Sensortechnics LBA series ultralow differential pressure sensors

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The Sensortechnics LBA series pressure sensors can be used for ultra-low differential pressure measurement and are suitable for medical equipment, HVAC and measurement and control applications.

The sensors achieve pressure ranges of 250 and 500 Pa full scale. The sensors perform fully analog on-chip CMOS signal conditioning to allow for linear and temperature-compensated outputs with high differential pressure resolution of typ 0.1% and fast response times of typ 1 ms.

The sensors feature good sensitivity and offset stability and are based on thermal flow measurement of gas through a microflow channel integrated within the sensor chip. This narrow channel is said to decrease the flow through the sensor by several magnitudes compared to other flow-based pressure sensors. The low gas flow ensures high immunity to dust contamination and condensation and allows the use of connecting tubes and input filters without the need to recalibrate or correct the output signal. Because the flow impedance is predefined at the sensor chip level, the LBA series claims to provide small and cost-effective PCB-mountable housing.

The series features high flow impedance and linear 0.5 to 4.5 V output.