How to distinguish the quality of vortex flowmeter from good and bad?

Abstract: How to distinguish the quality of vortex flowmeter from good and bad? The information is provided to you by the excellent manufacturers of flowmeters and flowmeters. Vortex flowmeter products are composed of vortex flow sensors and display instruments, which can be used in almost all flow measurement, measurement and control of gas, liquid and steam. The vortex flow sensor has no moving part, good repeatability, high measurement accuracy, and output signal. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is how to distinguish the quality of vortex flowmeters from good and bad? Article details. Vortex flowmeter products are composed of vortex flow sensors and display instruments, which can be used in almost all flow measurement, measurement and control of gas, liquid and steam. The vortex flow sensor has the advantages of no moving part, good repeatability, high measurement accuracy, and the output signal frequency is proportional to the flow rate. Its market scale is rapidly expanding, and its market share is also increasing every year. The key technology of vortex flow sensor design lies in three aspects: 1. Sensor body design. When the fluid passes through, a stable Karman vortex signal is generated; 2. The design of the sensor probe. The piezoelectric crystal is encapsulated in the probe. When the Karman vortex signal acts on the probe, the piezoelectric crystal in the probe will turn the vortex signal into a vortex electric signal; 3. Design of amplifying circuit. How to amplify and shape the vortex electric signal into the corresponding pulse signal, how to distinguish the quality of the vortex flowmeter from bad? Today I will tell you: 1. Probe: There are two piezoelectric crystals inside, one for anti-vibration interference and one for detection. The probe leads are the two leads of the test piece. The probe shell is inserted into the vortex body tube wall and fixed on the vortex body tube wall through the fixing flange. The probe can work normally under 300℃, and can resist up to 350℃. If the temperature is higher, it will destroy the sealed porcelain body, degrade the performance of the probe, and even damage the probe. We have available multimeters“×10k”If there is resistance, the performance of the probe will be degraded; if it is below tens of kiloohms, the probe will be damaged. 2. Circuit board: Its design is directly related to whether the signal generated by the vortex street is correct or not. We can usually view the waveform generated by the flowmeter when it is working on an oscilloscope. In addition, the sealing of the sensor and the meter body is very important in the production of the vortex flowmeter. If the sealing is not good, the meter will leak. If the flow rate of the vortex flowmeter is unstable, first measure whether the voltage of the vortex street is stable at about 12V. The corner circuit board is generally around 3V. Finally, measuring the two lines of the vortex sensor can usually see the waveform generated by the flowmeter when the flowmeter is working. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to distinguish the quality of vortex flowmeter from good and bad? 》

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