Barksdale 425H4-21 Pressure Transducer

The Barksdale 425H4-21 Pressure Transducer is a low-pressure sensor that converts 0–30 psi into a 4–20 mA current-loop signal for reliable analog control in industrial settings, where steady, real-time pressure monitoring is essential. It operates from a 12–30 VDC supply and delivers a proportional current output that can be read by PLCs, DCS, or data loggers over standard two-wire connections, supporting straightforward installation and dependable signaling across modest cable runs. As part of Barksdale’s Series 420 general-industrial transducers, the 425H4-21 is designed for consistent performance in environments requiring monitoring of low-pressure lines, with the 0–30 psi range aligning with many routine process control tasks. The combination of 12–30 VDC excitation, 0–30 psi range, and 4–20 mA output makes this model well suited for retrofits or new builds that rely on standard current-loop instrumentation in industrial control systems.