of the carbon region is reached. Other aspects are described and claimed.
The invention refers to an optical measurement apparatus (10) with an optical device (18,20,22) and a liquid sample vessel (12) for measuring an optical parameter of a liquid sample (13) in the liquid sample vessel (12), comprising a drying circuit circulating drying air for venting the sample vessel (12), wherein the drying circuit comprises a mechanical water stop means (100) in the course of the drying circuit, the water stop means (100) comprising a conduit body (102) with a water-absorbing swelling element (120) arranged within the conduit body (102). The water stop means is simple and inexpensive and reliably protects all elements downstream of the water stop means from a water ingress upstream of the water stop means.
The present invention provides a method of determining chemical oxygen demand (COD) for a sample with a high concentration of chloride. The method includes obtaining the sample, determining a concentration of chloride in the sample to obtain a known concentration of chloride in the sample, dosing an amount of the sample, an acid and an oxidizing agent into a container to obtain an analyte, heating the container containing the analyte, photometrically determining a preliminary chemical oxygen demand (COD) of the analyte in an analytic device, and correcting for the high concentration of chloride using a chloride correction to obtain the chemical oxygen demand (COD).
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
51.
SERIAL COMMAND PROTOCOL ENCAPSULATING WIRE TRANSFER PROTOCOL
An embodiment provides a method for transferring information utilizing a serial communication command structure over an unreliable or a non-continuous communication channel, including: establishing a serial command structure, wherein the establishing comprises defining a package structure having a predefined format, wherein the serial command structure comprises bounded data; and transmitting, over the unreliable or the non-continuous communication channel, data from a sending entity to a receiving entity utilizing the serial command structure and in the predefined format. Other aspects are described and claimed.
An embodiment provides a method for matching an antenna to a network, including: identifying a communication network having a predetermined frequency accessible to connect a multi-band antenna of a device that radiates at a plurality of frequencies, wherein the plurality of frequencies includes the predetermined frequency; selecting one of a plurality of matching networks associated with the multi-band antenna based upon the predetermined frequency of the communication network, wherein each of the plurality of matching networks is associated with at least one of the plurality of frequencies; and connecting the multi-band antenna to the identified communication ne twork while employing the selected one of a plurality of matching networks. Other aspects are described and claimed.
The invention refers to a photometer arrangement (8) with a reagent container (10,10′) comprising a reagent (14) and being provided with a machine-readable reagent identifier (16), an analyzer device (30) comprising a photometer (40) for providing a photometric raw measurement value (M), a reagent identifier reader (45) for providing a reagent identity (R) and a photometer controller (36), a time stamp generator (38) for providing a measurement date (MD), a reagent ageing database (76) with reagent-identity-specific and age-specific ageing correction factors (C), and an evaluation device (50) having a data connection with the analyzer device (30) and the reagent ageing database (76). The long time accuracy of the photometric results is improved significantly.
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
G01N 21/82 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
01 - Chemical and biological materials for industrial, scientific and agricultural use
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemicals used in industry and science, in particular reagents for conducting and controlling chemical analyses and tests of waste water and drinking water, and reagents for conducting and controlling medical-chemical analyses and tests. Apparatus and instruments for industrial and scientific purposes, namely analysers, measuring, controlling and regulating apparatus and instruments; measuring and recording apparatus for diagnostic purposes and for waste water and drinking water analysis; electric measuring and testing apparatus, in particular photometers, spectral photometers, colour-measuring apparatus, brightness and reflection measuring apparatus, transparency and turbidity measuring apparatus; waste water and drinking water analysers; software for the aforesaid apparatus and instruments. Scientific research, in particular with regard to chemical products, and apparatus and instruments for industrial and scientific purposes; creating evaluation software, apparatus and instruments for industrial and scientific purposes.
The present invention relates to a water sampling immersion probe (50) for continuously filtering a water sample from wastewater (14). The water sampling immersion probe (50) includes a distal coarse filter (60) with a porosity of 0.1 to 1.0 mm, a proximal fine filter (70) arranged downstream of the coarse filter (60) and having a porosity of less than 5.0 µm, and a sample suction opening (74) arranged downstream of the fine filter (70). The coarse filter (60) is arranged to not contact the fine filter (70).
