The invention relates to a method for detecting foreign entities (E) in a fluid flow (F), in particular gas bubbles or particulate solids, wherein the method is carried out by means of a vortex flowmeter system (1) having a vortex sensor (11), and wherein at least the following method steps are carried out: - continuous sensing of a measurement signal (S) by means of the vortex sensor (11), - determining an actual value of at least one measured variable dependent on the measurement signal (S), wherein the measured variable is sensitive to foreign entities (E) entrained in the fluid flow (F), - determining a deviation of the actual value from a setpoint value, wherein the setpoint value characterises the fluid flow (F) without foreign entities (E), - determining and outputting an indicator signal (I), based on the deviation of the actual value, as a measure for the concentration of foreign entities (E) entrained in the fluid flow (F).
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
G01F 1/74 - Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
The invention relates to a sensor unit (1) for a flowmeter (100) for measuring the flow rate of a fluid in accordance with the vortex principle, wherein the sensor unit (1) is configured for arrangement in a measuring tube (10) or at another fluid conducting body (10a), wherein the sensor unit (1) has at least one base member (11) and one measuring sensing element, (12), and wherein the measuring sensing element (12) is received in or at the base member (11), In accordance with the invention, the base member (11) has a frame portion (13) that at least partially surrounds the measuring sensing element (12), and with an elastomeric body (14) being provided by means of which the measuring sensing element (12) is held at the frame portion (13). The invention is further directed to a flow meter (100) having such a sensor unit (1).
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
G01F 1/325 - Means for detecting quantities used as proxy variables for swirl
A flowmeter for measuring the flow rate of a fluid has a measuring tube which forms a measurement space through which the fluid can flow. At least one disruptive body is arranged in the measurement space. The measurement space additionally has, downstream of the disruptive body, a pickup arranged in it that can be deflected based on a vortex formation at the disruptive body. In order to minimize the flow resistance for the fluid when flowing through the flowmeter, the measuring tube has an elliptical cross-section at least in the region of the arrangement of the disruptive body.
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
4.
METHOD FOR OPERATING A TEMPERATURE CALIBRATOR WITH COOLING UNIT
A method of operating a temperature calibrator for calibrating a temperature sensor having a calibration block into which the temperature sensor is introduced and having a heating means by which the calibration block is heated and having a cooling unit by which the calibration block is cooled and an actuator by which the cooling unit is brought into thermal conductivity contact with the calibration block during cooling and is spatially separated from the calibration block during heating while forming an air gap. The invention further relates to a temperature calibrator is also disclosed.
The invention relates to a method for determining the temperature of a fluid (F) flowing through a line body (1), at least having the following steps: - generating a thermal model of the line body (1), said thermal model being suitable for calculating the time curve of the surface temperature of a measurement section of the exterior of the line body (1) from a known time curve of the fluid temperature, and - continuously repeating the following steps: i. calculating the surface temperature of the measurement section of the exterior of the line body (1) using the thermal model on the basis of an estimated value of the fluid temperature, ii. measuring the surface temperature of the measurement section of the exterior of the line body (1), iii. correcting the estimated value of the fluid temperature such that the measured surface temperature has the highest degree of probability on the basis of the corrected estimated value of the fluid temperature in the thermal model, and iv. outputting the corrected estimated value of the fluid temperature.
The subject of the invention is a flowmeter (1) for measuring the flow rate of a fluid, having a measuring tube (10), which forms a measurement space (11) through which the fluid can flow, and having at least one disruptive body (12), which is arranged in the measurement space (11), and wherein the measurement space (11) additionally has, downstream of the disruptive body (12), a pickup (13) arranged in it that can be deflected based on a vortex formation at the disruptive body (12). In order to minimize the flow resistance for the fluid when flowing through the flowmeter (1), the measuring tube (10) has, according to the invention, an elliptical cross-section (Q1) at least in the region of the arrangement of the disruptive body (12).
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
A calibration setup for calibrating a temperature sensor includes a temperature calibrator, a temperature measuring unit connected to the temperature sensor, a camera unit configured to detect a measured temperature value and to transmit the measured temperature value to a storage medium in the temperature calibrator. A method of calibrating a temperature sensor using the calibration setup includes heating the temperature sensor to a first calibration temperature; detecting a first temperature value by the camera unit; transmitting the first temperature value from the camera unit to a storage medium in the temperature calibrator; heating the temperature sensor to at least a second calibration temperature; detecting a second temperature value by the camera unit; transmitting the second temperature value from the camera unit to the storage medium; and displaying the detected and stored temperature values on a calibrator indicator display in a respective association with the calibration temperatures.
G01K 15/00 - Testing or calibrating of thermometers
G01K 1/022 - Means for indicating or recording specially adapted for thermometers for recording
G08B 5/22 - Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmissionVisible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electromagnetic transmission
H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
8.
Flow measurement method and a flow measurement device for optical flow measurement
A flow measurement method for optical measurement of a volume flow of a fluid in a closed cross-section, and a flow measurement device for this purpose, has at least one light source and at least one sensor unit. Particles present in the fluid are detected within a measurement plane by the sensor unit. At least one measurement plane and the particles present therein are illuminated with the light source. The sensor unit is provided with at least two or with a plurality of individual detectors with which sensor signals are outputted. A computing unit is connected downstream of the sensor unit, with which the sensor signals are processed in real time by integrating and weighting the individual signals of the individual detectors using a spatial-filtering technique and outputted as an output signal.
