MTL 5043 – Repeater Power Supply, Dual Output (4–20 mA)

Overview

The MTL 5043 (MTL5043) is a one-channel repeater power supply with dual output from the MTL 5000 Series. It supplies a fully floating DC supply to a conventional 2-wire 4/20 mA smart transmitter located in a hazardous area and repeats the transmitter current into two separate floating circuits in the safe area. It is an intrinsically safe isolating interface for analogue inputs, not an analogue output isolator.

Seven Star LLC supplies the MTL 5043 and other MTL 5000 Series modules to process industries across Oman and the GCC.

What the MTL5043 Is: A Dual-Output Repeater Power Supply for 2-Wire Transmitters

MTL describes the MTL5043 as a repeater power supply. The module sits in the safe area, provides a fully floating DC supply to one conventional 2-wire 4/20 mA smart transmitter located in the hazardous area, and repeats the transmitter current into two separate floating safe-area circuits. In control-system terms it is an analogue input interface with a signal splitter built in: one field transmitter and two receivers, for example a DCS input card and an independent recorder or shutdown system.

The transmitter may be installed in Zone 0, gas group IIC, temperature class T4 to T6, or a Division 1 Group A location, provided the transmitter itself is suitably certified. The module makes 15.5 V available to the transmitter at 20 mA and accepts 0 to 24 mA including over-range. The intrinsic safety description is Uo 28 V, Io 93 mA, Po 0.65 W with Um 253 V rms, and these values are what must be matched against the transmitter certificate and cable parameters during loop design.

Both outputs deliver 4 to 20 mA. Channel 1 drives 0 to 350 Ω on terminals 11 and 12, or 0 to 130 Ω when wired through terminal 10, which inserts a 220 Ω series resistor for HART applications. Channel 2 drives 0 to 550 Ω and can alternatively be used as a passive current sink (terminal 7) into 1 kΩ at up to 30 V. Transfer accuracy is better than 20 µA at 20 °C with drift below 0.5 µA per °C.

MTL5043 Terminals, HART Behaviour and Certificate Versions

Terminal allocation is fixed: 1 and 2 are the hazardous-area input (negative and positive), 7 is the channel 2 passive current sink negative, 8 and 9 are the channel 2 active output, 10 is channel 1 positive through the 220 Ω HART resistor, 11 and 12 are channel 1 negative and positive, and 13 and 14 take the 20 to 35 V DC supply. A green LED shows power. With both outputs at 20 mA the unit draws 100 mA at 24 V and dissipates up to 1.7 W, figures worth using when sizing cabinet supplies and heat load.

HART communication is passed in both directions on channel 1 only, so a handheld communicator or asset management multiplexer has to be connected on that output. MTL also warns that hardware differs by certificate: modules marked Baseefa 03ATEX0584 pass HART and meet the published specification, whereas older modules carrying BAS01ATEX7154 or Ex97D2248 do not pass HART and have neither the current sink on terminal 7 nor the 220 Ω resistor on terminal 10. For replacement purchases the certificate number on the label should be checked.

Key Features

• Repeater power supply for one 2-wire 4/20 mA smart transmitter
• Two floating 4 to 20 mA safe-area outputs from one input
• Transmitter may be in Zone 0, IIC or Division 1, Group A
• 15.5 V available to the transmitter at 20 mA
• Bi-directional HART on channel 1 (Baseefa 03ATEX0584 build)
• 250 V isolation between supply, input and outputs
• 20 to 35 V DC supply, DIN rail mounting

Industrial Applications

The MTL 5043 is used in oil and gas, chemical and petrochemical, power generation and water treatment plants wherever a 2-wire transmitter in a hazardous area has to be powered from the safe area and its 4 to 20 mA signal is needed in two places at once, for example by a control system and by a separate recorder or shutdown system.

Across Oman, Muscat, Sohar, Salalah and the GCC, Seven Star LLC supplies genuine MTL isolating interface modules to process industry operators.

Technical Specifications

Also available: Eaton MTL5541 Repeater Power Supply

Request a Quote for MTL 5043 – Repeater Power Supply, Dual Output (4–20 mA)

Contact Seven Star LLC for pricing, availability and technical support on the MTL 5043 repeater power supply and the MTL 5000 Series across Oman and the GCC.

Related Products

• 16137-153 – Siemens ModuleBus Cable B-Side (4 M) for APACS+/QUADLOG
• IKUSI BAS-700 Base Plate for CLASS A Modules
• Winsonic NE10005-008423 | EN50155 M12 PoE++ Managed Switch
• Winsonic NE22001-101100 Intelligent 4G LTE VPN Router | Dual SIM Failover, RS232, RS485, and Secure VPN for Industrial Use
• Elster Gas-Net D2 DSfG-DFU Data Forwarding Unit
• Fluidwell F114 Ratio Monitor / Totalizer