B01D 29/56 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
B01D 29/03 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements self-supporting
B01D 29/05 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements supported
B01D 29/66 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
A method for determining a phosphate concentration in a water sample includes providing the water sample, adding a first acid to the water sample to obtain a second water sample in which a concentration of the first acid is at least 0.5 wt.-%, performing a first photometric measurement of the second water sample, adding a coloring component to the second water sample to obtain a third water sample, performing a second photometric measurement of the third water sample, and calculating the phosphate concentration from a difference between the first photometric measurement and the second photometric measurement.
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
An embodiment provides a method for matching an antenna to a network, including: identifying a communication network having a predetermined frequency accessible to connect a multi-band antenna of a device that radiates at a plurality of frequencies, wherein the plurality of frequencies includes the predetermined frequency; selecting one of a plurality of matching networks associated with the multi-band antenna based upon the predetermined frequency of the communication network, wherein each of the plurality of matching networks is associated with at least one of the plurality of frequencies; and connecting the multi-band antenna to the identified communication network while employing the selected one of a plurality of matching networks. Other aspects are described and claimed.
A turbidimeter device, including: a fluidically closed turbidimeter vessel comprising a liquid sample inlet and a liquid sample outlet; a vacuum pump for generating underpressure in the turbidimeter vessel to degas the liquid sample; and an optical measurement device for an optical determination of the liquid sample turbidity. Other aspects are described and claimed.
The present invention provides a method of determining chemical oxygen demand (COD) for a sample with a high concentration of chloride. The method includes obtaining the sample, determining a concentration of chloride in the sample to obtain a known concentration of chloride in the sample, dosing an amount of the sample, an acid and an oxidizing agent into a container to obtain an analyte, heating the container containing the analyte, photometrically determining a preliminary chemical oxygen demand (COD) of the analyte in an analytic device, and correcting for the high concentration of chloride using a chloride correction to obtain the chemical oxygen demand (COD).
An optical measurement device with a transparent cylindrical measurement cuvette, which defines an axial symmetrical axis and contains the fluid sample, an optical measurement arrangement which quantitatively determines the optical property of the fluid sample in the measurement cuvette, and a mechanical cleaning arrangement is described. The cleaning arrangement comprises an external magnetic working platform, which is arranged coaxially to the symmetrical axis, is slidable in a translatory manner parallel to the symmetrical axis, is rotatable about the symmetrical axis, encloses the cylindrical measurement cuvette externally in an annular manner, and has at least one translatory magnet element and at least one rotary magnet element, and an internal magnetic cleaning unit, which is arranged within the measurement cuvette and is slidable in a translatory manner, has a cleaning body, has at least one translatory magnet element, and has at least one rotary magnet element. The translatory magnet elements as well as the rotary magnet elements of the working platform and the cleaning unit are coupled to one another in a contactless and magnetic manner, respectively. Other aspects are described and claimed.
A water analysis device having a light source and a light detector for detecting an optical parameter of a water sample in a transparent measuring cell is disclosed. A ventilation circuit for ventilating a cell chamber is provided, wherein there is a differential pressure of at least 2.0 mbar between the cell chamber and the atmosphere when a ventilation pump is operated. The device housing forms the cell chamber which is fluidically sealed by a cover assembly. The cover assembly and the device housing have a mechanism that mimics the sealing action of a turn-lock fastener, such that the cover assembly can be secured to and/or released from the device housing by means of a rotational movement. The cover assembly and the device housing form an annular ring seal which is coaxial with the rotational movement and which is formed by an elastic sealing body having a circular sealing lip and a correspondingly circular shoulder seat on which the sealing lip is pressed due to the atmospheric differential pressure. Other aspects are disclosed and claimed.
