MTL5041 | MTL | Repeater Power Supply

MTL MTL5041 Repeater Power Supply

The MTL5041 Repeater Power Supply is an intrinsically safe interface module designed to power conventional 2-wire 4-20 mA transmitters installed in hazardous areas while accurately repeating the signal to equipment located in the safe area. The module provides a fully floating DC supply, galvanic isolation, and high-accuracy signal transfer, making it suitable for process measurement applications requiring intrinsic safety compliance.

Product Specifications

Signal Isolation and Repetition

The MTL5041 is designed to interface directly with conventional 2-wire transmitters located in hazardous areas. It supplies operating power to the field device and transfers the process signal to the safe area while maintaining the intrinsic safety barrier between the two environments.

Its fully floating output architecture helps reduce ground loop issues and allows reliable signal transmission to control systems, recorders, indicators, or PLC analog input channels.

Hazardous-Area Applications

The module is intended for installation where field instruments are located in Zone 0 or Division 1 hazardous locations. By limiting the energy that can enter the hazardous area, the MTL5041 allows process transmitters to operate safely while maintaining measurement integrity.

Typical field devices include pressure, temperature, level, and flow transmitters using the standard 4-20 mA process signal.

Measurement Performance

The transfer accuracy of less than 20 uA at 20 deg C ensures faithful reproduction of the transmitter signal. Temperature drift remains below 1 uA per degree Celsius, helping maintain measurement stability across changing ambient conditions.

With a response time of less than 250 us, the module can accurately follow rapid signal variations without introducing significant delay into the measurement loop.

System Integration

The hazardous-area input accepts signals from 0 mA to 24 mA while simultaneously supplying 16.5 V to the transmitter at 20 mA. On the safe side, the module reproduces the signal as a standard 4-20 mA output capable of driving loads up to 1 kOhm.

This allows straightforward integration with DCS, PLC, SCADA, and process control systems that use standard analog current inputs.

Environmental and Compliance Characteristics

The module is rated for operation from -20 deg C to +60 deg C and is certified for use in hazardous environments under multiple international approval schemes.

Available approvals include ATEX, IECEx, FM, UL, and CSA certifications, supporting deployment across a wide range of industrial installations requiring intrinsic safety compliance.

Frequently Asked Questions

Q: What is the primary purpose of the MTL5041?

A: The MTL5041 powers a 2-wire 4-20 mA transmitter in a hazardous area and repeats the measured signal to a safe-area control system while maintaining intrinsic safety isolation.

Q: What output signal does the module provide?

A: The safe-area output is a 4-20 mA signal with support for 0-24 mA over-range and under-range conditions.

Q: Can the MTL5041 be used with standard PLC or DCS analog inputs?

A: Yes. The module provides a standard 4-20 mA output suitable for most PLC, DCS, recorder, and process control system analog input channels, provided the load does not exceed 1 kOhm.