Contamination of the polished stator, shutter, or sense electrode can result in unwanted surface
charges that induce offset errors in the electric field measurement.
Three Teflon insulators electrically insulate the high-impedance sense electrode from the motor
assembly base plate. Surface contamination of these insulators can result in excessive leakage
current. The CS110 includes a circuit to compensate for input leakage current on the charge
amplifier up to ± 4.2 nA. Leakage current values in excess of ±4.2 nA can cause measurement
errors and are indicated by status code 11.
CS110 Electric Field Meter 30
To Next Page
Loading...
