Description

1. Product Title

FOXBORO 43AP‑PA42C/PC00‑ Pneumatic PID Indicating Controller

2. Product Overview

43AP‑PA42C/PC00 belongs to Foxboro legacy 43AP‑series field‑mount pneumatic indicating controller. It features proportional‑plus‑integral control algorithm, accepts 3‑15 psi pneumatic measurement signal and 3‑15 psi set‑point input, delivers standard 3‑15 psi pneumatic output to drive valve actuators. Equipped with bellows‑type pressure receiver element for process pressure measurement, built‑in bumpless auto‑manual transfer with balance gauge for smooth mode switching without process disturbance. Local pointer indication shows real‑time process variable and set‑point value. This discontinued pneumatic instrument is critical spare for petrochemical, refinery and power‑plant legacy pneumatic control loops, widely used for pressure, flow and level regulating control.

3. Technical Specifications

• Brand: FOXBORO
• Model: 43AP‑PA42C/PC00
• Warranty: One Year
• Condition: 100% New & Original
• Control Algorithm: Proportional + Integral (PI)
• Input Signal: 3‑15 psi pneumatic measurement signal
• Set‑point Signal: 3‑15 psi
• Output Signal: 3‑15 psi pneumatic output
• Measuring Element: PC brass bellows pressure receiver
• Air Supply: 20‑100 psi clean instrument air
• Function: Bumpless auto‑manual transfer, local pointer indication
• Mounting: Pipe / yoke field mounting
• Operating Temp: ‑40 °C ~ +80 °C
• Protection Class: IP53 / NEMA 3
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4. Application Scenarios

• Refinery & Petrochemical Pneumatic Control Loop: Field‑mount PI controller spare for pressure and flow control loops.
• Power‑plant Legacy Pneumatic Instrument System: Replacement unit for old‑style pneumatic regulating control circuits.
• Process‑plant Obsolete Instrument Maintenance: Direct‑fit spare for existing 43AP‑series pneumatic controller installations.