Smart Transmitter Isolator | MTL Instruments MTL4044D

MTL4044D Smart Transmitter Isolator

The MTL4044D delivers advanced signal conditioning for hazardous area applications. This dual-output isolator provides intrinsically safe power for 2-wire smart transmitters. It maintains complete safety certification for Zone 0 and Division 1 locations. The unit features HART communication capability on its first output channel.

Key Features & Capabilities

• The isolator provides 15V minimum at 20mA for reliable transmitter operation.
• It delivers 28V maximum open-circuit voltage for proper device startup.
• The unit supports bi-directional HART communication on Output 1.
• It maintains 10kHz bandwidth for clear digital signal transmission.
• The device offers dual isolated 4-20mA output channels for flexibility.
• It carries ATEX and IECEx Zone 0 certification for hazardous areas.
• The unit provides 250V isolation between field and control circuits.

Technical Specifications

• The device handles a signal range from 0.5-22mA with 4-20mA nominal.
• It supports load resistance of 0-300Ω for conventional applications.
• The unit maintains 250Ω±10% load for smart transmitter systems.
• It achieves high accuracy of ±20μA at reference temperature.
• The device features low temperature drift of ±1μA/°C.
• A fast response time of 20ms ensures quick system updates.
• It requires 24V DC power at 95mA (1.2W) for operation.

Terminal Connections & Wiring

• Terminal 2: Channel 1 TX Supply positive connection
• Terminals 7-9: Channel 1 Output and HART communication lines
• Terminals 10-12: Channel 2 Output connections for second signal
• Terminals 13-14: Power Supply positive and negative inputs
• All terminals feature secure screw connections for reliable contact.

Output Channel Configuration

• Output Channel 1: Provides 4-20mA signal with HART communication
• Output Channel 2: Delivers isolated 4-20mA signal only
• Both outputs maintain complete electrical isolation from each other
• The design allows independent signal routing to different systems

Installation & Operation

• The unit supports easy DIN rail mounting in control cabinets.
• It provides safe power for smart transmitters in hazardous areas.
• The isolator enables bi-directional HART communication for configuration.
• It eliminates ground loops and electrical noise in signal paths.

Industrial Applications

• Perfect for process control systems requiring redundant signals.
• Ideal for smart transmitter networks in chemical plants.
• Essential for safety instrumented systems with dual outputs.
• Reliable for hazardous area monitoring with HART capability.

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