The invention refers to a photometer arrangement (8) with a reagent container (10,10') comprising a reagent (14) and being provided with a machine-readable reagent identifier (16), an analyzer device (30) comprising a photometer (40) for providing a photometric raw measurement value (M), a reagent identifier reader (45) for providing a reagent identity (R) and a photometer controller (36), a time stamp generator (38) for providing a measurement date (MD), a reagent ageing database (76) with reagent-identity-specific and age-specific ageing correction factors (C), and an evaluation device (50) having a data connection with the analyzer device (30) and the reagent ageing database (76). The long time accuracy of the photometric results is improved significantly.
The invention refers to a microfluidic process water analyzer (10) comprising an analyzer sample inlet (52), an optical sensor unit (40) for determination of an optical parameter of a liquid sample, a reagent tank (20; 201, 202, 203) being arranged fluidically upstream of the optical sensor unit (40) and comprising a liquid reagent (21), a waste tank (30; 301, 302, 303) arranged fluidically downstream of the optical sensor unit (40), an evaporation arrangement (32) comprising an evaporation chamber (33) arranged fluidically downstream of the optical sensor unit (40), the evaporation chamber (33) being actively vented with a drying gas pumped from a gas source (60) to the evaporation chamber (33). The evaporation arrangement allows to significantly reduce the volume of waste liquid.
B01D 3/34 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
G01N 21/85 - Investigating moving fluids or granular solids
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
B01D 1/14 - Evaporating with heated gases or vapours in contact with the liquid
C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
The invention relates to a method for determining phosphate in a water sample, comprising the steps: b) provision of a water sample, c) addition of an acid in such a way that the concentration of acid in the water sample amounts to at least 0.5 wt%, d) first photometric measurement of the water sample solution, e) addition of a colouring component to the photometric water sample solution, f) second photometric measurement, and g) calculation of the phosphate concentration from the difference between the first and the second photometric measurements.
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
66.
Nephelometric turbidimeter and method for controlling the humidity of venting air in a nephelometric turbidimeter
A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a transparent sample cuvette. The nephelometric turbidimeter includes a cuvette chamber housing with a cuvette chamber having the transparent sample cuvette arranged therein, and a drying apparatus. The drying apparatus includes a cuvette chamber inlet opening which vents the cuvette chamber, a cuvette chamber outlet opening which de-vents the cuvette chamber, an air circulator which circulates air from the cuvette chamber outlet opening to the cuvette chamber inlet opening, and a drying body. The drying body is provided as a container of a hygroscopic agent defined by a drying substance which is arranged in a drying path between the cuvette chamber outlet opening and the cuvette chamber inlet opening so that air flows through the drying body.
Method for the preparation of a solid mixture comprising the steps: - preparing a solution comprising - oxalic acid or oxalic acid salts, - one or more inorganic salts, - lyophilizing the solution
The invention refers to a turbidimeter device (40) comprising: a fluidically closed turbidimeter vessel (44) comprising a liquid sample inlet (61) and a liquid sample outlet (62), a vacuum pump (50) for generating underpressure in the turbidimeter vessel (44) to degas the liquid sample (64), and an optical measurement device (46) for an optical determination of the liquid sample turbidity. Before the turbidity of the liquid sample In the turbidimeter vessel is measured, the liquid sample is degassed by the vacuum pump. The optical measurement device continuously measures the liquid sample turbidity, and outputs a final measurement value after the measured liquid sample turbidity Is stable for a fixed minimum time period. The final measurement value of the liquid sample turbidity is substantially free of falsifications caused by aeration of the liquid sample.
The invention relates to an optical measuring device (10) having: a transparent cylindrical measurement cuvette (12) which defines an axial axis of symmetry (53) and which contains the liquid sample; an optical measuring assembly for quantitatively determining the optical property of the liquid sample in the measurement cuvette (12); and a mechanical cleaning assembly (16). The cleaning assembly (16) has: - an external magnetic work platform (30) which is arranged coaxially with respect to the axis of symmetry (53), can be displaced translationally parallel to the axis of symmetry (53) and can be rotated about the axis of symmetry (53), surrounds the outside of the cylindrical measurement cuvette (12) in a ring-like manner, and has at least one translation system magnetic element (32) and at least one rotation system magnetic element (34); and - an internal magnetic cleaning unit (50) which is arranged inside the measurement cuvette (12), can be rotated and translationally displaced, has a cleaning body (55), at least one translation system magnetic element (52) and at least one rotation system magnetic element (54). The translation system magnetic elements (32, 52) and the rotation system magnetic elements (34, 54) of the work platform (30) and of the cleaning unit (50) are each coupled contactlessly and magnetically to each other.
