Description

FOXBORO 43AP‑F‑A4‑2‑C – 43AP Series Pneumatic Indicating Controller

Product Overview

43AP‑F‑A4‑2‑C is a field‑mounted pneumatic process controller without electronic components, designed for PI (Proportional + Integral) closed‑loop regulation. Using instrument air as the only power source, it measures local process variables and outputs a standard 3‑15 psi pneumatic signal to drive control valves. This legacy instrument provides safe control for hazardous areas where electrical equipment carries ignition risks.

Technical Specifications

• Brand: Foxboro
• Model: 43AP‑F‑A4‑2‑C
• Warranty: One Year
• Condition: 100% New & Original
• Control Mode: Proportional plus Integral (PI)
• Signal Output: 3‑15 psi pneumatic control signal
• Supply Air: 20 psi instrument air
• Enclosure: Weather‑resistant polyester housing, IP53 / NEMA 3

Application Scenarios

• Refinery Process Unit: Local pneumatic flow and pressure control for non‑electrical safety zones
• Oil & Gas Production Wellsite: Standalone field control without external power supplies
• Chemical Batch Plant: Backup pneumatic regulation for critical reactor pressure loops
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