A pipe adapter for optical flow measurement having a fluid pipe that has a flow-through inner flow space. At least one window element transparent to a measurement optics is introduced in the fluid pipe. The fluid pipe is surrounded, at least in the region of the window element, by a pressure-resistant housing by which the window element is mounted in an inner housing space, and with the inner housing space is at least indirectly fluidically interactive and/or in fluidic communication with the inner flow space.
G01P 5/26 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
G01F 1/66 - 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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
G01F 15/18 - Supports or connecting means for meters
A method for calibrating a temperature measuring device having a temperature measuring unit and having at least one sensor connectable to the temperature measuring unit includes the steps of providing a temperature calibrator having a sensor mount into which the sensor is inserted and heated to a test temperature, inserting the at least one sensor into the sensor mount, setting up a communication channel for a data transmission between the temperature calibrator and the temperature measuring device, and transmitting a calibration value from the temperature calibrator to the temperature measuring device by means of the communication channel.
G01K 15/00 - Testing or calibrating of thermometers
G01K 7/42 - Circuits effecting compensation of thermal inertiaCircuits for predicting the stationary value of a temperature
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
11.
Device and method for determining the flow velocity of a fluid in a hollow body
A device and a method for determining the flow velocity of a fluid in a hollow body, including at least one disturbance device disposed in the hollow body and at least one sensor for identifying disturbances that are induced in the flow by the disturbance device, which is disposed at a certain distance downstream in the direction of flow from the disturbance device, wherein the disturbance device includes means for generating changeable disturbances in the fluid flow.
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
A flow meter for measuring the flow velocity of a fluid includes a measurement tube that is axially bounded by at least one flange end and that forms a measurement space that can be flowed through by the fluid. At least one baffle is provided for generating interference in the flow, wherein the baffle is arranged in the measurement space. A detector for detecting the interference is arranged downstream of the baffle. An insertion element is introduced into the measurement tube and has a base portion. The base portion is arranged in the flange end. The insertion element has brackets that adjoin the base portion and that project into the measurement space, with the baffle being formed and its position in the measurement space being held between the brackets.
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
A temperature calibrator for calibrating temperature function devices has an outer and an inner housing as well as a calibrator block. The calibrator block is radially spaced from the inner housing to form a flow space. The flow space is in communication with the environment at the upper end and at the lower end to generate a flow. A fan having a fan wheel that can be driven by a motor is connected to the flow space. The fan wheel is formed from a heat-resistant material; and the fan forms a predominantly closed surface in a plan view.
A flow meter for measuring the flow rate of a fluid, with a measuring tube that forms a measurement chamber through which the fluid can flow and with at least one bluff body that is disposed in the measurement chamber and wherein, additionally, a measuring body, which can be displaced due to the formation of vortices at the bluff body, is disposed downstream of the bluff body in the measurement chamber. The flow meter has at least one protrusion protruding into the measurement chamber and is formed upstream of the bluff body at an inner wall delimiting the measurement chamber.
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
A block calibrator for calibrating a temperature sensor includes a calibrator sleeve having at least one sensor bore into which the temperature sensor is insertable along a longitudinal direction. The calibration sleeve also includes a body having at least two sections having different thermal conductivities.
A block calibrator for calibrating a temperature sensor with a heating block, on which or in which at least one heating appliance is disposed, and wherein the heating block features a receiving bore for receiving a calibration insert, into which a test object formed by a temperature sensor can be inserted. According to the invention, an air gap (L) is formed at least in certain areas between an internal wall of the receiving bore and an external wall of the calibration insert.
G01K 15/00 - Testing or calibrating of thermometers
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
G05D 23/19 - Control of temperature characterised by the use of electric means
The invention relates to a method for regulating the temperature of the calibration volume of an apparatus for comparative calibration of temperature sensors to a target temperature, wherein said calibration device comprises heat sources and/or heat sinks, which are in thermal contact via a heat conducting part or a plurality of heat conducting parts with the calibration volume, wherein in at least one process step the real thermal state is calculated, wherein the Kalman filter is fed the measurement values of a temperature sensor located in the calibration device, and in at least one more process step the future thermal state is calculated using a thermal model of the dynamics of states.
G01K 15/00 - Testing or calibrating of thermometers
G05D 23/19 - Control of temperature characterised by the use of electric means
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
G05B 17/00 - Systems involving the use of models or simulators of said systems
19.
Calibrator for calibrating devices with a temperature function
A calibrator for calibrating devices with a temperature function, e.g. thermometers or thermal switches has an input and display unit. The calibrator has a capacitive touchscreen with the input and display unit.
G01K 15/00 - Testing or calibrating of thermometers
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
The invention relates to a magnetically inductive flow meter (MID) for determining the flow rate of a liquid or gaseous medium in a pipe line section (2), wherein the flow meter comprises at least one measuring electrode (3a, 3b) in a magnetic field generated by a magnetic field-generating arrangement, wherein the magnetic field-generating arrangement is arranged at least partially within the free cross-section (4) of the pipeline section (2).
G01F 1/58 - 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 electromagnetic flowmeters
The invention relates to a flow meter, comprising a housing having an inner lateral face, through which housing a liquid or a gas flows, wherein the housing has at least one piezoelectric film for generating electrical energy arranged on the inner lateral face thereof, wherein an electronic circuit is provided with an output device that is connected to the piezoelectric film, wherein a value for the rate of flow, which value is dependent on the electrical energy generated by the piezoelectric film, is specified by the output device.
G01F 1/32 - 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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
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