Product Description

The M130F-N4 is a high-precision pneumatic indicating controller from the Foxboro 130 Series. Using a force-balance mechanism, it monitors process variables via a 3–15 psi input signal and maintains them at the desired setpoint with Proportional + Integral (P+I) control.

Designed for harsh industrial environments, this all-pneumatic controller excels where electrical power is unavailable or EMI is high. Its clear vertical scale provides real-time visualization of setpoint and process values, and its intuitive manual-to-auto transfer allows safe operator intervention without disturbing the process.

Key Specifications

• Controller Type: Pneumatic Indicating (Consotrol 130 Series)

• Model Number: M130F-N4

• Control Action: Proportional + Integral (P+I)

• Input Signal: 3–15 psi (20–100 kPa)

• Output Signal: 3–15 psi (20–100 kPa)

• Supply Pressure: 20 psi (140 kPa) nominal

• Scale: Vertical ribbon or pointer (0–100% or custom units)

• Accuracy: ±0.5% of span

• Repeatability: ≤0.2% of span

• Air Consumption: 0.5 m³/h (0.3 cfm) steady state

• Operating Temperature: -20 °C to +65 °C (-4 °F to +150 °F)

• Mounting: Flush panel (130 Series shelf required)

• Housing Material: Die-cast aluminum with polycarbonate components

Applications

• Legacy pneumatic control rooms and remote all-air stations

• Vessel pressure, tank level, and heat exchanger temperature control

• Hazardous locations (Class I, Div 1) where electrical controllers are impractical

• Startup or emergency manual override operations

Technical FAQ

• What is the function of the "Integral" (Reset) action?
  Eliminates steady-state offset, ensuring the process returns exactly to the setpoint after disturbances.

• How is the Proportional Band adjusted?
  Accessible internally; slide the unit out on its tracks and adjust the gain to match loop dynamics.