The OLS5 series is a liquid level sensor for single point level detection. The sensor has an infra-red emitter and detector aligned within an accurately shaped cone to give good optical coupling when the sensor is in air. This coupling is greatly reduced, when the sensor is immersed in liquid, as the infra-red light escapes through the liquid rather than being reflected back to the detector.

	Standard parts	Electrical connection	Material	Mount	Output	Thread
	OLS200D3SH	Fly lead	Polysulfone	External	High in air	M12
	OLS200D3LSH	Fly lead	Polysulfone	External	Low in air	M12
	OLS210D324-003	Fly lead	Polysulfone	External	High in air	M12
	OLS210D3L24-003	Fly lead	Polysulfone	External	Low in air	M12
	OLS210D3SH	Fly lead	Polysulfone	External	High in air	M12
	OLS210D3LSH	Fly lead	Polysulfone	External	Low in air	M12