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The OS4 industrial glass optical sensor is a single point liquid level switch that can operate in high pressure, high temperature, and aggressive environments due to its stainless steel and glass construction. This glass switch offers industrial supply voltages and outputs that can directly drive loads. The sensor can detect the presence or absence of almost any liquid, oil or water based, and can be configured to output a high or low signal in either a wet or dry state. Options for connecting to inductive loads or digital interfaces are also available. This single point liquid level switch can operate up to 8700 psi with housing threads suitable for external sensor mounting and for use in operating temperatures up to 125°C.

This industrial optical sensor is capable of driving high power loads and able to sink/source up to 1 amp. Designed for high power signaling of liquid presence/absence of liquid or operation at a high voltage, in high temperature and high pressure environments. Stainless steel, corrosion resistant housing and a glass sensing tip allow the sensor to be used in harsh chemical conditions.

This optical level sensor is compact in size, with a lack of moving parts, featuring transient over-voltage, short circuit protection, and is extremely accurate for point level detection in high-stress environments. Optical liquid sensors operate accurately in any size tank, and are designed with a very robust construction permitting use in a wide variety of demanding applications.


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For full product specifications and product number for ordering please visit this optical sensor here, on our float switch focused site