The DPS629 monitors differential pressures of air and compatible gases and liquids. The design uses dual sensors that convert pressure changes into a standard 4-20 mA output signal for two-wire circuits. Its smaller size and fewer moving parts make for improved response time and reliability. Terminal block, zero, and span adjustments are accessed under the top cover. Designed to meet NEMA 4x IP66 construction, the unit is applicable for flow elements, heat exchangers, filters, pumps and coils.