Product details
MTL4549C Dual-Channel Isolator: HART®-Enabled Signal Repeater for Explosive Areas
Smart Signal Repeating
The MTL4549C safely repeats two 4-20mA signals to hazardous areas (Zone 0/Div.1). It drives two I/P converters or loads up to 800Ω. Features HART® digital communication for valve control.
Technical Highlights
- Brand/Model: MTL4549C (dual-channel version)
- Signal range: 1-24mA (4-20mA working range)
- Load capacity: 800Ω per channel (16V@20mA)
- Accuracy: ±20μA at 20°C
- Response time: 100ms (to within 200μA)
- Power: 24V DC / 70mA
- Isolation: 250V AC between zones
- Temp stability: <1μA/°C drift
- Ripple: <40μA p-p
Quick Setup
- Connect power to +ve/-ve terminals
- Wire inputs to channel terminals
- Link outputs to I/P converters
- Green LED confirms operation
Diagnostic Features
- Detects open circuits automatically
- Current drops below 0.9mA during faults
- No calibration needed
Works With
- HART® valve positioners
- PLC/DCS control systems
- Pneumatic actuators
- 20-35V DC power sources
Certifications
- ATEX/IECEx: Zone 0, IIC, T4-T6
- FM: Div.1, Group A
- Safety: Uo=28V, Io=93mA
Package Includes
- 1 × MTL4549C unit
- Installation guide
- 12-month warranty
- Global shipping: FedEx/UPS/DHL
Expert FAQs
- Q: Can it handle HART® 7 signals?
A: Yes – supports all HART® protocols (500Hz-10kHz bandwidth) - Q: What’s the max cable length?
A: Up to 1km with standard 18AWG cable - Q: Does it need external barriers?
A: No – built-in isolation meets Zone 0 requirements - Q: Can I monitor both channels separately?
A: Yes – independent channels with separate diagnostics - Q: What’s the operating temperature range?
A: -20°C to +60°C standard
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