pressure die AMSYS

LDE – digital analog sensor with amplified output

The digital/analog LDE 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 LDE 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, LDE sensors are ideal for differential pressure gas flow measurement in bypass configuration. They offer measuring ranges from 25 Pa (0.1 inH2O) Full Scale.


differentiall / relative: 0-25 Pa, 0-50 Pa, 0-100 Pa, 0-250 Pa, 0-500 Pa

bidirectional differentiall: ±25 Pa, ±50 Pa, ±100 Pa, ±250 Pa, ±500 Pa


  • Pressure ranges 0 .. 25 Pa to 0 .. 500 Pa differential / gauge, ±25 Pa to ±500 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


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


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


For information on prices and delivery times or if you have any technical questions, please contact