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LMI - Digital Low Diff Pressure Sensors

First Sensor

First Sensor LMI

The LMI differential low-pressure sensors are based on thermal flow measurement of gas through a micro-flow channel integrated within the sensor chip.

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Datasheet |
Digital Datasheet|

Product Features

Operating Temperature Range : -20 – 80 °C [ -4 – 176 °F ]
Pressure (mmHG): 9, 2.62, 18.75, 7.5, 1.87, 3.75, .375, 9.37, 37.5, .75, .187
Product Height : 8.9 mm [ .35 in ]
Pressure (bar): .025, .003, .05, .005, .001, .01, .012, 0, .002
Pressure (psi): .036, .362, .014, .003, .05, .174, .072, .145, .007, .725, .181, .07
Supply Voltage Range (V): 2.7 – 3.6

Available from

Product	TE Part #	Documents	Pressure	Pressure Sensor Type	Pressure	Pressure	Sensor Options	EU RoHS Compliance	EU ELV Compliance
LMIS500UB3S; PRES;0...500Pa;I2C;3V	1010392-F	3D PDF	-	-	Digital Pressure Sensor	3.75 mmHG	.005 bar	No Option	-	-
LMIM012UB3S; PRES;0...12mbar;I2C;3Vs	1010380-F	3D PDF	-	-	Digital Pressure Sensor	9 mmHG	.012 bar	No Option	-	-
LMIS025BB3S; PRES; 25Pa;I2C;3Vs	1010383-F	3D PDF	-	-	Digital Pressure and Altimeter Sensor Modules	.187 mmHG	0 bar	Short Tube	-	-
LMIS100UB3S; PRES;0...100Pa;I2C;3V	1010388-F	3D PDF	-	-	Digital Pressure Sensor	.75 mmHG	.001 bar	No Option	-	-
LMIM050UB3S; PRES; 5000Pa;I2C;3Vs	20020628-00	3D PDF	-	-	Digital Pressure Sensor	37.5 mmHG	.05 bar	No Option	-	-
LMIS100BB3S; PRES; 100Pa;I2C;3Vs	1010387-F	3D PDF	-	-	Digital Pressure and Altimeter Sensor Modules	.75 mmHG	.001 bar	Short Tube	-	-
LMIM050BB3S; PRES; 5000Pa;I2C;3Vs	1014304-F		-	-	Digital Pressure Sensor	37.5 mmHG	.05 bar	No Option	-	-
LMIM012BB3S; PRES; 12mbar;I2C;3Vs	1010379-F		-	-	Digital Pressure and Altimeter Sensor Modules	9.37 mmHG	.012 bar	Short Tube	-	-
LMIS025UB3S; PRES;0...25Pa;I2C;3Vs	1010384-F	3D PDF	-	-	Digital Pressure Sensor	.187 mmHG	-	-	No Option	-	-
LMIM025BB3S; PRES; 2500Pa;I2C;3Vs	1010381-F	3D PDF	-	-	Digital Pressure Sensor	18.75 mmHG	.025 bar	No Option	-	-
LMIS350UB3S; PRES;0...350Pa;I2C;3V	1011435-F	3D PDF	-	-	Digital Pressure Sensor	2.62 mmHG	.003 bar	No Option	-	-
LMIS500BB3S; PRES; 500Pa;I2C;3Vs	1010391-F	3D PDF	-	-	Digital Pressure and Altimeter Sensor Modules	3.75 mmHG	.005 bar	Short Tube	-	-
LMIM025UB3S; PRES;0...2500Pa;I2C;3Vs	1010382-F	3D PDF	-	-	Digital Pressure and Altimeter Sensor Modules	18.75 mmHG	.025 bar	Short Tube	-	-
LMIS050UB3S; PRES;0...50Pa;I2C;3V	1010386-F	3D PDF	-	-	Digital Pressure and Altimeter Sensor Modules	.375 mmHG	0 bar	Short Tube	-	-
LMIS250BB3S; PRES; 250Pa;I2C;3Vs	1010389-F	3D PDF	-	-	Digital Pressure and Altimeter Sensor Modules	1.87 mmHG	.002 bar	Short Tube	-	-
LMIS050BB3S; PRES; 50Pa;I2C;3Vs	1010385-F	3D PDF	-	-	Digital Pressure Sensor	.375 mmHG	-	-	No Option	-	-
LMIM010BB3S; PRES; 10mbar;I2C;3Vs	1010377-F	3D PDF	-	-	Digital Pressure Sensor	7.5 mmHG	.01 bar	No Option	-	-
LMIM010UB3S; PRES;0...10mbar;I2C;3Vs	1010378-F	3D PDF	-	-	Digital Pressure Sensor	7.5 mmHG	.01 bar	No Option	-	-

Overview

The innovative LMI technology features superior sensitivity especially for ultra-low pressures. The extremely low gas flow through the sensor ensures high immunity to dust contamination and long tubing compared to other flow-based pressure sensors.

