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LMES025U Datasheet(PDF) 2 Page - Sensortechnics GmbH

Part No. LMES025U
Description  digital low differential pressure sensors
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Maker  SENSORTECHNICS [Sensortechnics GmbH]
Homepage  http://www.sensortechnics.com
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LMES025U Datasheet(HTML) 2 Page - Sensortechnics GmbH

 
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E / 11822 / C
LME series – digital low differential pressure sensors
Page 2/12
Subject to change without notice
www.first-sensor.com
contact@first-sensor.com
Part no.
Operating pressure
Proof pressure (3)
Burst pressure (3)
LMES025U...
0...25 Pa / 0...0.25 mbar (0.1 inH
2O)
2 bar
(30 psi)
5 bar
(75 psi)
LMES050U...
0...50 Pa / 0...0.5 mbar (0.2 inH
2O)
LMES100U...
0...100 Pa / 0...1 mbar (0.4 inH
2O)
LMES250U...
0...250 Pa / 0...2.5 mbar (1 inH
2O)
LMES500U...
0...500 Pa / 0...5 mbar (2 inH
2O)
LMES025B...
0...±25 Pa / 0...±0.25 mbar (0.1 inH
2O)
LMES050B...
0...±50 Pa / 0...±0.5 mbar (0.2 inH
2O)
LMES100B...
0...±100 Pa / 0...±1 mbar (0.4 inH
2O)
LMES250B...
0...±250 Pa / 0...±2.5 mbar (1 inH
2O)
LMES500B...
0...±500 Pa / 0...±5 mbar (2 inH
2O)
Specification notes
(1) Sweep 20 to 2000 Hz, 8 min, 4 cycles per axis, MIL-STD-883, Method 2007.
(2) 5 shocks, 3 axes, MIL-STD-883E, Method 2002.4.
(3) The max. common mode pressure is 5 bar.
(4) For example with a LMES500... sensor measuring CO
2 gas, at full-scale output
the actual pressure will be:
ΔP
eff = ΔPSensor x gas correction factor = 500 Pa x 0.56 = 280 Pa
ΔP
eff = True differential pressure,
ΔP
Sensor= Differential pressure as indicated by output signal
Pressure sensor characteristics
Parameter
Min.
Max.
Unit
Supply voltage V
S
4.75
5.25
V
DC
Output current
1
mA
Lead specifications
Average preheating temperature gradient
2.5
K/s
Soak time
ca. 3
min
Time above 217 °C
50
s
Time above 230 °C
40
s
Time above 250 °C
15
s
Peak temperature
260
°C
Cooling temperature gradient
-3.5
K/s
Temperature ranges
Compensated
0
+70
°C
Operating
-20
+80
°C
Storage
-40
+80
°C
Humidity limits (non-condensing)
97
%RH
Vibration (1)
20
g
Mechanical shock (2)
500
g
Maximum ratings
Gas type
Correction factor
Dry air
1.0
Oxygen (O
2)
1.07
Nitrogen (N
2)
0.97
Argon (Ar)
0.98
Carbon dioxide (CO
2)
0.56
Gas correction factors (4)


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