MEMS sensor measures very low pressures

Bourns model BPS125 pressure sensor
Bourns' Model BPS125 sensor can measure pressures in the 250 to 500 Pa range, suiting it for low pressure measurement applications such as portable oxygen generators, nebulizers, CPAP equipment, diagnostic spirometers and gas chromatography equipment. (Bourns)

Bourns, Inc. has introduced a MEMS-based, environmental pressure sensor model that provides high accuracy and ultra-low pressure range capabilities. The model BPS125 sensor can measure pressures in the 250 to 500 Pa range. The sensor is designed for space-constrained, 3.3 V digital systems that demand extremely sensitive and accurate readings. It produces an amplified, calibrated pressure reading output that can be acquired from the digital interface.

The sensor’s fully calibrated and compensated digital output helps to reduce processor workloads and removes the need for A/D conversion while providing long-term stability for reliable repeatability. The sensors are suited for various industrial, consumer and medium/low-risk medical designs, including portable oxygen generators, nebulizers, CPAP equipment, diagnostic spirometers and gas chromatography equipment.

The model BPS125 exhibits a Total Error Band (TEB) of 1.5 % FS over a temperature range of 0 °C to +60 °C (Six-Sigma process) and a lifetime drift of 0.5% full scale. The sensor is surface mountable to reduce assembly time.  

Sponsored by Digi-Key

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The sensor is RoHS compliant and is available with customized port configuration and calibration.

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