Ashcroft 4480A Pneumatic Pressure Transmitter

Ashcroft 4480A Pneumatic Pressure Transmitter converts a 0–600 psi process pressure into a proportional 3–27 psi pneumatic output signal for interfacing with standard pneumatic controllers and indicators. The device is designed for rugged industrial environments and provides 0.5% of span accuracy with two calibration adjustments to trim zero and span for installation variations. The 4480A variant follows Ashcroft’s pneumatic transmitter lineage, delivering a reliable, non-electrical signaling option for process control loops that rely on air pressure signaling rather than electrical sensors. Typical use cases include monitoring and controlling pressure within pneumatic control systems, where a 3–27 psi signal can drive actuators and controllers consistent with common industrial instrumentation.