Steam Pressure Transmitter Using FAQ Diagnostic Analysis

The pressure of the steam pressure transmitter goes up. If the output of the steam pressure sensor does not go to this kind of condition, check whether the pressure interface is leaking or blocked. If it is not confirmed, check the wiring method. If the wiring is correct, check the power supply again. If the power supply is normal, Then look at whether the sensor zero output, or simply pressurize to see if the output changes, there is a change to prove that the sensor is not damaged, if there is no change in the sensor that has been damaged. Other reasons for this may be damage to the instrument or other aspects of the entire system. Pressurized transmitter output does not change, and then the pressure transmitter output suddenly changes, the pressure transmitter zero can not go back. The reason for this phenomenon is most likely to be caused by the pressure sensor seal, generally because of the seal size specification (too soft or too thick). When the sensor is tightened, the seal is compressed into the sensor pressure port to block the sensor and pressurize it. When the pressure medium does not enter, but the pressure is great, suddenly open the seal ring, the pressure sensor is changed by the pressure, and when the pressure is reduced again, the sealing ring will return to plug the pressure port, and the residual pressure will not be released. The sensor zero can't come down again.

The instability of the output signal of the steam pressure transmitter may be due to the following reasons:

A. The pressure source itself is an unstable pressure B. The instrument or pressure sensor is not strong anti-interference ability C. The sensor wiring is not strong D. The sensor itself is very vibrating E. Sensor failure The transmitter is connected to the power No output possible Causes :

F. Connect the wrong line (inspect the instrument and sensor)

G. Open or short circuit of the wire itself H. No power output or mismatch of power supply I. Instrument damage or instrument mismatch J. Sensor damage The transmitter is inconsistent with the analog pressure gauge. First, deviation is normal. Second, Confirm normal deviation range steam pressure transmitter

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