The invention relates to a water analysis device (10) comprising a light source (23) and a light detector (46) for detecting an optical parameter of a water sample (21') in a transparent measuring cell (20). A ventilation circuit for ventilating the cell chamber (26) is provided, wherein there is a differential pressure of at least 2.0 mbar between the cell chamber (26) and the atmosphere when a ventilation pump (50) is operated. The device housing (14) forms the cell chamber (26) which is fluidically sealed by a cover assembly (12). The cover assembly (12) and the device housing (14) have a mechanism (60) that mimics the sealing action of a turn-lock fastener, such that the cover assembly (12) can be secured to and/or released from the device housing (14) by means of a rotational movement. The cover assembly (12) and the device housing (14) form an annular ring seal (70) which is coaxial with the rotational movement and which is formed by an elastic sealing body (70') having a circular sealing lip (78) and a correspondingly circular shoulder seat (72) on which the sealing lip (78) is pressed due to the atmospheric differential pressure.
A method for detecting a contamination of a cuvette of a turbidimeter. The turbidimeter includes a light source which emits a light beam directed to a cuvette, a scattering light detector, and a diffuser with a body and an actuator. The actuator moves the body between a parking position and a test position where the body is between the measurement light source and the cuvette, thereby interferes with the light beam, and generates a diffuse test light entering the cuvette. The method includes activating the actuator to move the body from the parking position into the test position, activating the light source, measuring a test light intensity received by the scattering light detector, comparing the test light intensity measured with a reference light intensity, and generating a contamination signal if a difference between a reference light intensity and the test light intensity measured exceeds a first threshold value.
The invention refers to an optical measurement apparatus (10) with an optical device (18,20,22) and a liquid sample vessel (12) for measuring an optical parameter of a liquid sample (13) in the liquid sample vessel (12), comprising a drying circuit circulating drying air for venting the sample vessel (12), wherein the drying circuit comprises a mechanical water stop means (100) in the course of the drying circuit, the water stop means (100) comprising a conduit body (102) with a water-absorbing swelling element (120) arranged within the conduit body (102). The water stop means is simple and inexpensive and reliably protects all elements downstream of the water stop means from a water ingress upstream of the water stop means.
The invention refers to a microfluidic process water analyzer (10) comprising an analyzer sample inlet (52), an optical sensor unit (40) for determination of an optical parameter of a liquid sample, a reagent tank (20; 201, 202, 203) being arranged fluidically upstream of the optical sensor unit (40) and comprising a liquid reagent (21), a waste tank (30; 301, 302, 303) arranged fluidically downstream of the optical sensor unit (40), an evaporation arrangement (32) comprising an evaporation chamber (33) arranged fluidically downstream of the optical sensor unit (40), the evaporation chamber (33) being actively vented with a drying gas pumped from a gas source (60) to the evaporation chamber (33). The evaporation arrangement allows to significantly reduce the volume of waste liquid.
G01N 21/85 - Investigating moving fluids or granular solids
B01D 3/00 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
B01D 3/34 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
Techniques for controlled aeration (140) of wastewater (190) include determining a first aeration intensity for a first aeration interval and a different second aeration intensity for a second aeration interval (225) based on a current energy price (215), a predicted energy price (221), and a regulatory surveillance period (201) during which a regulated critical parameter is monitored for regulatory compliance. Wastewater is aerated at the first aeration intensity for the first aeration interval; and at the second aeration intensity for the second aeration interval. The first aeration interval is short compared to the regulatory surveillance period, the second aeration interval is short compared to the regulatory surveillance period and does not overlap the first aeration interval, and the first aeration intensity is less than the second aeration intensity.
