... +30Vdc; 2. Current output: 4 ~ 20mA YD9800 Split Type proximity detector can measure the relative position of the measured object (must ... fault diagnosis of displacement, vibration, rotational speed, the oil film thickness of the steam turbine, hydraulic turbine, generators, blowers, compressors, ... 12mA ( not including the output current ) YD9800 Split Type Proximity Detector Sensor for displacement