Failure analysis of vortex flowmeter

1. The instrument ground wire does not meet the specification requirements of vortex flowmeter supplier, so that the 50Hz interference in the strong power supply will enter. When the normal signal is higher than 50Hz, the normal signal will be output; otherwise, the wrong signal will be output.

2. The pressure line in the wiring process of the instrument is not solid, which leads to the intermittent signal in the transmission process.

3. Because of high temperature and high humidity in coke oven gas, water will exist in the process of gas transportation. The gas flow causes water to fluctuate back and forth, creating a ripple flow. When the vortex flow sensor is in this fluid state, the output data is large or small, which cannot be reflected at all

Production status.

4. Because the coke oven gas has many impurities and is easy to crystallize, the impurities coagulate in the sensing head, resulting in measurement error. When the temperature rises, the impurities volatilize, the sensitivity increases, the signal enhancement; Instead, it goes down. This leads to data instability.

5.Vortex flowmeter is not suitable for installation in strong vibration occasions is widely known as carriers, but in the case of magnetic field changes frequently, vortex flow sensor can measure the signal output of higher than normal. It is proved by practice that in the field without gas flow, when the vortex flow sensor is in Change of magnetic field at the instant of the magnetic field changes, vortex flow sensor can sense if a wrong signal and output, when change over, instrument in a steady magnetic field, the instrument will output a normal signal.