How to deal with the hardware failure of gas mass flowmeter?

The gas mass flowmeter cannot control the flow, it can only detect the mass flow of liquid or gas, and output the flow value through analog voltage, current or serial communication. Gas mass flowmeters are suitable for a variety of media. High measurement accuracy. The requirements for installing straight pipe sections are low. No moving parts, long-term stability, simple structure and easy installation and maintenance. Good reliability. Low maintenance rate. The pressure loss is small, and the range of the mass flow meter is wide, and the range is 10-25. The mass flowmeter can realize disassembly and assembly of the sensor without continuous flow, and can realize the separation of the amplifier and the sensor (separation distance 15m). It can query the measurement data within ten years, with output and communication functions. The gas mass flowmeter is easy to install and has a small amount of construction, especially the plug-in type. With its own ball valve, the mass flow meter can be installed online for some media, and the calibration and maintenance are convenient. In the application of gas mass flowmeters, we occasionally encounter hardware failures. How should we deal with them? Knowing the following content, you can easily deal with them. If the error is too large, the display of the totalizer is not bright or does not add value, and the display is blank, the reasons are: (1) The installation is not standardized, which can directly lead to the zero drift of the flowmeter. For example, the mass flowmeter is installed at the outlet of the pump. Recently, 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. (2) Wiring problem If the display of the gas mass flowmeter does not light up, check the power supply connection of the totalizer. If the fuse is burned, you should 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. (3) The transmitter fails. (4) The sensor fails. (5) Pipeline purging problem. (6) If the process medium changes, if the measurement medium has gas inclusion, gasification or two-phase flow, the transmitter will display an alarm, and the sensor will stop working if it is serious. It is not enough for us to master the fault handling skills of the gas mass flowmeter. It is important to maintain it carefully so as not to affect its normal work, and to a certain extent, it can also extend the service life of the equipment. When cleaning the gas mass flowmeter, use a soft cotton cloth to wipe off the surface stains. During the wiping process, be careful not to use too much force to prevent the instrument from breaking. For disinfection, alcohol is usually used for disinfection, and alcohol can also remove dust on the surface to a certain extent.

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