ABB V18311H-4821101 I/P Signal Converter

Product Overview

The ABB V18311H-4821101 I/P Signal Converter is a high-accuracy current-to-pneumatic (I/P) converter designed to transform standard electrical current signals into stable pneumatic pressure outputs. It is widely used in valve positioners, pneumatic actuators, and process control systems, providing a reliable interface between electrical control signals and pneumatic devices in demanding industrial environments.

Technical Specifications

• Model: V18311H-4821101

• Product Type: I/P Signal Converter

• Input Signal: 4…20 mA DC

• Input Impedance: Typical approx. 250 Ω

• Output Signal: Pneumatic pressure

• Output Pressure Range:

  • 3…15 psi (0.2…1.0 bar, typical)

• Supply Air Pressure:

  • 20…100 psi (1.4…7 bar, typical)

• Air Supply Requirement: Clean, dry, oil-free instrument air

• Linearity: ≤ ±1% FS (typical)

• Repeatability: ≤ ±0.2% FS

• Response Time: Fast response suitable for dynamic control

• Ambient Temperature: -20 °C … +70 °C

• Mounting: Panel or bracket mounting

• Housing: Rugged industrial design for field installation

Advantages and Features

1. High-Accuracy Signal Conversion
   Precisely converts 4–20 mA signals into proportional pneumatic pressure outputs.

2. Excellent Stability and Repeatability
   Ensures reliable long-term operation in continuous process control applications.

3. Wide System Compatibility
   Easily integrates with DCS, PLC, and various process control systems.

4. Rugged Industrial Construction
   Designed to withstand harsh industrial environments.

5. Easy Installation and Maintenance
   Simple adjustment and modular design help reduce downtime.

Typical Applications

• Pneumatic control valve systems

• Valve positioners and actuators

• Oil and gas process control

• Chemical and pharmaceutical plants

• Power generation, metallurgy, and water treatment

• Industrial automation and instrumentation systems

Precautions

1. Verify that the input current signal matches the specified range before use.

2. Use clean, dry, and oil-free instrument air only.

3. Maintain the supply air pressure within the recommended range.

4. Avoid installation in areas with excessive vibration or high temperature.

5. Periodically inspect pneumatic and electrical connections for reliable operation.

The structure and details of the product：

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