The BAPI ZPS Series Differential Pressure Transmitter is an accurate, rugged and economical solution for measuring and reporting duct/building static pressure, room-to-room differential pressure or air flow velocities/volumes. The ZPS Series micro-machined silicon piezoresistive pressure sensor is specifically developed for low differential pressure. The sensor's custom ASIC (Application Specific Integrated Circuit) provides five-point error correction over the compensated temperature range for excellent accuracy, repeatability and stability. Kele is the leading supplier of building automation products. When you need the right product, right now, count on Kele.