Non-contact high pressure water injection flow meters for plunger pumps are designed to measure the flow of water injected by the pump without physical contact with the fluid. This type of flow meter uses principles such as ultrasonic or electromagnetic measurements to determine flow. The following is a general overview of the mechanism behind a non-contact high pressure water injection flow meter:        1. Ultrasonic flowmeter: a non-contact flowmeter based on the principle of ultrasonic measurement. It uses ultrasonic waves to measure the velocity of flowing water and calculates the flow rate based on the time it takes for the waves to travel between transducers located in the flow path.        - Sensor configuration: The flow meter consists of two sensors placed on opposite sides of the pipe or flow path into which the water is injected. One transducer acts as a transmitter, sending ultrasonic waves into the water, while the other acts as a receiver, detecting the ultrasonic waves after they pass through the water.        - Time-of-flight measurement: Measures the transit time of ultrasound waves between transducers. As water flows through the pipe, it carries ultrasonic waves, causing a difference in the measured transit time. This time difference is proportional to the flow rate of the water.        -Flow calculation: The flow meter uses the measured time difference and the known cross-sectional area of the pipe to calculate the volumetric flow of water. This calculation can be done using various algorithms and signal processing techniques.      

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  2. Electromagnetic flowmeter: Another non-contact flowmeter is based on the electromagnetic principle. It uses the interaction between water flow and a magnetic field to determine flow velocity.        - Magnetic Field Generation: The flowmeter consists of a pair of electromagnetic coils or electrodes located outside the pipe or flow path. These coils generate a magnetic field that penetrates the pipe and interacts with the conductive water flowing inside.        - Induced voltage measurement: When water flows through a magnetic field, a voltage proportional to its velocity is induced in the water. This induced voltage is measured by electrodes or coils, providing information about the flow.        -Flow calculation: The flow meter uses the measured induced voltage and known properties of the water (such as conductivity) to calculate the volumetric flow. Signal processing algorithms are used to convert the induced voltage into a flow reading.        3. Precautions for installation: The correct installation of non-contact flowmeter is very important for accurate measurement. Flow meters should be installed in sections of pipe where the water flow is fully developed and steady, with minimal turbulence or obstructions. It is also important to ensure that the flowmeter is properly aligned and mounted securely to prevent movement or misalignment that could affect measurement accuracy.        90-R-055-KN-5-AB-80-S-3-S1-D-03-GBA-38-38-24 90R055KN5AB80S3S1D03GBA383824        90-R-055-KN-5-AB-80-S-3-S1-C-03-GBA-35-35-24 90R055KN5AB80S3S1C03GBA353524        90-R-055-KN-5-AB-80-S-3-C6-C-03-GBA-30-30-24 90R055KN5AB80S3C6C03GBA303024        90-R-055-KN-5-AB-60-R-3-S1-C-03-GBA-17-17-24 90R055KN5AB60R3S1C03GBA171724        90R055-KN-5-AB-60-R-3-S1-C-03-GBA-17-17-24 90R055KN5AB60R3S1C03GBA171724        90-R-055-KN-5-AB-60-P-3-C6-C-04-GBA-42-42-20 90R055KN5AB60P3C6C04GBA424220        90R055-KN-5-AB-60-P-3-C6-C-04-GBA-42-42-20 90R055KN5AB60P3C6C04GBA424220        90-R-055-KN-2-NN-80-P-3-C6-D-00-GBA-30-30-24 90R055KN2NN80P3C6D00GBA303024        90-R-055-KN-2-NN-80-L-4-T1-D-05-GBA-26-26-20 90R055KN2NN80L4T1D05GBA262620        90-R-055-KN-2-AB-80-P-4-C6-B-03-GBA-26-26-22 90R055KN2AB80P4C6B03GBA262622        90-R-055-KN-2-AB-60-S-3-S1-D-03-GBA-42-42-24 90R055KN2AB60S3S1D03GBA424224        90-R-055-KN-1-NN-80-S-4-S1-C-03-GBA-35-35-24 90R055KN1NN80S4S1C03GBA353524        90-R-055-KN-1-NN-80-S-4-S1-C-03-GBA-29-14-20 90R055KN1NN80S4S1C03GBA291420        90-R-055-KN-1-NN-80-R-4-S1-D-03-GBA-32-32-24 90R055KN1NN80R4S1D03GBA323224        90-R-055-KN-1-NN-80-R-4-S1-C-03-GBA-35-35-24 90R055KN1NN80R4S1C03GBA353524        90-R-055-KN-1-NN-80-R-3-S1-D-03-GBA-35-35-24 90R055KN1NN80R3S1D03GBA353524        90-R-055-KN-1-NN-80-P-3-S1-D-03-GBA-21-21-24 90R055KN1NN80P3S1D03GBA212124        90-R-055-KN-1-NN-80-L-3-S1-D-03-GBA-17-17-24 90R055KN1NN80L3S1D03GBA171724        90-R-055-KN-1-NN-60-D-4-S1-L-03-GBA-20-20-28 90R055KN1NN60D4S1L03GBA202028        90-R-055-KN-1-CD-80-S-4-S1-C-03-GBA-42-42-24 90R055KN1CD80S4S1C03GBA424224      

 4. Signal Processing and Calibration: Non-contact flow meters typically require signal processing and calibration to convert measurement data into accurate flow readings. Signal processing algorithms are employed to analyze and interpret the signals received from the transducers or electrodes. Calibration involves establishing a correlation between the measured signal and a known flow rate using calibration standards or reference measurements. To maintain measurement accuracy over time, periodic calibration checks may be required.        5. High pressure compatibility: Non-contact flow meters designed for high pressure water injection applications should be designed and constructed to withstand the high pressures associated with plunger pumps. Materials of construction, seals and overall mechanical strength should be suitable for the expected pressure range to ensure reliable and safe operation.        6. Measurement accuracy and limitations: The accuracy of a non-contact flowmeter can be affected by a variety of factors, including the quality of the ultrasonic or electromagnetic signal, temperature changes, fluid properties (such as conductivity or viscosity), and flow profile. It is important to understand the specified accuracy and limits of the flowmeter under the operating conditions of the piston pump application.        7. Maintenance and cleaning: Regular maintenance and cleaning of non-contact flow meters is essential to ensure optimal performance. Any dirt, deposits or obstructions on the sensor or electrodes can affect measurement accuracy. Follow the manufacturer's guidelines for cleaning and maintenance procedures to prevent flow meter degradation.        8. Integration with pump control system: In order to make full use of the data provided by the non-contact flowmeter, it can be considered to integrate it with the pump control system. This allows flow to be monitored and controlled in real time, allowing pump settings to be adjusted or alarms to be triggered in abnormal flow conditions.        It is important to note that the specific details and features of non-contact high pressure water injection flow meters may vary by manufacturer and model. Consulting with the meter manufacturer, an industry expert, or an experienced engineer can provide more specific information and guidance on the mechanism, installation and use of a non-contacting meter combined with a plunger pump.