Benefits

Ultra-low pressure ranges from 25 to 5000 Pa (0.1 to 10 inH2O)
Pressure sensor based on thermal micro- flow measurement
High flow impedance
Very low flow-through leakage
High immunity to dust
No loss in sensitivity using long tubing
Outstanding long-term stability and precision with real-time offset compensation and linearization techniques
Total accuracy better than 0.5% FS typical
On-chip temperature sensor
Two user-driven modes of operation
Low power mode (400 µA standby current)
Continuous mode (5 ms sampling time)
Ideal for battery-operated applications
Linearized digital I²C output with 16 bit sigma-delta A/D conversion
Small footprint, low profile, only 9 mm in height, and robust package
Pressure ports for direct manifold assemblies
Highly versatile to fit to application-specific mounting adaptors and manifolds
Minimized internal volume and manifold mount option allow for fast gas purge time
No position sensitivity

Applications

Industrial

HVAC
VAV
Filter monitoring
Burner control
Fuel cells
Gas leak detection
Fume hood
Instrumentation
Security systems

Medical

Ventilators
Spirometers
CPAP
Sleep diagnostic equipment
Nebulizers
Oxygen conservers/concentrators
Insufflators/endoscopy

White Paper

Trust and Reliability For In-Home Medical Sensors (English)

White Paper

Making HVAC Systems More Efficient and Reliable with Sensors (English)

Solution Guide

Sensors for CPAP Machines (English)

Features

Please review product documents or contact us for the latest agency approval information.

Product Type Features

Pressure Type Differential
Sensor Package 8 pin SMD
Pressure Sensor Type Digital Pressure Sensor, Digital Pressure and Altimeter Sensor Modules
Leg Style SMD Pads

Electrical Characteristics

Supply Voltage Range (V) 2.7 – 3.6

Dimensions

Product Height 8.9 mm [ .35 in ]
Product Width 11.2 mm [ .44 in ]
Product Length 17.6 mm [ .692 in ]

Usage Conditions

Operating Temperature Range -20 – 80 °C [ -4 – 176 °F ]

Operation/Application

Pressure (mmHG) .187, .375, .75, 1.87, 2.62, 3.75, 7.5, 9, 9.37, 18.75, 37.5
Pressure (bar) 0, .001, .002, .003, .005, .01, .012, .025, .05
Pressure (psi) .003, .007, .014, .036, .05, .07, .072, .145, .174, .181, .362, .725
Proof Pressure Range 2 bar
Pressure (inH2O) .1, .2, .401, 1, 1.4, 2, 4.01, 4.82, 5.02, 10, 10.04, 20.09
Output Interface I²C
Pressure Accuracy ± 0.5% F.S

Packaging Features

Sensor Port Configuration Dual Sideport, Dual Horizontal

Other

Sensor Options No Option, Short Tube

Reference Number

TE Internal Number CAT-BLPS0082

Related Materials

Datasheets & Catalog Pages

LMI Series - Digital Low Differential Pressure Sensors pdf English

LMI - Digital Low Diff Pressure Sensors

Product Features

Operating Temperature Range : -20 – 80 °C [ -4 – 176 °F ]

Pressure (mmHG): 9, 2.62, 18.75, 7.5, 1.87, 3.75, .375, 9.37, 37.5, .75, .187

Product Height : 8.9 mm [ .35 in ]

Pressure (bar): .025, .003, .05, .005, .001, .01, .012, 0, .002

Pressure (psi): .036, .362, .014, .003, .05, .174, .072, .145, .007, .725, .181, .07

Supply Voltage Range (V): 2.7 – 3.6

Benefits

Applications

Product Type Features

Pressure Type Differential

Sensor Package 8 pin SMD

Pressure Sensor Type Digital Pressure Sensor, Digital Pressure and Altimeter Sensor Modules

Leg Style SMD Pads

Electrical Characteristics

Supply Voltage Range (V) 2.7 – 3.6

Dimensions

Product Height 8.9 mm [ .35 in ]

Product Width 11.2 mm [ .44 in ]

Product Length 17.6 mm [ .692 in ]

Usage Conditions

Operating Temperature Range -20 – 80 °C [ -4 – 176 °F ]

Operation/Application

Pressure (mmHG) .187, .375, .75, 1.87, 2.62, 3.75, 7.5, 9, 9.37, 18.75, 37.5

Pressure (bar) 0, .001, .002, .003, .005, .01, .012, .025, .05

Pressure (psi) .003, .007, .014, .036, .05, .07, .072, .145, .174, .181, .362, .725

Proof Pressure Range 2 bar

Pressure (inH2O) .1, .2, .401, 1, 1.4, 2, 4.01, 4.82, 5.02, 10, 10.04, 20.09

Output Interface I²C

Pressure Accuracy ± 0.5% F.S

Packaging Features

Sensor Port Configuration Dual Sideport, Dual Horizontal

Other

Sensor Options No Option, Short Tube

Reference Number

TE Internal Number CAT-BLPS0082

Datasheets & Catalog Pages

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