『Flow meter fluctuation』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
What are the reasons for the large fluctuations in electromagnetic flow meters?
There are generally various reasons for the large fluctuations in electromagnetic flow meters, such as when there is no flow. The main reasons for the large fluctuations are as follows:
1. There are some interference factors near the instrument, such as motors, frequency converters, etc;
2、 There is a problem with the circuit;
3、 It is possible that the grounding is loose;
4、 The air traffic control alarm has not been set. The electromagnetic flowmeter fluctuates greatly under normal operation, and the main reasons may be as follows:
1. Incorrect installation position. Not satisfied with the pipeline, or gas residing in the pipeline system, or inhaling bubbles; Installed on a vertical pipeline from top to bottom, there may be reasons such as emptying.
2、 If a liquid contains uniformly distributed small bubbles, it will not affect normal measurement. However, if the measured volumetric flow rate is the sum of the liquid and gas, the increase in bubbles will cause fluctuations in the output signal.
3、 Medium fluctuations or pulsations.
4、 The electrode is contaminated or the electrode suitable for the measured liquid is not selected correctly. In order for the Huaishang electromagnetic flowmeter to perform its efficient and accurate measurement function, it is necessary to pay attention to instrument maintenance and regularly check the working condition of the instrument. Discovering problems and finding solutions in a timely manner will not cause greater losses. Kind reminder: The above content is for reference only. Response time: September 29, 2021. Please refer to the officia
2. What should I do if the displayed value of the flowmeter fluctuates greatly and is not accurate?
First, check for non fault fluctuations, and then deal with hardware or calibration issues accordingly. Most of them can quickly solve the problem of inaccurate flowmeter # # 1 First, confirm whether it is a non fault fluctuation. Often, large numerical fluctuations are not caused by damage to the flowmeter itself, but by external environmental factors. 1. Unstable medium flow: for example, there are air pockets in the pipeline, pump start stop fluctuations, and frequent valve opening and closing, which can cause significant fluctuations in instantaneous flow. You can observe whether there are abnormal noises or bubbles in the pipeline and try to stabilize the upstream feed/liquid pressure Improper installation position: The flowmeter is installed near the pump outlet, elbow, and valve, which may be affected by fluid disturbance. It is recommended to move it to a straight section of the pipeline and reserve at least 5 times the diameter of the pipe for installation Power supply/signal interference: If electromagnetic flow meters and turbine flow meters are close to strong electrical equipment or frequency converters, electromagnetic interference may occur, causing reading jumps. The shielded cables in Zhenshan can be replaced or signal isolators can be added Classify and troubleshoot hardware faults and calibrate # # # # 2.1 Mechanical flow meters (turbine, waist wheel, elliptical gear) 1 Cleaning the sensor chamber
Hot Blog
Related AD
