Microbridge's MB-LPS family of low pressure sensors can sense differential air (or other non-corrosive gas) pressure, inferring differential pressure from nano-liters per second gas-flow through an integrated airflow channel having high pneumatic impedance (flow impedance). The thermo anemometer flow sensing principle, combined with a micro-flow channel having very high flow impedance, allows accurate sensing of low differential pressures. The family of sensors come in two series, the LPS1 and LPS2.

The LPS1 Series has measurement ranges from 0.1" H2O (25 Pa) up to 2" H2O (500 Pa) and can be configured to operate either unidirectional or bidirectional. The device provides a linear analog output resolution with 0.1% full-scale.

The LPS2 Series has a measurement range of 1" H2O (250 Pa) to 5" H2O (1250 Pa) and can be configured to operate either unidirectional or bidirectional. The sensor's analog output has dynamic range greater than 10000x and has excellent resolution (0.01% of full-scale) at low delta-P, up to 20% full-scale.

Key features of Microbridge include:

• Immunity to dust contamination and humidity
• Connection to yards of pneumatic tubing without significantly affecting the calibration of the pressure measurement
• Industry-leading combination of high-sensitivity, ease of use, and small size
• Affordable price for high-volume usage

Microbridge Microflow Pressure Sensors