I/P Converter - PC15 | OMC

I/P Signal Converter OMC PC15

The OMC PC15 is a two-wire field-mounted electro-pneumatic converter designed to convert a 4–20 mA signal into a proportional pneumatic output pressure. It is typically installed as an interface between an electronic controller and a pneumatic actuator on a linear control valve.

Application Scope

• Analog control valves with pneumatic actuators
• Retrofit projects with electronic PLC/DCS and existing pneumatic instrumentation
• Pressure, temperature, flow, or level control loops
• Industrial steam, process water, compressed air, and utility networks

Technical Selection Data

• Input: 4–20 mA; optional 0–20 mA, 1–5 V, or 0–10 V on request
• Output: 3–15 psi, 2–18 psi, 2–20 psi, or 4–30 psi
• Supply air pressure: 25 psi / 1.7 bar, 30 psi / 2 bar, or 45 psi / 3 bar
• Pneumatic connections: 1/4" NPT
• Enclosure: IP55, IP65 available
• Ambient temperature: -20 to +70 °C
• Linearity ≤1%, hysteresis ≤0.5%, repeatability ≤0.2%

Installation and Instrument Air

PC15 mounts on 35 mm DIN EN 50022 rail. Stable operation requires clean, dry instrument air. A filter-regulator with max 25 μm filtration is recommended upstream to prevent faults from moisture, oil, or particulates.

Variants and Certifications

Standard PC15 features a polycarbonate cover and cast aluminum body with anti-corrosion coating. PC15.1 is available for intrinsic safety (ATEX: II 1G Ex ia IIC T6/T5 Ga) for hazardous areas, requiring certified supply circuits per EN 60079.

FAQ

When to select PC15 over PC13?
Use PC15 when the converter must be field-mounted near the valve or actuator.

When is PC18 required?
Select PC18 when the actuator requires higher control pressure, up to 0.5–8 bar.