Description
1. Product Overview
The Foxboro E69F-BI2-S is a robust, premium-grade Current-to-Pneumatic (I/P) Converter designed to bridge the gap between advanced electronic control systems and rugged pneumatic valve actuators. It accurately translates a 4-20 mA DC electrical signal from a DCS or PLC into a proportional pneumatic output (typically 3-15 psi), ensuring precise, real-time control of process valves.
Housed in a heavy-duty, explosion-proof, and weatherproof cast-aluminum enclosure, the E69F series is built for the harshest field environments. It features a unique, dynamically balanced flexure design that virtually eliminates sensitivity to mechanical vibration, making it the industry standard for direct mounting on high-vibration valve yokes or field piping.
Key Applications:
- Oil & Gas Processing: Direct actuation of flow control valves in hazardous, explosive environments.
- Chemical Refineries: Reliable pneumatic conversion for aggressive chemical batching and mixing loops.
- Power Generation: Boiler feed water and steam pressure valve control.
- Pulp & Paper: High-vibration web tensioning and pneumatic roller adjustment systems.
2. Technical Features
| Feature | Technical Specification |
| Input Signal | 4 to 20 mA DC |
| Output Signal | 3 to 15 psi (20 to 100 kPa) proportional |
| Air Supply Required | 20 psi (1.4 bar) standard instrument air |
| Air Consumption | Extremely low steady-state bleed rate |
| Linearity & Accuracy | \pm 0.5\% of span |
| Vibration Effect | Less than 1\% of span per “g” (up to 80 Hz) |
| Housing Material | Low-copper cast aluminum with high-build epoxy finish |
| Mounting Options | Valve yoke, 2-inch pipe stand, or surface mount |
3. Procurement Process
- Application Match: We review your exact part number (E69F-BI2-S) to verify the input/output range and explosion-proof certification requirements match your plant’s hazardous area classifications.
- Formal Quotation: You receive a detailed quote outlining transparent pricing, current warehouse availability, and global express freight options.
- Order Confirmation: Finalizing your shipping requirements and preparing necessary export documents (e.g., Certificate of Origin).
- Sales Agreement: A Proforma Invoice (PI) is issued for standard corporate processing.
- Secure Payment: Settlement is accepted via standard T/T (Bank Wire Transfer).
- Quality Inspection: 100% pre-shipment verification of the pneumatic port threads, electrical terminals, and original Foxboro/Schneider factory seals.
- Industrial Packaging: The unit is securely packed in impact-resistant foam and heavy-duty corrugated boxing to protect the sensitive internal flexure mechanisms during transit.
- Global Logistics: Fast, fully trackable delivery via DHL, FedEx, or UPS direct to your maintenance hub.
4. Products Showcase (Photos & Video)


5. Related Models
- Foxboro E69P Series (Panel or rack-mounted I/P converters)
- Foxboro SRD991 (Intelligent Digital Valve Positioner)
- Foxboro IDP10 (Differential Pressure Transmitter)
- Fisher 546 / 846 Series (Alternative I/P transducers)
6. Warranty & After-Sales
- 12-Month Global Warranty: Full 1-year coverage ensuring the device holds its pneumatic calibration and electrical integrity.
- 100% Genuine Guarantee: We exclusively distribute original Foxboro (Schneider Electric) instruments. No gray-market or refurbished units without explicit disclosure.
- Technical Guidance: Access to official calibration manuals and mounting schematics to assist your instrumentation technicians.
7. FAQ
Q: What is the difference between the Foxboro E69F and E69P?
The “F” in E69F stands for “Field-mounted.” It features a rugged, explosion-proof and weatherproof enclosure designed to be mounted directly on the valve or a nearby pipe in harsh outdoor environments. The E69P is designed for “Panel” mounting inside a protected control room or cabinet.
Q: Does the E69F-BI2-S require a dedicated air regulator?
Yes. To maintain a stable 3-15 psi output, the I/P converter must be fed with clean, dry instrument air at a regulated supply pressure (typically 20 psi or 1.4 bar). We recommend installing a filter-regulator (such as an Airset) directly upstream of the device.
Q: Is the unit affected by heavy pipe vibration?
One of the core design strengths of the E69F series is its dynamically balanced galvanometer mechanism. This makes it highly resistant to the severe mechanical vibrations typically found when mounted directly onto large steam or process control valves.
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- Email: seren@ymgkplc.com
- Phone: +86 13313703791
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+86 13313703791
+86 13313703791
seren@ymgkplc.com