A nephelometric turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette. The nephelometric turbidimeter includes a measurement light source configured to emit an axial parallel light beam directed to the sample cuvette, a scattering light detector arranged to receive a scattered light from the sample cuvette, and a diffuser comprising a diffuser body and a diffuser actuator. The diffuser actuator is configured to move the diffuser body between a parking position in which the diffuser body does not interfere with the axial parallel light beam and a test position where the diffuser body is arranged between the measurement light source and the sample cuvette so that the diffuser body interferes with the axial parallel light beam and generates a diffuse test light entering the sample cuvette.
A nephelometric process turbidimeter for measuring a turbidity of a liquid sample includes a transparent sample vial which comprises a sample vial lateral inner surface. A vial head comprises a vial head lateral inner surface. The vial head and the sample vial together define a sample volume of a liquid sample having a shape of a cylinder. A sample inlet opening is arranged at the vial head and comprises an inlet opening axis. A sample outlet opening is arranged at the cylindrical vial head lateral inner surface to be axially closer to the sample vial than to the sample outlet opening. The inlet opening axis is inclined with respect to an inlet cross plane with an inclination angle of 10° to 80°, and is angled with respect to a radius line from a middle of the cylinder to the sample inlet opening with a tangency angle of more than 15°.
A nephelometric turbidimeter with a cylindrical turbidimeter vial. The cylindrical turbidimeter vial includes a transparent vial body and a circular optical shielding configured to optically block an inside from an outside of the turbidimeter vial. The vial body comprises a transparent and flat bottom inlet window, and a transparent vial cylinder body. The vial cylinder body comprises a circular outlet window. The optical shielding is arranged axially above the outlet window of the vial cylinder body, over a part of an axial length of the vial cylinder body, and axially adjacent to a non-shielded part of the vial cylinder body which serves as the outlet window.
A nephelometric turbidimeter vial arrangement includes a vial and a separate vial cap. The vial comprises a transparent cylindrical vial body configured to enclose a vial interior, a bottom inlet window, and a top vial opening configured to be circular. The separate vial cap comprises a light trap cavity. The separate vial cap is configured to close the top vial opening. The light trap cavity comprises an inner surface which comprises a light absorbing surface. The light trap cavity is configured to be open to the vial interior.
The invention is directed to a nephelometric process turbidimeter (10) for measuring a turbidity of a liquid sample (19). The turbidimeter (10) comprises: a transparent sample vial (20) and a separate vial head (30), both defining a sample volume (18) for the liquid sample (19), wherein the lateral inner surface (22, 32) of the sample volume (18) is cylindrical, a sample inlet opening (40) through which the liquid sample flows into the sample volume (18) and a sample outlet opening (50) through which the liquid sample flows out of the sample volume (18), both openings (40, 50) being provided at the vial head (30), and the sample inlet opening (40) being arranged at the cylindrical surface (32) of the vial head (30) and being arranged axially closer to the sample vial (20) than the sample outlet opening (50). The inlet opening axis (a) of the sample inlet opening (40) is inclined with respect to the inlet cross plane (h) with a inclination angle (A2) of 10.degree. to 80.degree. and is angled with respect to the radius (r) with a tangancy angle (A1) of more than 15.degree..
The invention is directed to a nephelometric turbidimeter vial arrangement (8) including a vial (10) and a separate vial cap (60), wherein the vial (10) comprises a transparent cylindrical vial body (14) enclosing a vial interior (26), a bottom inlet window (16) and a circular top vial opening (13), and the vial cap (60;61) closes the top vial opening (13) and comprises a light trap cavity (70;71) which is open to the vial interior (26), wherein the inner surface (81,82,81',82') of the light trap cavity (70; 71) is a light absorbing surface.
The invention refers to a nephelometric turbidimeter (100) with a cylindrical vial (10) for measuring the turbidity in a fluid sample, preferably in a liquid sample. The vial (10) comprises a transparent vial body (12) comprising a transparent flat bottom inlet window (16) and a transparent cylinder body (14) with a circular outlet window (20). The vial (10) is provided with a cylindrical optical shielding (30) being provided at the cylinder body (14) over a part of the axial length of the cylinder body (14). The shielding (30) is arranged axially adjacent to a non-shielded cylinder part serving as the outlet window (20), the shielding (30) optically blocking the inside from the outside of the vial (10). The optical shielding (30) is provided axially above the outlet window (20) of the cylinder body (14). The optical shielding avoids that a measurement light beam which is reflected by the boundary-layer of the liquid sample and/or by the vial cap and not directly irradiate the scattering light detecting arrangement.
