The LBA Series offers differential low-pressure measurement with ranges of 250 and 500 Pa (1 and 2 inches of water) full scale. The sensors perform fully analog on-chip CMOS signal conditioning to allow for linear and temperature-compensated outputs. The devices are based on thermal flow measurement of gas through a micro-flow channel integrated within the sensor chip. The very narrow channel decreases the flow through the LBA sensor by several magnitudes compared to other flow-based pressure sensors, claims the manufacturer. The extremely 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 sensors provide very small and cost-effective PCB-mountable housings.
Sensortechnics Inc., 896 Main St., Walpole, MA 02081; 508-660-8823; 508-660-8836 (fax); email@example.com; www.sensortechnics.com