As an industrial electronic sensor device, the e+h electromagnetic flowmeter will inevitably have some equipment failures during use.
Common faults and treatment methods of E+H electromagnetic flowmeter
As an industrial electronic sensor device, the e+h electromagnetic flowmeter will inevitably have some equipment failures during use, then when the electromagnetic flowmeter fails, we usually need to analyze which component has the problem, and then find a solution to the problem corresponding to the problem. Below, we will explain the common uses of electromagnetic flowmeters in daily life. of the fault, and then how to deal with the fault.
1. If the E+H electromagnetic flowmeter has no flow output and this happens, you must first check the power supply of the instrument to see if there is a power failure. If the power supply is faulty, check the fuse to ensure that the fuse is in contact with the power supply. After the power supply problem is eliminated, you can further check whether the arrow of the sensor is consistent with the direction of fluid flow. If it is inconsistent, you need to change the installation direction of the sensor. Finally, you can check whether the sensor is filled with fluid. If there is no fluid in the sensor, you need to replace the pipe or It is to change the installation method. You can try to install it vertically. 2. When the signal of the E+H electromagnetic flowmeter becomes smaller and smaller or the signal suddenly drops and such a fault occurs, the insulator between the electrodes can be tested to check whether the insulator is damaged or short-circuited. Generally, two The normal value of the resistance between the electrodes is between 70 and 100Ω. Another reason may be scaling on the inner wall of the measuring tube. At this time, the electrodes should be wiped to avoid scratches on the lining. If the lining is damaged, the lining should be replaced. 3. The zero point of the E+H electromagnetic flowmeter is unstable. It is necessary to check whether the medium is full of the pipe and whether there are bubbles in the medium. If there are bubbles, install an air eliminator upstream of the bubbles. The horizontal installation of the instrument can also be changed to vertical installation. Check whether the instrument is It must be well grounded. If necessary, perform third-level grounding. The grounding resistance should be ≤100Ω; the conductivity of the conductive medium should not be less than 5μs/cm. If the medium accumulates in the measuring tube, it should be removed in time to avoid scratching the lining during removal. 4. The flow indication value of the E+H electromagnetic flowmeter does not match the actual value. Check whether the fluid in the sensor is full of the tube and whether there are bubbles. If there are bubbles, install an air eliminator upstream; check whether the grounding conditions are good and check the upstream of the flow meter. Is there a valve? If so, move it downstream or fully open it. Check whether the converter range setting is correct. If not, reset the correct range. 5. If the indication value of the E+H electromagnetic flowmeter fluctuates in a certain range, you need to check whether the environmental conditions have changed. If there are new interference sources and other magnetic sources or vibrations that affect the normal operation of the meter, the interference should be removed in time or the flow meter should be moved. bit; check the test signal cable, and use insulating tape to treat the ends so that the wires, inner shielding layer, outer shielding layer, and shell do not contact each other.
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