The invention is directed to a nephelometric turbidimeter (10) for measuring a turbidity of a liquid sample (13) in a transparent sample cuvette (12), the turbidimeter (10) comprising a cuvette chamber (16) defined by a cuvette chamber housing (14) wherein the sample cuvette (12) is arranged, and a drying apparatus comprising : a cuvette chamber inlet opening (38) for venting the cuvette chamber (16) and a cuvette chamber outlet opening (42) for deventing the cuvette chamber (16), an air circulator (49) for pumping air from the outlet opening (42) to the inlet opening (38), and a drying body (32) arranged in the drying path between the outlet opening (42) and the Inlet opening (38). This arrangement allows to actively and dynamically control the air humidity within the cuvette chamber (16).
Techniques for controlled aeration (140) of wastewater (190) include determining a first aeration intensity for a first aeration interval and a different second aeration intensity for a second aeration interval (225) based on a current energy price (215), a predicted energy price (221), and a regulatory surveillance period (201) during which a regulated critical parameter is monitored for regulatory compliance. Wastewater is aerated at the first aeration intensity for the first aeration interval; and at the second aeration intensity for the second aeration interval. The first aeration interval is short compared to the regulatory surveillance period, the second aeration interval is short compared to the regulatory surveillance period and does not overlap the first aeration interval, and the first aeration intensity is less than the second aeration intensity. The aeration intensities are determined so that the total cost for the aeration, which includes the energy cost and the potential costs for not complying with regulations, is minimized.
The invention is directed to a nephelometric turbidimeter (10) for measuring a turbidity of a liquid sample (13) in a transparent sample cuvette (12), the turbidimeter (10) comprising a cuvette chamber (16) defined by a cuvette chamber housing (14) wherein the sample cuvette (12) is arranged, and a drying apparatus comprising : a cuvette chamber inlet opening (38) for venting the cuvette chamber (16) and a cuvette chamber outlet opening (42) for deventing the cuvette chamber (16), an air circulator (49) for pumping air from the outlet opening (42) to the inlet opening (38), and a drying body (32) arranged in the drying path between the outlet opening (42) and the Inlet opening (38). This arrangement allows to actively and dynamically control the air humidity within the cuvette chamber (16).
A turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette includes a cuvette receiving device configured to position the sample cuvette in a defined cuvette position, a light source configured to generate a parallel light beam in the sample cuvette, an annular 45° collecting mirror configured to surround the sample cuvette, a scattering body arranged concentric to the annular 45° collecting mirror, a scattering light detector arranged to receive light scattered by the scattering body, and an annular 45° concentration mirror arranged coaxially to the annular 45° collecting mirror and optically opposite to the annular 45° collecting mirror. The annular 45° collecting mirror is arranged concentric to the light beam. The annular 45° concentration mirror is configured to surround the scattering body.
Methods and arrangements for collecting data related to a water quality sample location. Identifying information of a water quality sample container is electronically obtained, and identifying information of a water quality sample location is electronically obtained. There is placed, in the container, a water sample from the water quality sample location. There is stored the identifying information of the water quality sample container and the identifying information of the water quality sample location: such storing includes associating the identifying information of the water quality sample container and the identifying information of the water quality sample location. Other variants and embodiments are broadly contemplated herein, including methods and arrangements for validating water quality sample data.
Methods and arrangements for collecting data related to a water quality sample location. Identifying information of a water quality sample container is electronically obtained, and identifying information of a water quality sample location is electronically obtained. There is placed, in the container, a water sample from the water quality sample location. There is stored the identifying information of the water quality sample container and the identifying information of the water quality sample location; such storing includes associating the identifying information of the water quality sample container and the identifying information of the water quality sample location. Other variants and embodiments are broadly contemplated herein, including methods and arrangements for validating water quality sample data.
