Details

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Product Name: Foxboro SRI986-BIDS7ZZZNA – Electro-Pneumatic Positioner

Function:
Electro-pneumatic positioner for precise control of pneumatic valve actuators using electrical control signals. Designed to improve positioning accuracy and reduce valve friction.

Key Features:

• Input signal: 4–20 mA (standard)
• Mode of action: Direct (increasing input increases output)
• Mounting: IEC 534 / NAMUR standard
• Stroke range: 8–100 mm
• Angular range: 30° to 120° (linear or equal percentage)
• Supply pressure: 1.4–6 bar (20–90 psig)
• Output: 0–100% of supply air pressure
• Ambient temperature: -40 °C to +80 °C
• Protection class: IP54 (IP65 optional)
• EMC compliant with EN 61326 and EN 61000 standards
• Weight: Approx. 1.5 kg

Electrical Characteristics:

• Input resistance: <200 Ω at 20 °C
• Sensitivity: <0.1% F.S.
• Amplification and damping: Adjustable
• Split range capability: Up to 3-fold
• Cable entry: M20 × 1.5 with plastic cable gland
• Limit switches and position transmitter: Not included (optional via modular system)

Applications:

• Control of single-acting pneumatic actuators
• Process industries: chemical, oil & gas, water treatment
• Systems requiring fast response and high thrust
• Suitable for hazardous areas with ATEX, FM, CSA certifications

Compliance & Notes:

• CE marked
• EMC and vibration tested
• Recommended use with filtered air supply per ISO 8573-1
• Auxiliary manifold and attachment kits available separately

Related Models:

• SRI986-BIDS7ZZZNB – Same as above with built-in position transmitter
• SRI986-BIDS7ZZZNA-F – IP65 variant with retrofit kit
• SRI986-BIDS7ZZZNA-L – With integrated limit switches
• SRI986-BIDS7ZZZND – Reverse action version
• SRI986-BIDS7ZZZNA-R – Rotary adapter for angular applications