Pressure transmitter signal unstable common reason and solution

The reason of unstable signal has the following A. Pressure source itself is an unstable pressure B. Instrument or pressure sensor anti-interference ability is not strong C. Sensor wiring rickety D. The vibration sensor itself is very severe E. Measured pressure sensor solutions: 1, add to, but the pressure transmitter output signal is weak: first, should check whether the pressure transmitter with interface is a flat or clogged, if confirmed not to check the connection mode of pressure transmitter, such as wiring and correct check the power supply, such as power supply is normal to see if there are any more output pressure sensor is zero, or a simple pressure to see if the output change, change that pressure transmitter no damage, no change if the sensor is damaged. Other reasons for this is the case also is likely to be damaged, or other aspects of the whole system. 2 output does not change, pressure transmitter, pressure transmitter output changes suddenly, pressure transmitter zero return not to go. Most likely the cause of this phenomenon is sealing ring caused by the pressure sensor, generally because seal specifications ( Too soft or too thick) , tighten the pressure transmitter, the sealing ring is compressed to sensor pressure inside the mouth blockage sensors, pressure pressure medium into not to go, but a lot of pressure when suddenly flung wide sealing ring, pressure sensor and change of stress, and stress down again, the seal and return plug pressure, residual pressure release out, so the sensor zero come down again. Rule out the reason for this is the best way to remove the sensor, direct look at zero is normal, if the normal replacement of sealing ring to try again. 有几个原因不稳定。 一个。 压力源本身是一个不稳定的压力。 B。 仪器或压力传感器不足以抵抗干扰。 C。 传感器接线还不够快。 D。 传感器本身是很活跃的。 E. 传感器failureResolvent: 1。 添加测量压力,但压力变送器的输出信号是不会了。 检查压力变送器的压力接口是否泄漏或阻塞,如果证实。 检查压力变送器的连接模式,如接线错误。 检查电源,如正常供电。 检查压力传感器是否零输出,或者只是增压是否输出变化,变化证明压力变送器不损坏,如果没有改变传感器已经损坏。 其他原因可能是仪器损坏,或其他方面的系统作为一个整体。 2. 压力变送器的输出保持不变,然后突然压力变送器的输出变化,所以减压发射机的零位置可以不退还。 这种现象很可能造成的压力传感器密封圈,通常由于密封圈的规格( 太软或太厚) 压力变送器收紧,密封圈压缩成传感器入口堵塞传感器,压力介质不能进去,但压力很高,突然爆开的密封圈,改变压力传感器,压力,当压力降低,密封圈返回塞进气孔,和剩余压力不能被释放,所以传感器零位不下来。 消除这种最好的办法是删除传感器并检查直接零位是否正常。 如果密封圈更换正确,再试一次。