ABB V18345-2022521001 Electric Pneumatic Positioner

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1. Product Overview

The ABB V18345-2022521001 is a high-precision Electric Pneumatic Positioner, used to adjust valve openings for accurate process control. It converts electrical signals into pneumatic outputs to drive the valve actuator for controlling flow, pressure, or temperature. This positioner provides fast response and stable performance, widely used in petrochemical, power, chemical, water treatment, and general industrial automation applications.

2. Technical Specifications

Electrical

• Model: V18345-2022521001

• Input signal: 4–20 mA DC / 0–10 V DC

• Resolution: 12-bit digital signal processing

• Supply voltage: 24 V DC

• Power consumption: ≤ 2 W

• Hysteresis: ≤ 0.5%

• Linearity: ≤ ±0.5%

Pneumatic

• Supply pressure: 1.4–6 bar

• Air connection: 1/4” NPT / ISO G 1/4

• Maximum output flow: 250 Nl/min

• Response time: ≤ 1 s (typical)

Mechanical & Environmental

• Valve interface: NAMUR standard

• Protection class: IP65

• Operating temperature: –20°C ~ +70°C

• Storage temperature: –40°C ~ +85°C

• Material: Aluminum alloy, corrosion-resistant coating

• Display: Optional local position indicator

3. Advantages & Features

• High-precision control: Fast valve response with minimal hysteresis

• Compatibility: Supports standard 4–20 mA or 0–10 V signals; NAMUR interface

• Fast response & stability: Suitable for dynamic processes; vibration-resistant design

• Environmental adaptability: IP65, dust and moisture resistant, corrosion-proof housing

• Easy commissioning & maintenance: Remote calibration and manual adjustment; compact modular design

4. Applications

• Petrochemical and chemical process control

• Steam valve regulation in power plants

• Water and wastewater treatment systems

• Gas flow control

• Food, beverage, and pharmaceutical process automation

• HVAC and building automation

5. Precautions

1. Ensure input signal matches the positioner range (e.g., 4–20 mA).

2. Air supply must be clean, dry, and within specified pressure.

3. NAMUR interface must match actuator during installation.

4. Avoid strong impact and vibration.

5. Regularly check air connections and valve mounting.

6. Use protective covers or special coating versions in high-temperature or corrosive environments.

The structure and details of the product：

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