Overview

The MTL5541S Isolating Driver is a high-performance repeater power supply designed for 2- or 3-wire transmitters operating in hazardous areas. It provides a fully floating DC supply to energize field transmitters and repeats the current in a separate isolated circuit to drive safe-area loads.

The unit supports HART® communication, allowing bi-directional digital signals to be superimposed on the 4–20 mA loop current. Its compact DIN rail mounting and robust design make it ideal for control systems requiring both safety and accuracy.

Engineers choose the MTL5541S because it combines intrinsic safety certification with proven reliability across oil, gas, chemical, and pharmaceutical industries. It is often deployed in projects where ATEX, IECEx, and CE compliance is mandatory.

Technical Data

Typical Applications

• Isolation and powering of 2- or 3-wire transmitters in hazardous zones.

• Reliable signal transmission from field devices to safe-area control systems.

• Integration of HART® communication for advanced diagnostics and configuration.

• Protection of PLC and DCS inputs against surges and ground loops.

• Use in chemical plants, oil refineries, and pharmaceutical manufacturing facilities.

For example, many offshore platforms deploy the MTL5541S to ensure safe and accurate signal transfer from field transmitters to central monitoring systems. Its intrinsic safety design helps industries meet strict compliance requirements while maintaining operational efficiency.

FAQ

Q1: What is the main function of the MTL5541S?
A1: It powers hazardous-area transmitters and repeats their signals into safe-area circuits with full isolation.

Q2: Does it support HART® communication?
A2: Yes, it allows bi-directional HART® signals to pass through the 4–20 mA loop.

Q3: Can it be used in Zone 0 hazardous areas?
A3: Absolutely, it is certified for Zone 0, IIC, T4–6 hazardous locations when suitably installed.

Q4: How does it improve system safety?
A4: By providing galvanic isolation, it eliminates ground loops and protects control systems from surges.

Q5: Which industries benefit most from this product?
A5: Oil & gas, chemical processing, power generation, and pharmaceutical manufacturing.