Reasons for wear of the piston rod displacement probe
Thread Content
I have a circulating hydrogen reciprocating machine; the piston rod displacement sensor is worn out. The intake pressure is 12 MPa, and the exhaust pressure is 13.9 MPa. It operates in a two-column symmetric balance configuration. The gap between the piston rod displacement probe and the piston rod is 1.15 mm in the southern row, and 1.0 mm in the northern row. After stopping today, I used a motor to turn the shaft; a dial indicator was placed at the probe for measuring the displacement of the piston rod. The fluctuation of the piston rod from the inner stop to the outer stop was 0.17 mm. Additionally, how is the gap between the piston rod displacement probe and the piston rod determined?
Specifically, it must be within the linear measurement range of the sensor.
This depends on the detection range of the probe itself; the gap is determined by the manufacturer, and the user mainly monitors any changes in that gap