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Core Tip: The mass flowmeter quality problems are generally guaranteed, but there will be failure, we do not worry, careful analysis of the reasons will be able to solve, the following is a simple description of the instrument meter world network mass flowmeter failure and processing method.
Mass flow meter troubleshooting Mass flow meter quality problems are generally guaranteed, but there will be failure, we do not worry, careful analysis of the reasons will be able to solve, the following is a simple introduction to the instrument meter world network mass flow meter Faults and treatment methods.
1. If the error of the hardware is too large, the integrator displays no light or no increment, and the display is blank. The reason is as follows:
a. The installation is not standardized, which can directly lead to zero drift of the flowmeter. For example, the mass flowmeter is installed close to the pump outlet, the sensor support strength is not enough, and the connection flange is improperly welded to generate stress signals, and the cable is subject to electromagnetic interference.
b. Wiring problem If the monitor does not light up, check the connection of the integrator power supply. If the fuse is burned, confirm that the input voltage and the standard voltage are in the same nominal value. If the totalizer does not increase with the flow rate, the integrator wiring should be checked. If the integrator is equipped with a positive/reverse program, check the flowmeter wiring. Because the flowmeter is incorrectly wired, the integrator will be in reverse. Do not increment when streaming.
c. Change of process media If the measurement medium experiences gas, gasification, or two-phase flow, the transmitter will display an alarm. In severe cases, the sensor will stop working.
d. Transmitter failure.
e. Sensor failure.
f. Pipe purge problem.
2. Software issues For the just-checked flow meter, it must pay attention to the zero calibration under the current working condition before it is installed and used. It must be ensured that the flow meter is filled with medium and the two-end shut-off valve can be closed to zero calibration. There are many specific methods. Kind, panel operation, Communicator, and using ProLink II software.
a. Zero calibration error.
b. The parameter is set incorrectly.
c. Power pulse fluctuations.
d. I/O configuration is wrong (must pay attention to range).
e. Operation is wrong.
The above is just some personal views on the maintenance of mass flowmeters. If there are inadequacies, we hope everyone will bear in mind.
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