Optical Liquid Level Sensors

PST offer a wide range of optical liquid level switches that are solid state, so there are no unreliable moving parts. They are compact, only protrude a small distance into the application and are able to detect small amounts of liquid. Read More

The intelligent liquid level sensors have low sensitivity to ambient light and are not affected by foam when in air, or small bubbles when in liquid.Their ability to survive in wide operating temperatures and harsh liquid media for long periods of time result in a very robust switch.

If our standard range of optical liquid level switches do not meet your requirements, housings, cabling and connectors can be customised to suit your application needs. We can also incorporate built-in features like PWM outputs and insensitivity to moving liquids.

Our wide range of level sensors are suitable for applications with restricted space, that require a low power and low cost sensing solution.