MTS位移传感器RHM系列外壳进油问题的处理 Oil entering in the electronics housing is very unusual because the RHM Sensor with any mating connector is IP67 protection and with integral cable has IP68 protection rating.

The cause for oil entering inside the cylinder may be due to the rod end damage from which the oil may enter inside the electronics or thrught the cable end side(if damaged or abused). 
 
 
One more reason may be the RHM sensor need to be fitted with o-ring on the sensor. If this is not there then in the oil may enter the sensor housing and if the sensor protective housing is pressurised then oil may enter the electronics. Please check whether you
have made sure to put the o-ring on the sensor i.e threaded part.

进入电子部件外壳的油是非常不寻常的，因为带有任何匹配连接器的RHM传感器是IP67保护，集成电缆具有IP68防护等级。

油进入气缸内的原因可能是由于杆端损坏，油可能从该端损坏进入电子器件内部或者电缆端侧（如果损坏或被滥用）。
 
还有一个原因可能是RHM传感器需要在传感器上安装O形圈。 如果不存在，则油可能进入传感器外壳，并且如果传感器保护外壳被加压，则油可能进入电子器件。 请检查您是否已确保将O形圈放在传感器上，即螺纹部分。