Dwyer 668B-22-1 is a compact differential pressure transmitter ideal for air and non-conductive gases. With an accuracy of ±0.8% FS and a pressure limit of 15 psig, it operates in temperatures ranging from 0 to 170°F. It requires a power supply of 12 to 32 VDC and offers output signals of 4-20 mA, 0-10 VDC, or 0-5 VDC. It features accessible zero and span adjustments, a 3/16" OD barbed brass process connection, and a stainless steel and PC+ABS alloy enclosure. Thermal effect is ±0.03% FS/°F and it is compensated from 40 to 170°F.