A basic unit for a mobile water analyzing system includes a photometer comprising a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam, a test element receptacle configured to allow a test element to be inserted therein, and a photometric measuring track arranged between the light source and the light detector. The measurement beam is coincident with the photometric measuring track during a photometric measurement, and not in a cross direction thereto.
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
The invention refers to a nephelometric turbidimeter (10)for measuring a turbidity of a liquid sample (49) in a sample cuvette (40) The turbidimeter (10) comprises a measurement light source (20) for emitting an axial parallel light beam (60) directed to the cuvette (40), a scattering light detector (30) arranged to receive scattered light (66) coming not-axially from the cuvette (40), and a switchable diffuser (50) with an optical diffuser body (52) and a diffuser actuator (54) for moving the diffuser body (52, 52') between a parking position in which the diffuser body (52) does not interfere with the emitted light beam (60) and a test position between the light source (20) and the cuvette (40) in which the diffuser body (52') interferes with the emitted light beam (60) to generate diffuse test light (63) entering the cuvette (40)
The invention refers to a nephelometric turbidimeter (10) for measuring a turbidity of a liquid sample (49) in a sample cuvette (40). The turbidimeter (10) comprises: a measurement light source (20) for emitting an axial parallel light beam (60) directed to the cuvette (40), a scattering light detector (30) arranged to receive scattered light (66) coming not-axially from the cuvette (40), and a switchable diffuser (50) with an optical diffuser body (52) and a diffuser actuator (54) for moving the diffuser body (52, 52') between a parking position in which the diffuser body (52) does not interfere with the emitted light beam (60) and a test position between the light source (20) and the cuvette (40) in which the diffuser body (52') interferes with the emitted light beam (60) to generate diffuse test light (63) entering the cuvette (40).
A turbidimeter (10) for measuring a turbidity of a liquid sample (34) in a sample cuvette (30) includes a cuvette receiving means (33) for positioning the sample cuvette (30) in a defined cuvette position (36). A light source (20) generates a parallel light beam (24) in the sample cuvette (30). An annular 45° collecting mirror (12) surrounds the sample cuvette (30). The annular 45° Collecting mirror (12) is arranged concentric to a light beam (24). A cylindrical scattering body (44) is arranged concentric to the annular 45° collecting mirror (12). A scattering light detector (50) is arranged to receive light scattered by a scattering body (44). An annular 45° concentration mirror (40) is arranged coaxially to the annular 45 collecting mirror (12). The annular 45° concentration mirror (40) surrounds the scattering body (44) and is arranged optically opposite to the annular 45° collecting mirror (12).
A turbidimeter (10) for measuring a turbidity of a liquid sample (34) in a sample cuvette (30) includes a cuvette receiving means (33) for positioning the sample cuvette (30) in a defined cuvette position (36). A light source (20) generates a parallel light beam (24) in the sample cuvette (30). An annular 45° collecting mirror (12) surrounds the sample cuvette (30). The annular 45° Collecting mirror (12) is arranged concentric to a light beam (24). A cylindrical scattering body (44) is arranged concentric to the annular 45° collecting mirror (12). A scattering light detector (50) is arranged to receive light scattered by a scattering body (44). An annular 45° concentration mirror (40) is arranged coaxially to the annular 45 collecting mirror (12). The annular 45° concentration mirror (40) surrounds the scattering body (44) and is arranged optically opposite to the annular 45° collecting mirror (12).
A method for locating an optical identification on a cuvette includes providing a cuvette comprising an axial locating bar with a fixed bar width with a fixed geometric relationship with an identification. A laboratory analyzer is provided comprising a cuvette chamber, a cuvette rotating device, and a digital camera with an axial resolution of more than 10 lines. The digital camera is associated with the cuvette chamber. At least four respective non-adjacent lines of the digital camera are read in. The identification is searched for. If at least three mutually successive read-in lines comprising approximately axially in-line reflection signals of the axial locating bar with the fixed bar width are registered, the cuvette is rotated by an angle corresponding to the fixed geometric relationship so that identification is aligned with the digital camera. The identification is read in by reading out a plurality of adjacent lines of the digital camera.
