Foxboro 130K‑N4‑LLPF Pneumatic Indicating Controller

Technical Specifications

Model:130K‑N4‑LLPF

Brand:Foxboro

Series:130 Consotrol

Control algorithm:Proportional plus Reset(PI)

Input signal:3‑15psi pneumatic

Output signal:3‑15psi pneumatic

Instrument air supply:20psi nominal

Mechanism:Force‑balance bellows

Configuration:LLPF for low‑load,fast‑response loop

Indicator:Vertical ribbon for process variable and setpoint

Mounting:Panel cut‑out mounting

Air consumption:0.5m³/h(auto mode),1.0m³/h(manual mode)

Zero drift:max 0.35% span per 1psi supply variation

Protection class:IP20(panel‑side)

Operating temperature:‑20℃ ~ +60℃

Storage temperature:‑40℃ ~ +85℃

Built‑in function

130K‑N4‑LLPF pneumatic indicating PI controller performs closed‑loop regulation for pressure,flow,temperature in legacy process plants. Force‑balance bellows compares process signal against mechanical set‑point and outputs corrective pneumatic signal. LLPF tuning optimizes stability for low‑volume downstream actuator loops.

Product Brief

130K‑N4‑LLPF belongs to Foxboro 130 Consotrol pneumatic control family,obsolete original spare part. Requires matched 20psi clean dry instrument air source and pneumatic pipe fittings. Widely used for original Foxboro automation equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation