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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
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