MTL Instruments MTL5544S | Dual 4-20mA HART Repeater

MTL5544S Repeater Power Supply Overview

The MTL5544S from MTL Instruments provides advanced signal conditioning with current sink operation for hazardous area applications. This dual-channel unit delivers precision signal transfer with HART communication support and exceptional accuracy. The MTL5544S features wide signal range capability and fast response time for critical process control systems.

Technical Specifications

• Manufacturer: MTL Instruments
• Model: MTL5544S Repeater Power Supply
• Channels: Two independent channels
• Hazardous Rating: Zone 0, IIC, T4-T6
• Signal Range: 4-20mA (0-24mA over-range)
• Communication: HART protocol support
• Response Time: 50μs to within 10% of final value

Safe-Area Output Specifications

• Signal Range: 4 to 20mA standard operation
• Over-range Capability: 0 to 24mA extended range
• Load Resistance (MTLx544): 0-360Ω @ 24mA
• Load Resistance (MTLx544): 0-450Ω @ 20mA
• Current Sink: 600Ω maximum load
• Voltage Source: 24V DC maximum
• Output Resistance: >1MΩ isolation
• Circuit Ripple: <50μA peak-to-peak

Hazardous-Area Input Performance

• Input Range: 0-24mA including over-range
• Transmitter Voltage: 16.5V at 20mA
• Transfer Accuracy: Better than 15μA at 20°C
• Temperature Drift: <0.8μA/°C
• Response Time: 50μs settling time
• Communication: HART on terminals 1-2 and 4-5

Electrical Characteristics

• Accuracy: High-precision 15μA transfer
• Stability: Low 0.8μA/°C temperature drift
• Speed: Fast 50μs response capability
• Isolation: Excellent >1MΩ output resistance
• Noise: Low <50μA ripple performance

Communication Features

• HART Support: Terminals 1-2 and 4-5
• Protocol: Bidirectional digital communication
• Compatibility: Smart transmitter integration
• Signal Integrity: Maintained during data transfer

Application Flexibility

• Operation Mode: Current sink configuration
• Load Compatibility: Wide resistance range
• Signal Range: Extended 0-24mA capability
• Environment: Zone 0 hazardous areas
• Integration: Multiple system configurations

Frequently Asked Questions

• What is the maximum load resistance?

600Ω maximum for current sink operation mode.

• What communication protocol is supported?

HART digital communication on specified terminals.

• What is the signal transfer accuracy?

Better than 15μA accuracy at 20°C ambient temperature.

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