Electromagnetic flowmeter eh| lpg flow meter

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1. What does the S441 current output 1 mean for the E H electromagnetic flowmeter?

When the fluid in the E H electromagnetic flowmeter is stationary and the tube is full, the sensitivity of the flowmeter is extremely high. Any external noise or circuit noise can cause output changes. So hunger is a normal phenomenon. Activate the "small flow cutoff" function of the flowmeter and input or increase the value of this cutoff point. (The function is to consider that there is no flow when the flow rate is less than a certain value of the positive limb, that is, to cut off the flow signal below this value.)

2. E+H electromagnetic flowmeter fault problem

The electrode contamination or coverage of the electromagnetic flowmeter causes the measurement zero point to be unstable and the output to shake.

. Firstly, the concept of zero point instability in electromagnetic flow meters: The zero point of an electromagnetic flow meter refers to the situation where when the measuring pipeline is filled with the measuring medium, that is, when the fluid medium inside the measuring pipeline is kept still, the displayed value of the electromagnetic flow meter should be 0. If it is not 0, it indicates the occurrence of zero point drift, that is, zero point instability. The consequence of the unstable zero point of the electromagnetic flowmeter is that the measured value of the electromagnetic flowmeter will experience significant output shaking, which will seriously affect the measurement performance of the flowmeter. Customers can use the zero point correction function to correct it. Please refer to: The significance and method of zero point correction for electromagnetic flowmeters. Electromagnetic flowmeter manuf Electromagnetic flowmeter eh

acturers have summarized countless cases that electrode contamination and coverage can also cause the zero point instability and output shaking of the flowmeter. The following methods can be used to determine whether the zero point instability of the flowmeter is caused by electrode problems: measuring the polarization voltage between the electrode and the liquid will help determine whether the fault of zero point instability or output shaking is caused by electrode contamination or coverage. Use a digital multimeter with a 2V DC range to measure the polarization voltage between the two electrodes and ground (the electromagnetic flowmeter can be measured without power or without power). If the two measurements are almost equal, it indicates that the electrode is not contaminated or covered, otherwise it indicates that the electrode is contaminated or covered. The polarization voltage is determined by the electrode materials "electric silver code electrode potential" and the properties of the liquid, and the measured value may range from a few mV to several hundred mV. Because in reality, the contamination of the two electrodes during operation cannot be completely symmetrical, so the voltage on the two electrodes forms an asymmetric common mode voltage. Asymmetric common mode voltage becomes a differential mode signal, causing zero offset. The above are the reasons and judgment methods for zero point instability and output shaking caused by electrode contamination or coverage of electromagnetic flow meters. Technical article from Pingdingshan Qinlu Flow Measurement and Control Instrument Co., Ltd., which includes many common types of faults and solutions for electromagnetic flow meters. Reference materials for electromag

Electromagnetic flowmeter eh

1. What does the S441 current output 1 mean for the E H electromagnetic flowmeter?

2. E+H electromagnetic flowmeter fault problem

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