FOXBORO E69F-BI2

Description

1. Product Overview

2. Product Parameters

2.1 Core Safety & Electrical Specifications

• Intrinsic Safety Rating: Ex ia IIC T6 Ga (ATEX/IECEx), Class I, Div 1, Groups A/B/C/D (UL/cUL)
• Number of Channels: 2 isolated channels (independent protection per channel)
• Input/Output Type: 4-20mA DC current loop (compatible with HART 5/7)
• Input Voltage (Non-Hazardous Side): 18-30V DC (powered by DCS/I/O module)
• Output Voltage (Hazardous Side): ≤28V DC (limited by barrier)
• Output Current (Hazardous Side): ≤35mA (maximum safe current)
• Power Limitation: 0.8W maximum power to hazardous area (per channel)
• Isolation: 1500V AC channel-to-channel, 2500V AC channel-to-ground (reinforced isolation)
• HART Compatibility: Pass-through for HART signals (1200 bps) without signal degradation

2.2 Mechanical & Environmental Parameters

• Enclosure: DIN-rail mountable (35mm standard rail), polycarbonate housing with IP20 protection
• Dimensions: 17.5mm (W) × 115mm (H) × 105mm (D) (per channel; 35mm total width for 2-channel unit)
• Weight: 85g (2-channel unit)
• Operating Temperature: -40°C to +70°C (extended industrial range)
• Storage Temperature: -40°C to +85°C
• Relative Humidity: 5% to 95% (non-condensing)
• Vibration Resistance: 5-500Hz, 2g (IEC 60068-2-6)
• Shock Resistance: 30g (11ms half-sine wave, IEC 60068-2-27)

2.3 Certifications & Compliance

• Safety Certifications: ATEX (Ex ia IIC T6 Ga), IECEx (Ex ia IIC T6 Ga), UL/cUL (Class I, Div 1, Groups A/B/C/D), CSA, FM
• Standards Compliance: IEC 60079-11 (intrinsic safety), IEC 61508 SIL 2, RoHS
• Compatibility: Foxboro FBM207C/FBM232 I/O modules, third-party 4-20mA/HART transmitters, all major DCS/PLC systems
• MTBF: ≥1,000,000 hours (per Telcordia SR-332 standards)

3. Advantages & Features

1. Dual-Channel Isolation: FOXBORO E69F-BI2 provides independent intrinsic safety protection for two field devices in a single compact unit, reducing panel space requirements and installation costs by up to 50% compared to single-channel barriers.
2. HART Signal Pass-Through: FOXBORO E69F-BI2 supports bi-directional HART communication without signal loss, enabling remote configuration/calibration of smart transmitters in hazardous areas—eliminating the need for separate HART barriers or unsafe manual interventions.
3. Global Safety Certifications: Compliance with ATEX, IECEx, UL/cUL, and SIL 2 standards ensures FOXBORO E69F-BI2 meets safety requirements in all major industrial regions, simplifying cross-border project implementation.
4. High Isolation & Protection: 2500V AC channel-to-ground isolation protects non-hazardous DCS systems from voltage surges in hazardous areas, while strict energy limitation prevents ignition of flammable atmospheres.
5. Compact DIN-Rail Design: Ultra-slim 17.5mm per-channel width allows dense mounting in control panels, maximizing space efficiency in crowded enclosures typical of hazardous area control systems.

4. Application Fields & Cases

4.1 Application Fields

• Oil & Gas: Refinery tank farm level/pressure transmitter isolation, pipeline gas detection sensor protection, wellhead flow meter intrinsic safety
• Chemical Manufacturing: Reactor temperature/pressure transmitter isolation, hazardous area level switch protection, batch process pH sensor safety
• Pharmaceutical: Explosive solvent processing area instrument isolation, cleanroom hazardous gas detector protection
• Power Generation: Coal mine gas sensor isolation, biogas plant methane detector safety, fuel storage area level transmitter protection

4.2 Typical Cases

1. Refinery Tank Farm Monitoring: A Gulf Coast oil refinery installed FOXBORO E69F-BI2 barriers to isolate 4-20mA HART level transmitters in Class I, Div 1 tank farm areas from Foxboro FBM232 I/O modules. HART pass-through enabled remote transmitter calibration, reducing on-site maintenance in explosive zones by 60% and improving safety.
2. Chemical Plant Reactor Control: A European petrochemical plant used FOXBORO E69F-BI2 to protect pressure sensors in explosive reactor areas. Dual-channel design reduced panel space by 40% compared to single-channel barriers, while SIL 2 compliance met the plant’s safety integrity requirements.
3. Gas Processing Plant Instrumentation: A natural gas processing plant deployed FOXBORO E69F-BI2 for flame detector and flow meter isolation in Class I, Div 1 areas. Global ATEX/UL certifications simplified compliance with regional safety regulations, and rugged construction ensured reliable operation in extreme temperature conditions (-30°C to +65°C).

5. Competitive Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. Hazardous Area 4-20mA/HART Applications: Choose FOXBORO E69F-BI2 for isolating smart HART transmitters in Class I, Div 1/2 or ATEX Zone 0/1 areas—HART pass-through and dual-channel design optimize safety and efficiency.
2. Space-Constrained Control Panels: Opt for FOXBORO E69F-BI2 for dense panel installations—17.5mm per-channel width saves space compared to bulkier single-channel barriers.
3. Global Compliance Requirements: Select FOXBORO E69F-BI2 for international projects—multi-region certifications (ATEX/UL/cUL/IECEx) eliminate the need for region-specific barriers.

6.2 Precautions

1. Installation Guidelines:
   • Mount FOXBORO E69F-BI2 in non-hazardous areas only (control room/panel); ensure clear separation between hazardous (field) and non-hazardous (panel) wiring to maintain intrinsic safety.
   • Use only certified intrinsically safe field devices with matching Ex ia ratings (IIC T6) to ensure compatibility with FOXBORO E69F-BI2—non-certified devices may compromise safety.
2. Configuration Notes:
   • Verify that the DCS/I/O module’s output voltage (18-30V DC) matches FOXBORO E69F-BI2 input requirements; excessive input voltage will damage the barrier and void safety certifications.
   • For HART communication, ensure the loop resistance (250-600Ω) is maintained—insufficient resistance will disrupt HART signals even if the barrier supports pass-through.
3. Troubleshooting:
   • For no signal to hazardous area: Check input power from DCS/I/O module, verify wiring (polarity), and confirm field device is intrinsically safe and functional.
   • For HART communication failure: Inspect loop resistance, check for wiring damage, and ensure the barrier is not installed in a location with excessive electromagnetic interference (EMI).
4. Maintenance:
   • Inspect barrier wiring connections quarterly for corrosion or loosening (critical in humid environments); replace damaged wiring immediately to maintain intrinsic safety.
   • Do not modify or repair FOXBORO E69F-BI2—damaged barriers must be replaced to preserve safety certifications and protection.
   • Stock spare FOXBORO E69F-BI2 modules for critical applications—lead times for intrinsic safety barriers may exceed 8 weeks due to certification requirements.

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