LLE105000 Datasheet, PDF (1/4 Pages) Honeywell Solid State Electronics Center – Liquid level sensors

LLE Series
Liquid level sensors
DESCRIPTION
The enhanced series of liquid level sensors incorporates 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 photo-transistor 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
FEATURES
• Solid state technology
• Small size
• Digital output
• Pre-wired
• Electrically robust
ORDER GUIDE
Description
Screw In, M12 Thread, Plastic
Push In, Plastic
Screw In, ½ in, Metal
(Type 1)
(Type 2)
(Type 3)
(Type 5)
Nickel plated brass
Stainless steel
the dome to the photo-transistor. When liquid covers the
dome, 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 photo-
transistor is reduced and the output switches, indicating the
presence of liquid. This method of liquid level sensing is very
fast, and almost instantaneous for water.
BENEFITS
• Accurate, repeatable switching point
• Can be mounted in applications where space is limited
• Microprocessor compatible
• Easy to install, saving assembly time
• Reverse polarity, over voltage, short circuit and transient
protection
TYPICAL APPLICATIONS
• Home appliances
• Spa baths
• Vending machines
• Food and beverage
• Medical
• Compressors
• Machine tools
• Automotive
Catalogue Listing
Standard temperature
High temperature
LLE101000
LLE101101
LLE102000
LLE102101
LLE103000
LLE103101
LLE105000
LLE105100
LLE205000
LLE205100
LLE305000
LLE305100