MTL4549Y Hazardous Area Signal Converter: Dual-Channel 4-20mA Interface with HART Support
Product Description
The MTL4549Y safely connects 4-20mA signals from controllers in safe areas to equipment in hazardous locations. It drives two current/pressure converters (or loads ≤800Ω) while enabling bi-directional HART communication for valve positioners. Open/short circuits in field wiring trigger automatic current reduction to preset levels for easy fault detection.
Technical Specifications
- Brand/Model: MTL4549Y Series
- Input Signal: 4-20mA floating
- Channels: Two isolated channels
- Load Capacity: 800Ω max (16V @20mA)
- Accuracy: Better than 20μA @20°C
- Temperature Drift: <1.0μA/°C
- HART Bandwidth: 500Hz-10kHz
- Response Time: <100ms to within 200μA
- Fault Detection: Open-circuit (<0.5mA), Short-circuit indicator
- Power Consumption: 70mA @24V DC
Installation Guide
Mount in safe area enclosures. Ensure Zone 0/IIC T4-T6 or Div.1 Group A certification for connected hazardous area devices. Maintain minimum 90Ω load for proper short-circuit detection. Verify wiring integrity using LED power indicator.
Compatibility
Works with all HART-enabled valve positioners and standard 4-20mA field instruments. Accepts signals from controllers with readback functionality. Compatible with any load ≤800Ω including I/P converters.
Certifications
Approved for use in: Zone 0, IIC, T4-T6 hazardous areas and Division 1, Group A locations. Intrinsic safety parameters: Uo=28V, Io=93mA, Po=0.65W.
Package Includes
- 1× MTL4549Y Signal Converter Unit
- Installation Documentation
- Compliance Statements
Warranty & Shipping
12-month manufacturer warranty. Ships worldwide via FedEx, UPS, DHL. Delivery tracking provided for all orders.










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