TE CONNECTIVITY SENSORS /// LM 12/2019
Page 1
LM
LIQUID LEVEL SENSOR
The LM series liquid level sensor incorporates stainless steel and
plastic isolation suitable for level sensing in water and other liquids.
The LM uses a patented low-cost stainless-steel sensor in a PVC
plastic fitting to measure liquid level based on the specific gravity of the
liquid and the height of the tank or container. The modular design is
adaptable to an infinite number of plastic port variations for OEM
applications. With high performance in a small form factor, the LM
Series enables the miniaturization of high accuracy pressure systems.
The standard output is 0.5-4.5V ratiometric with a 5V supply.
316L SS Pressure Sensor with PVC Threads
Small Profile
4.5V (typ) High Level Output
Gage, Absolute, Sealed Gage
ASIC Calibrated
Variety of Cable Lengths
Features
Threaded Process Fitting
-20ºC to +70ºC Operating Temperature
±1% Accuracy
±3.0% Total Error Band
Solid State Reliability
Variety of Cable Lengths
Applications
Irrigation
RV and Marine Holding Tank Level
Water Storage & Recycling Systems
Small Tank Fluid Level
Chillers & Evaporative Coolers
LM SERIES LIQUID LEVEL SENSOR
TE CONNECTIVITY SENSORS /// LM 12/2019
Page 2
STANDARD RANGES
Range (psi)
Range (Bar)
Gage
Absolute
Sealed Gage
0 to 1
0 to .07
0 to 2
0 to .20
0 to 5
0 to .35
0 to 15
0 to 1
0 to 30
0 to 2
0 to 50
0 to 5
0 to 100
0 to 7
0 to 150
0 to 10
Note: Intermediate pressure ranges available.
PERFORMANCE SPECIFICATIONS
Supply Voltage: 5.0Vdc
Ambient Temperature: 25°C (unless otherwise specified)
PARAMETERS
MIN
TYP
MAX
UNITS
NOTES
Zero Pressure Output
0.5
V
1, 2
Full Scale Output
4.5
V
1
Accuracy (combined linearity, hysteresis, & repeatability)
-1
+1
%Span
3
Total Error Band (includes calibration errors
above & temperature effects over the
compensated range)
-3
+3
%Span
Supply Voltage
4.75
5.00
5.25
V
Insulation Resistance (50Vdc)
50
MΩ
4
Pressure Overload
3X
Rated
5
Pressure Burst
4X
Rated
6
Compensated Temperature
0
40
ºC
Operating Temperature
-20
+70
ºC
Tightening Torque (recommended)
1~2 Turns from Finger Tight
7
Zero Offset Effect @ 1psiG from 90° Changes due to
Installation Orientation
0.6
%Span
8
Media, Pressure Port
Liquids and Gases compatible with PVC, 316/316L ST STL, Buna-N O-Ring
Notes
1. Ratiometric to supply voltage.
2. Measured at vacuum for Absolute (A), ambient for Gage (G) and Sealed Gage (S).
3. Best fit straight line.
4. Minimum from any wire to metal diaphragm.
5. The maximum pressure that can be applied without changing the transducer’s performance or accuracy
6. The maximum pressure that can be applied to a transducer without rupture of either the sensing element or transducer.
7. Over-torquing will damage the PVC fitting and will cause sensor calibration and/or zero offset to shift during installation.
Always check for a zero-offset shift after installing.
8. Zero offset effect is inversely ratiometric to pressure range, for 2psiG: 0.3% Span (typ); for 5psiG: 0.12% Span (typ).
Additional Notes
9. Standard gage units are not recommended for vacuum applications.
10. Direct mechanical contact with diaphragm is prohibited. Diaphragm surface must remain free of defects (scratches,
punctures, dents, fingerprints, etc.) for device to operate properly. Caution is advised when handling parts with exposed
diaphragms. Use protective cap whenever devices are not in use.
LM SERIES LIQUID LEVEL SENSOR
TE CONNECTIVITY SENSORS /// LM 12/2019
Page 3
DIMENSIONS
LM SERIES LIQUID LEVEL SENSOR
TE CONNECTIVITY SENSORS /// LM 12/2019
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ORDERING INFORMATION
LM
3
1
-
00000
F
-
100P
G
Model
Output
Signal
Connection Type
-
00000
Pressure
Port
-
Pressure
Range
Pressure
Type
LM
3* = 0.5 – 4.5V
Ratiometric
X = Special
Dim ‘L’ Cable
Inches [mm]
1 = 12 ± 0.25 [305 ± 6.4]
2 = 24 ± 0.5 [610 ± 12.7]
3 = 48 ± 1.0 [1219 ± 25.4]
4 = 84 ± 1.5 [2134 ± 38.1]
5 = 120 ± 1.5 [3048 ± 38.1]
6 = 180 ± 2.0 [4572 ± 50.8]
7 = 360 ± 2.0 [ 9144 ± 50.8]
-
00000
F = 1/2-14 NPT
X = Special
-
001P**
002P**
005P
015P
030P
050P
100P
150P
.07B**
.20B**
.35B
001B
002B
005B
007B
010B
G = Gage
A = Absolute
S = Sealed Gage
*Note: Ratiometric output span changes with input voltage. (See supply voltage specification)
**Note: 1psi (.07Bar) and 2psi (.20Bar) only available in Gage (G). (See standard rages)
NORTH AMERICA
Measurement Specialties, Inc.,
a TE Connectivity Company
Tel +1 800 522 6752
customercare.frmt@te.com
EUROPE
Measurement Specialties
(Europe), Ltd.,
a TE Connectivity Company
Phone: +31 73 624 6999
Email:
customercare.lcsb@te.com
ASIA
Measurement Specialties (China), Ltd.,
a TE Connectivity Company
Phone:
+86 0400-820-6015
Email:
customercare.shzn@te.com
TE.com/sensorsolutions
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