LLE105000

The LLE105000 is a Fiber Optics and Liquid Level Sensor with polysulfone type 5 housing. The LLE series of enhanced liquid level sensor uses a photo-transistor trigger which provides a digital output that denotes the presence or absence of liquid. The mode of operation is derived from the principle of total internal reflection. An LED and phototransistor are housed within a plastic dome at the head of the device. When no liquid is present, light from the LED is internally reflected from the dome to the phototransistor. When liquid covers the done, the effective refractive index at the dome liquid boundary changes, allowing some light from the LED to escape. Thus the amount of light received by the phototransistor is reduced and the output switches, indicating the presence of liquid. This method of liquid level sensing is very fast and almost instantaneous in water.

• High in air output type
• Solid state reliability - No moving parts
• Miniature size
• Microprocessor compatible
• Fast response
• Polysulfone sensor housing suitable for hygiene applications

Applications

Sensing & Instrumentation, Automotive, Consumer Electronics