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Help CenterFOXBORO SRI986-BIDS7ZZZNA – Smart Electro-Pneumatic Valve Positioner for Precise Actuator Control
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Warranty: 365 days
Delivery time: 1 week for in-stock items; no more than one month at the latest
Payment: 50% advance payment, full payment prior to delivery
Express options: FedEx, UPS, DHL
4–20 mA control input – Standard loop-powered signal that drops into most DCS/PLC loops without extra power supplies.
HART compatibility (variant-dependent) – Enables remote configuration, stroke checks, and basic diagnostics over the same pair, which typically cuts commissioning time.
Single or double-acting capability – Works with a wide range of pneumatic actuators; you might notice less overshoot on tough trims.
Rugged, weatherproof housing – Built for harsh process areas; resists moisture and dust for outdoor racks and exposed pipe-bridge installs.
Auto-calibration and easy zero/span – Quick setup for valve stroke and travel; typically 5–10 minutes including leak check.
Low air consumption design – Helps reduce instrument air costs on large valve farms.
NAMUR/VDI/VDE mounting options – Standard brackets and feedback levers for linear or rotary actuators simplify retrofits.
| Brand / Model | FOXBORO SRI986-BIDS7ZZZNA |
| Product Type | Electro-pneumatic valve positioner (for linear/rotary pneumatic actuators) |
| HS Code | 9032.89 (Automatic regulating or controlling instruments; other) |
| Power Requirements | Loop-powered via 4–20 mA; no separate DC supply typically required |
| Signal Input / Output | Input: 4–20 mA DC; Output: pneumatic control to actuator (single or double-acting, per option) |
| Communication Interfaces | HART over 4–20 mA (on applicable SRI986 variants) |
| Pneumatic Supply | Clean, dry instrument air; typically 20–90 psi (1.4–6 bar) depending on actuator requirements |
| Enclosure / Protection | Industrial weatherproof enclosure; hazardous-area approvals per option code |
| Installation Method | Bracket mounting to valve actuator per NAMUR/VDI/VDE; pneumatic tubing to actuator ports |
This model fits right into process control loops where tight valve positioning matters:
Refining and petrochemicals – flow, pressure, and level loops on critical services
Chemical and specialty chemicals – jacket temperature control, feed regulation
Power and steam utilities – attemperator and fuel-gas valves
Pulp & paper – stock consistency and steam valves
Water and wastewater – aeration and chemical dosing valves
A maintenance lead at a Gulf Coast refinery told us the SRI986 “settled our cavitating service better than the legacy pneumatic positioner,” mainly because tuning was faster and less sensitive to supply pressure swings.
Reliability in harsh areas – The housing and internal design seem to handle outdoor conditions without drift.
Compatibility – Works with common actuator standards and most DCS analog output cards; HART hosts like AMS or PDM typically connect without surprises.
Lower lifecycle cost – Reduced air consumption and fewer manual adjustments translate into tangible operating savings.
Serviceability – Quick zero/span, simple stroke test, and clear behavior during fail conditions shorten downtime.
You get the best results by treating air and mounting carefully. One thing I appreciate is how forgiving the SRI986 is if the basics are right.
Mounting – Use the correct NAMUR/VDI/VDE bracket kit for your actuator type (linear or rotary). Ensure the feedback linkage moves freely through the full stroke.
Air quality – Supply clean, dry instrument air via a 5 μm filter regulator; keep supply within the actuator’s required pressure range.
Wiring – Shielded twisted pair for the 4–20 mA loop; earth/ground per site standards to minimize noise on long runs.
Hazardous areas – Check the nameplate approvals for the “BIDS7ZZZNA” option set; use appropriate barriers or conduit practices where required.
Commissioning – Run auto-calibration, verify end stops, then perform a small-step test from the DCS (e.g., 0–25–50–75–100%) to confirm linearity and hysteresis.
Routine maintenance – Inspect tubing and fittings quarterly, drain the air set, and re-check zero/span annually. For HART variants, keep the DD/DTM packages updated in your host system.
The SRI986 family is typically supplied with CE conformity and, depending on option codes, hazardous-area certifications such as ATEX/IECEx. RoHS compliance and cULus may apply to specific builds. If your site requires particular markings, we’ll verify against the exact SRI986-BIDS7ZZZNA nameplate before shipment.
Recommended Accessories & Supporting ComponentsBracket and linkage kits for your actuator model (NAMUR/VDI/VDE compliant)
Instrument air filter regulator (20–90 psi range) and stainless tubing/fittings
HART USB/Bluetooth modem for configuration and diagnostics (for HART variants)
Position transmitter module (4–20 mA valve feedback) when remote position feedback is required
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