Bearing Test Machine the measured sensor surface

Bearing Test Machine the measured sensor surface,the sensor measured surface roughness feelings through the built-sharp stylus,this the measured surface roughness of the workpiece caused by  contact angle measurement the stylus is displaced, the displacement amount sensor inductance coil inductance changes,and the measured surface roughness to generate an analog signal proportional to the output of the  mechanical spindle  phase-sensitive rectifier, which signal through after amplification and level shifting into the data acquisition system, DSP chip data acquisition digital filtering and parameter calculation, measurement results on the LCD readout can also be output on the printer, you can also communicate with the PC.