1. Zero check (zero calibration)

 

Zero point drift is a problem often encountered in actual operation of Coriolis mass flowmeters: there are many factors that cause zero point drift, such as the installation stress of the sensor, the structural asymmetry of the measuring tube, and the change of the physical characteristics of the measured fluid. Especially in the small flow measurement, the zero drift has a serious impact on the measurement accuracy. Therefore, it is very necessary to periodically check and adjust the zero point.

Zero point inspection should be carried out at least once every three months. When production permits, for Coriolis mass flow meters installed at important monitoring points, the zero point inspection interval should be appropriately shortened. Whether the zero calibration is intact is the key that directly affects whether the flowmeter is operating within the accuracy range.

 

2. Check of working parameters

 

During the use of the flowmeter, you should always pay attention to whether the set working parameters have changed, whether the displayed flow, density, and temperature values ​​are normal. If there is a big difference with the actual situation, you can follow the method described in the instruction manual. Perform zero flow calibration again. If you still feel abnormal after the above work is completed, you should check whether the working parameters set in the transmitter are correct.

 

3. Regularly observe the fault indication of the flowmeter

 

Depending on the model, specification, and manufacturer of the flowmeter, the fault display method and content are also different. For different fault alarm indications, you can check the product manual to determine the cause of the fault and deal with it.