pressure die AMSYS

LME – digital analog sensor with amplified output

The LME differential low pressure sensors are based on thermal flow measurement of gas through a micro-flow channel integrated within the sensor chip. The innovative LME 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. The low profile sensors of the LME series feature a total height of only 9 mm including pressure ports and allow for flexible direct manifold assemblies. Further, the SMT devices are highly versatile to fit to custom adaptors for application-specific mounting requirements.

Due to their excellent sensitivity, accuracy, offset long term stability and long service life, LME sensors are ideal for differential pressure gas flow measurement in bypass configuration. They offer measuring ranges from 25 Pa (0.1 inH2O) Full Scale.

The sensors are not recommended for new designs.

Variants

LMI pressure sensors with I²C output

Characteristics

  • Pressure ranges 0 .. 25 Pa to 0 .. 2500 Pa differential / gauge, ±25 Pa to ±1250 Pa bidirectional differential
  • Output Signal SPI and analog 0,5 .. 4,5 V
  • Pressure connection O-ring (manifold), tube fitting with adapter
  • Size without nipples and pins 11,2 x 17,6 x 6 mm³
  • Operating temperature range -20 .. 80 °C
  • Supply voltage 5 V
  • Proof pressure 2 bar
  • Burst 5 bar

Applications

Medical devices

  • Respiratory devices
  • Sleep diagnostic devices
  • Sleep apnea therapy devices (CPAP)
  • Spirometers
  • Anesthetic devices
  • Dialysis machines
  • Infusion pumps
  • Oxygen concentrators
  • Vacuum suction pumps
  • Insufflators
  • Videoscopes
  • Blood sugar measuring devices
  • Pulse oximeters
  • Computer tomographs (CT)
  • Gamma probes

HVAC

  • Volumetric flow measurement
  • Channel pressure monitoring
  • Room pressure monitoring
  • Filter monitoring

Instrumentation

Available types

Name Pressure range Pressure type Output
LMES025BB6S ±25 Pa bidirectional differential SPI / Analog 0,5 .. 4,5 V
LMES050BB6S ±50 Pa bidirectional differential SPI / Analog 0,5 .. 4,5 V
LMES100BB6S ±100 Pa bidirectional differential SPI / Analog 0,5 .. 4,5 V
LMES250BB6S ±250 Pa bidirectional differential SPI / Analog 0,5 .. 4,5 V
LMES500BB6S ±500 Pa bidirectional differential SPI / Analog 0,5 .. 4,5 V
LMEM012BB6S ±1250 Pa bidirectional differential SPI / Analog 0,5 .. 4,5 V
LMES025UB6S 0 .. 25 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMES050UB6S 0 .. 50 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMES100UB6S 0 .. 100 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMES250UB6S 0 .. 250 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMES500UB6S 0 .. 500 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMEM010UB6S 0 .. 1000 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMEM012UB6S 0 .. 1250 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMEM015UB6S 0 .. 1500 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V
LMEM025UB6S 0 .. 2500 Pa differential / gauge SPI / Analog 0,5 .. 4,5 V

For information on prices and delivery times or if you have any technical questions, please contact info@amsys-sensor.com.