Foxboro SRI983 Electro-Pneumatic Positioner

SRI983 Analog Valve Positioner

The SRI983 is an analog electro-pneumatic positioner designed for precise valve control using a 4–20 mA signal. It combines a robust mechanical unit with an integrated electrical-to-pneumatic converter, enabling fast, accurate valve actuation — even in harsh or explosive industrial environments.

Ideal for:

• Oil and Gas
• Petrochemical and Chemical
• Power Generation
• Water/ Wastewater
• Pulp and Paper
• Mining and Metals

Features:

• 4-20 mA analog input signal
• single or split-range operation (1:2 or 1:3)
• Loop powered
• Compatible with linear and rotary actuators
• Configurable for direct or reverse action
• Field-adjustable zero, span, gain and damping
• Tunable response
• Built-in pneumatic amplifier
• 1.4-6 bar (20-90 psi) operating pressure
• ATEX II 2G Ex d or Ex ia IIC T4–T6 certified
• Low sensitivity to vibration
• EMC compliant

Optional Features:

• Integrated pressure gauges
• Volume boosters
• Fail-freeze relays
• Gauge blocks

Document Downloads:

• SRI983-Data Sheet