MTL4549C Hazardous Area Signal Conditioner: Reliable 4-20mA Conversion with HART Communication
Product Description
Convert 4-20mA signals from safe-area controllers to drive I/P converters or loads up to 800Ω in hazardous zones. Features bi-directional HART communication for valve positioners. Open-circuit detection triggers preset current drop for field wiring faults.
Key Features
• Dual-channel isolation
• HART digital signal support (500Hz-10kHz)
• Drives loads in Zone 0/Div.1 hazardous areas
• Field wiring fault detection
• Compact design with power LED
Technical Specifications
Brand: MTL
Model: 4549C (Full Suffix: MTL4549C-XXX)
Input Signal: 4-20mA floating
Output Signal: 4-20mA (HART compatible)
Range: 1mA under range / 24mA over range
Accuracy: Better than 20μA at 20°C
Load Capacity: 90Ω to 800Ω
Response Time: 100ms settling time
Ripple: <40μA peak-to-peak
Temp Drift: <1.0μA/°C
Installation Notes
• Certified for Zone 0, IIC, T4-T6 and Div. 1, Group A
• Mount in non-hazardous area
• Ensure max load ≤800Ω
• Verify wiring before power-up
Compatibility
Works with:
• All HART-enabled valve positioners
• 4-20mA controllers with readback
• Current/pressure converters
• PLC/DCS analog output cards
Safety Certifications
• ATEX/IECEx: Zone 0, IIC
• FM/CSA: Div. 1, Group A
• Safety parameters: Uo=28V, Io=93mA
Package Includes
• (1) MTL4549C signal conditioner
• Installation manual
• Compliance statement
• Terminal connection guide
Warranty & Shipping
12-month manufacturer warranty. Ships worldwide via FedEx, UPS or DHL. Delivery in 3-5 business days










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