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The type 5 LLE series is the smallest of the range. It is a 10mm diameter sensor and is flange mounted . The sesnor is installed internally and uses a push fit. The Optical Liquid Level Sensor uses a photo-transistor trigger which provides a digital output that denotes the presence or absence of liquid. This series incorporates reverse polarity, over voltage, short circuit and transient protection. Features, Solid state technology, Small size , Digital output, Pre-wired , Electrically robust Benefits, Accurate repeatable switching point, Can be mounted in applications where space is limited , Microprocessor compatible, easy to install, saving assembly time. Typical Applications, Home appliances, Spa baths, Vending machines, food and beverage, medical, compressors, machine tools Go to Order Guide for detailed product listings. Specifications
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| Operation mode
| User defined single point on/off switch (Output is high in air)
| Repeatability (mm)
| ± 1
| Hysteresis (mm)
| 2 (dependent on liquid)
| Response time
| Rising liquid level – 50 µS
Falling Liquid level – 1 second max (in ethanol)
Response in other liquids dependent on viscosity
| Mechanical
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| Mounting
| Type 1 and 2 – mounted from outside; Type 3 and 5 – mounted from inside
| Termination
| 250 mm flying leads (180 mm for metal versions)
| Blue 0V
| Red +5V to +12V supply
| Green Output
| Material (Note 1)
| Polysulphone
| Dimensions
| Plastic
LLE101/102/103 Series
| Metal
LLE205/305
| Dome
| 3.5 mm radius (includes LLE 105 Series)
| Thread
| M12 x 1
| ½ in BSPT
| Hex
| 19 mm
| 24 mm (See mounting drawing)
| Environmental
| Standard Temperature
| High Temperature
| Operating temperature (°C)
| -25 to +80 (-13°F to +176°F)
| -40 to +125 (-40°F to +257°F)
| Storage temperature (°C)
| -30 to +85 (-22°F to +176°F)
| -40 to +80 (-40°F to +257°F)
| Thermal testing
| As per BS EN60068-2-33
| Humidity
| As per BS EN60068-2-30
| Vibration
| As per BS EN60068-2-6 Part S3: 1996
| Mechanical Shock
| As per BS EN60068-2-27 Part 2 Ea: 1987
| Pressure range (bar)
| 0 to 5 (plastic housing) (Note 2)
0 to 25 (metal housing)
| Ambient IR light limit
(@ 940nm) (Note 3)
| 10 mW/cm2 in operation
| Electrical
| Standard Temperature
| High Temperature
| Supply voltage (Vcc)
| +5Vdc to +12Vdc ± 5%
| Supply current (mA)
| 15mA nominal @ +5V
| 5mA nominal @ +5V
| Output sink current (Note 4)
@ 5Vdc
| @ 25 oC 10mA max
| @ 25 oC 40mA max
| @ 80 oC 3mA max
| @ 125 oC 7mA max
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Price £23.00 Plastic Versions Volume discounts available |
