MTL Instruments | MTL5544| 2-Channel Repeater Power Supply
Description
The MTL5544 is a 2-channel repeater power supply designed to energize and interface with conventional or smart 2-wire or 3-wire 4/20mA or HART transmitters located in hazardous areas. It repeats the current to drive safe-area loads and supports bi-directional digital communication signals for smart transmitters.
Features
- Dual Channels: Supports two transmitters simultaneously.
- HART Communication: Bi-directional transmission over 4/20mA loop.
- Hazardous Area Compatibility: Suitable for Zone 0, IIC, T4–6 hazardous areas.
- Safe-Area Outputs: Drives two safe-area loads with high accuracy.
Technical Specifications
Channels and Transmitter Location
- Channels: Two
- Transmitter Location: Zone 0, IIC, T4–6 (suitably certified), Div. 1, Group A hazardous location
Safe-Area Output
- Signal Range: 4 to 20mA
- Under/Over Range: 0 to 24mA
- Load Resistance: 0 to 360Ω @ 24mA, 0 to 450Ω @ 20mA
- Output Ripple: < 50µA peak-to-peak
- Transfer Accuracy at 20°C: Better than 15µA
- Temperature Drift: < 0.8µA/°C
Hazardous-Area Input
- Signal Range: 0 to 24mA (including over-range)
- Transmitter Voltage: 16.5V at 20mA
- Response Time: Settles within 10% of final value in 50µs
Communications
- Supported Protocols: HART (terminals 1 & 2 and 4 & 5 only)
Power Requirements
- Maximum Current Consumption: 96mA at 24V DC
- Power Dissipation: 1.4W @ 24V DC
MTL Instruments | MTL5544| 2-Channel Repeater Power Supply

MTL Instruments | MTL5544| 2-Channel Repeater Power Supply
Description
The MTL5544 is a 2-channel repeater power supply designed to energize and interface with conventional or smart 2-wire or 3-wire 4/20mA or HART transmitters located in hazardous areas. It repeats the current to drive safe-area loads and supports bi-directional digital communication signals for smart transmitters.
Features
- Dual Channels: Supports two transmitters simultaneously.
- HART Communication: Bi-directional transmission over 4/20mA loop.
- Hazardous Area Compatibility: Suitable for Zone 0, IIC, T4–6 hazardous areas.
- Safe-Area Outputs: Drives two safe-area loads with high accuracy.
Technical Specifications
Channels and Transmitter Location
- Channels: Two
- Transmitter Location: Zone 0, IIC, T4–6 (suitably certified), Div. 1, Group A hazardous location
Safe-Area Output
- Signal Range: 4 to 20mA
- Under/Over Range: 0 to 24mA
- Load Resistance: 0 to 360Ω @ 24mA, 0 to 450Ω @ 20mA
- Output Ripple: < 50µA peak-to-peak
- Transfer Accuracy at 20°C: Better than 15µA
- Temperature Drift: < 0.8µA/°C
Hazardous-Area Input
- Signal Range: 0 to 24mA (including over-range)
- Transmitter Voltage: 16.5V at 20mA
- Response Time: Settles within 10% of final value in 50µs
Communications
- Supported Protocols: HART (terminals 1 & 2 and 4 & 5 only)
Power Requirements
- Maximum Current Consumption: 96mA at 24V DC
- Power Dissipation: 1.4W @ 24V DC