LLE Series
Liquid level sensors
DESCRIPTION
The enhanced series of liquid level sensors incorporates a
the dome to the photo-transistor. When liquid covers the
photo-transistor trigger which provides a digital output that
dome, the effective refractive index at the dome-liquid
denotes the presence or absence of liquid.
boundary changes, allowing some light from the LED to
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
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 for water.
FEATURES
BENEFITS
• Solid state technology
• Accurate, repeatable switching point
• Small size
• Can be mounted in applications where space is limited
• Digital output
• Microprocessor compatible
• Pre-wired
• Easy to install, saving assembly time
• Electrically robust
• 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
ORDER GUIDE
Catalogue Listing
Description
(Type 1)
Screw In, M12 Thread, Plastic
Standard temperature
High temperature
LLE101000
LLE101101
(Type 2)
LLE102000
LLE102101
(Type 3)
LLE103000
LLE103101
Push In, Plastic
(Type 5)
LLE105000
LLE105100
Screw In, ½ in, Metal
Nickel plated brass
LLE205000
LLE205100
Stainless steel
LLE305000
LLE305100
LLE Series
TECHNICAL INFORMATION
Specifications
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 s max (in ethanol)
Response in other liquids dependent on viscosity
Mechanical
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)
Material [Note 1]
Blue
0V
Red
+5 V to +12 V supply
Green
Output
Polysulphone
Plastic
Dimensions
Metal
LLE101/102/103 Series
Dome
LLE205/305 Series
3,5 mm radius (includes LLE105 Series)
Thread
M12x1
½ in BSPT
Hex
19 mm
24 mm (See mounting drawings on page 3)
Envir
onmental
Environmental
Standar
d temperatur
e
tandard
temperature
High temperatur
e
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 185 °F)
-40 to 125 (-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)
10 mW/cm2 in operation
Ambient IR light limit (@ 940 nm) [Note 3]
Electrical
Standar
d temperatur
e
tandard
temperature
Supply voltage (Vcc)
High temperatur
e
temperature
+5 Vdc to +12 Vdc ± 5 %
Supply current (mA)
15 mA nominal @ +5 Vdc
5 mA nominal @ +5 Vdc
Output sink current [Note 4]
@ 25 °C 10 mA max.
@ 25 °C 40 mA max.
@ 5 Vdc supply
@ 80 °C 3 mA max.
@ 125 °C 7 mA max.
Notes:
[Note 1] Material compatibility information available on request.
[Note 2] Threaded sensors only.
[Note 3] For other ambient light environments the user should test the sensor under application conditions to verify compatibility.
[Note 4] The output is intended as a TTL compatible output signal, for interfacing to logic systems. For interfacing with other types of circuitry an appropriate buffer circuit
must be used.
2
www.honeywell.com/sensing
Liquid level sensors
MOUNTING DRAWING (IN MM AND INCHES)
LLE101000/LLE101101
(Type 1)
LLE102000/LLE102101
(Type 2)
22,49
(0.89)
"L"
19,40
(0.76)
12,45
(0.49)
M12 x 1 - 8 g
M12 x 1 - 8 g
19,00
(0.75)
12,40
(0.49)
10,25
(0.40)
19,00
(0.75)
4,70
(0.19)
4,70
(0.19)
(0.01 in 2 )
0,22 mm 2
Tinned Ends
0,22 mm2
(0.01 in2)
Tinned Ends
Notes
1 Recommended panel hole size Ø 12,5
±0.3 mm (0.49 ±0.01 in)
2 ‘O’ ring seal supplied Unassembled
LLE103000/LLE103101
(Type 3)
LLE105000/LLE105100
(Type 5)
"L"
+0.004
(0.39 -0
19,00
(0.75)
7,20
(0.28)
2,70
(0.11)
Ø10,00
)
+0,10
-0
16,12
(0.63)
2,3
(0.09)
10,30
(0.41)
0,22 mm2
(0.01 in2)
Tinned Ends
4,1
(0.16)
M12 x 1 - 8 g
(0.01 in 2 ) 0,22 mm 2
Tinned Ends
13,0
(0.51)
ELECTRICAL DIAGRAM
LLE205000/LLE205100
LLE305000/LLE305100
y
;
Vcc
RED
Cable length
12,3
(0.49)
16,00
(0.63)
24,00
(0.94)
VOLTAGE
REGULATOR
Ø 14,5
0.57
0,22 mm2 (0.01 in2)
Tinned Ends
Thread 1/2" BSP
16,5
(0.65)
45,4
(1.79)
24,00
(0.94)
IRED
OUTPUT
GREEN
SCHMITT
TRIGGER
PHOTO
TRANSISTOR
0V
BLUE
Honeywell Sensing and Control
3
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this
product sheet is for reference only.
Do not use this document as a
product installation guide.
• Complete installation, operation, and
maintenance information is provided
in the instructions supplied with each
product.
Failure to comply with these
instructions could result in death or
serious injury.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety
or emergency stop devices or in any
other application where failure of the
product could result in personal injury.
Failure to comply with these
instructions could result in death or
serious injury.
WARRANTY/REMEDY
SALES AND SERVICE
Honeywell warrants goods of its
manufacture as being free of defective
materials and faulty workmanship.
Honeywell’s standard product warranty
applies unless agreed to otherwise by
Honeywell in writing; please refer to
your order acknowledgement or consult
your local sales office for specific
warranty details. If warranted goods are
returned to Honeywell during the period
of coverage, Honeywell will repair or
replace, at its option, without charge
those items it finds defective. The
for
egoing is buyer
emedy and
foregoing
buyer’’s sole rremedy
is in lieu of all war
ranties,
essed
warranties, expr
expressed
or implied, including those of
mer
chantability and fitness for a
merchantability
par
ticular purpose. In no event shall
particular
Honeywell be liable for
consequential, special, or indir
ect
indirect
damages.
While we provide application
assistance personally, through our
literature and the Honeywell web site, it
is up to the customer to determine the
suitability of the product in the
application.
Specifications may change without
notice. The information we supply is
believed to be accurate and reliable as
of this printing. However, we assume no
Honeywell serves its customers through
a worldwide network of sales offices,
representatives and distributors. For
application assistance, current
specifications, pricing or name of the
nearest Authorized Distributor, contact
your local sales office or:
responsibility for its use.
Automation and Control Solutions
Sensing and Control
Honeywell
Newhouse Industrial Estate
Motherwell, ML1 5SB, UK
www.honeywell.com
100437-EN UK07 GLO
Issue 3 June 2005
Copyright 2001-2005 Honeywell International Inc.
E-mail: info.sc@honeywell.com
Inter
net: www.honeywell.com/sensing
Internet:
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