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
94.
Method for determining a condition indicator of an apparatus
A method for determining a condition indicator of an apparatus includes providing an apparatus configured to measure at least two different technical parameters. A respective parameter value is determined for each of the at least two different technical parameters of the apparatus using at least one sensor configured to determine a respective parameter value for each of the at least two different technical parameters. A respective deviation value is determined for each of the parameter values with respect to an associated respective parameter reference value for each of the technical parameters. A respective deviation relevance value is determined from each of the deviation values using a respective parameter-specific deviation relevance function for each of the parameter values, the parameter-specific deviation relevance functions being different from each other. Using an indicator function, a condition indicator is calculated from the determined deviation relevance values. An overall condition of the apparatus is determined using the condition indicator.
A method for determining an analyte of a liquid sample in a cuvette includes providing a cuvette, a reagent, a barcode, an icon on the cuvette and a liquid analysis device comprising a photometer, a rotation device, a camera, a calibration data memory storing first calibration data, and an input device which manually inputs second calibration data. The cuvette is inserted into the liquid analysis device and is rotated to align the icon with the camera. The icon is read with the camera and the icon read compared with an icon model stored in the liquid analysis device to determine whether it corresponds thereto. The liquid sample is subjected to photometry based on the first calibration data if the icon read corresponds to the icon model. If not, the input apparatus is activated and the liquid sample is subjected to photometry on the basis of the second calibration data.
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01N 35/00 - Automatic analysis not limited to methods or materials provided for in any single one of groups Handling materials therefor
A water analysis sensor electrode for determining an analyte in water includes a sensor electrode housing which is configured to be closed. The sensor electrode housing comprises an inner wall and an ion-selective sensor electrode diaphragm arranged at a lower distal end of the sensor electrode housing. An electrolyte solution is in the sensor electrode housing. A measuring electrode is arranged in the sensor electrode housing. A gas bubble is enclosed by the sensor electrode housing. A rigid rod element having a round cross section is arranged in the sensor electrode housing so that a continuous open capillary channel extends over a length of the sensor electrode housing between the rigid rod element and the inner wall.
A transport container system for a water analysis sensor cartridge includes a water analysis sensor cartridge configured to be interchangeable. The water analysis sensor cartridge comprises at least two different sensor membranes. A transport container cup comprises, for each of the at least two different sensor membranes, a separate moist chamber. Each separate moist chamber comprises one chamber opening and a specific humectant for each of the at least two different sensor membranes.
The invention relates to a maintenance arrangement (10) for maintaining an environment analysis device (12). The maintenance arrangement (10) comprises: the stationary environment analysis device (12) comprising a manual input means (25), a monitor (24) and a barcode generator (27), which generates a barcode (23) for display on the monitor (24) from an input information item, wherein the barcode (23) contains a virtual target address; and a mobile service device (14) comprising a digital camera (30), a barcode reading module (31) and a radio module (36) for establishing a radio link to a stationary radio station (16). The barcode reading module (31) extracts the virtual target address from the barcode (23) read by the digital camera from the monitor, whereupon the target address is transmitted by the radio module (36) to the radio station (16), which connects the service device (14) to a target device (12, 18) having the target address.
The invention relates to a fluid analysis device (10) having a base device (12) and a separate replaceable fluidic module (14), having a two-part microfluidic fluid diaphragm pump (20, 21, 22; 80). The fluid analysis device (10) comprises a pump chamber (34) and a pump diaphragm (54) having a ferromagnetic displacement means (40) operatively connected to the pump diaphragm (54). The pump chamber (34), the pump diaphragm (54) and the displacement means (40) are provided on the fluidic module (14). A magnetic element (50) that generates a variable magnetic field is provided on the side of the pump diaphragm (54) facing away from the pump chamber (34). The displacement means (40), and the pump diaphragm (54) moved thereby, is moved between an intake position and a discharge position by the magnetic field in order to generate a pumping movement of the pump diaphragm (54), wherein the magnetic element (50) is provided on the base device (12).
