The PD31 range of opto fluid level sensors has been extended to provide eight models. These sensors are designed to detect low viscosity fluids such as water and certain solvents. The sensor uses light refraction via an internal infrared transmitter and special optical lens arrangement to detect the presence of liquids.
The sensor can be used to send a signal to a controller or operate an alarm for control and process systems. Output can be selected with the model number and offers switched NPN or PNP. Supply voltage is 12-36Vdc and termination is via 2 metres of 3 core cable.
The sensor is manufactured from solid plastic with a 3/8in. or 1/2in. PF thread and has a HEX28 by 86mm long body.