What to do if the error of the gas mass flowmeter hardware is too large

The volume of fluid is a function of fluid temperature and pressure, and is a dependent variable, while the quality of fluid is a quantity that does not change with time, space temperature, and pressure. As mentioned above, the flow measurement values ​​of commonly used flowmeters, such as orifice flowmeters, turbine flowmeters, vortex flowmeters, electromagnetic flowmeters, rotor flowmeters, ultrasonic flowmeters and oval gear flowmeters, are fluid volume flow. The quantity of fluid involved in activities such as science, production process control, quality management, economic accounting and custody transfer is generally mostly quality. Measuring only the volumetric flow rate of the fluid by using the above-mentioned flowmeter often cannot meet people's requirements, and it is usually necessary to try to obtain the mass flow rate of the fluid. In the past, the quality of the fluid could only be determined indirectly through methods such as correction, conversion, and compensation after measuring the temperature, pressure, density, and volume of the fluid. If the error of the gas mass flowmeter hardware is too large, the display of the totalizer is not bright or does not add value, 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. 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 problems If the display of the gas mass flowmeter does not light up, check the power 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. 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. The transmitter fails. e. Sensor failure. f. Pipeline purging problem. Troubleshooting of software problems mass flowmeter——For the flowmeter that has just been calibrated, pay attention to the zero point calibration under the current working condition before installation and use. Make sure 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, panel operation, manual The manipulator and the use of prolink Ⅱ software.

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