Medium reasons: The medium contains bubbles or suspended substances, resulting in uneven distribution of fluid in the flow meter tube, and then Causes values to jump randomly.
1. Analysis of the causes of random numerical jumps
1. Physical factors
① Medium reasons: The medium contains bubbles or suspended substances, resulting in uneven distribution of fluid in the flow meter tube, and then Causes values to jump randomly.
②Fluid reasons: The temperature, pressure and flow fluctuations of the medium itself may cause the values to jump randomly, especially when there are gases and solid particles in the medium.
2. Equipment factors
①Electromagnetic interference: Electrical equipment and signal cables may cause interference to the electromagnetic flowmeter, resulting in unstable meter readings or errors; ②Unstable power supply ;③Instrument failure.
2. How to solve the problem
1. Physical factors
① Cleaning medium: In order to avoid random jumping caused by bubbles, suspended matter and other reasons, cleaning medium is the solution important measure of the problem. ②Optimize the fluid: By controlling factors such as temperature, pressure, flow rate, etc., the fluctuations within the medium are reduced to improve numerical fluctuations and avoid random jumps. This can be achieved through the use of control valves and flow controllers.
2. Equipment factors
① Reduce electromagnetic interference: block interference sources or use anti-interference equipment such as anti-interference cables, different sensors, converters or signal isolators. ② Use a stable power supply; ③ Replace damaged parts or the entire device.
3. Suggestions on the correct use of electromagnetic flowmeter
1. Choose the appropriate model. For different media, different models should be selected.
2. Install in a suitable location. Avoid installing electromagnetic flowmeters in places with unstable medium flow such as elbows, pumps or valves, and avoid using them under conditions such as high temperature and strong magnetic fields.
3. Check and calibrate the meter regularly, and replace damaged parts in a timely manner.
As a common industrial measuring instrument, electromagnetic flowmeter is widely used in flow measurement of various media. However, various problems will inevitably occur during use, such as random numerical jumps. In order to solve these problems, we need to carefully analyze the causes and take effective measures. At the same time, reasonable selection of the model, installation location, and regular inspection and calibration of the meter are all important steps to ensure the normal operation of the flow meter.
Hangzhou Economic Development Area，Hangzhou 310018，China
