potentiometer displacement sensor data logger POTENTIOMETER A hybrid track potentiometer features a high wiper contact resistance, therefore operational checks should be carried out only in the voltage divider mode. A Hybrid track potentiometer should be used only as a voltage divider, with a minimum wiper circuit impedance of 100 x track resistance or 0.5M (whichever is greater). Operation with wiper circuits of lower impedance will degrade the output smoothness and affect the linearity. For variable resistor applications, only a Penny & Giles wirewound potentiometer should be used. Penny+Giles SLS 220 linear displacement sensors have a 10mm or 20mm stroke range with spring loaded operation, a mounting flange to allow easy installation and are contained within a high strength Nylatron® housing which provides good chemical resistance and low weight. The internal potentiometer assembly is protected to IP66. Suited to OEM and process monitoring applications, this new sensor replaces Penny+Giles HLP 220 model.