How to solve the hardware failure of gas mass flowmeter

How to solve the hardware failure of gas mass flowmeter? If the error is too large, the display of the totalizer is not bright or the value is not increased, and the display is blank, the reasons are: a. The installation is not standardized, which can directly lead to the zero drift of the flowmeter. For example, the mass flowmeter is installed near the pump outlet. , The support strength of the sensor is not enough, the improper welding of the connecting flange produces a stress signal, and the cable is subject to electromagnetic interference. b. Wiring problem If the display of the gas mass flowmeter does not light up, check the power connection of the totalizer. If the fuse is burned, confirm whether the input voltage is consistent with the nominal value of the standard voltage, and whether the AC or DC form is consistent. And if the totalizer does not increase with the flow rate, check the wiring of the totalizer. If the totalizer is equipped with a forward/reverse program, check the wiring of the flowmeter. Does not increment when flowing. c. If the process medium changes, if the measurement medium has gas inclusion, gasification or two-phase flow, the transmitter will display an alarm, and if it is serious, the sensor will stop working. d. Transmitter failure. e. Sensor failure. f. Pipeline purging problem. Troubleshooting of mass flowmeter due to software problems——For the flowmeter that has just been calibrated, attention must be paid to the zero point calibration under the current working condition before installation and use. It is necessary to ensure that the flowmeter is filled with medium and then close the stop valves at both ends to calibrate the zero point. There are many specific methods, such as panel operation, hand operator and prolink II software.

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