MTL Instruments MTL4544 Repeater Power Supply – MTL4500 Series Intrinsically Safe Interface
In hazardous area process plants — oil refineries, chemical facilities, offshore platforms — a single failed field instrument loop can cascade into unplanned shutdowns, safety incidents, and costly production losses. The repeater power supply is the invisible backbone that keeps 4-20mA field instrument signals alive and isolated across the safe/hazardous area boundary. Without a reliable unit like the MTL4544, engineers face signal degradation, ground loop interference, and the ever-present risk of ignition in Zone 1/Zone 2 classified areas.
The MTL Instruments MTL4544 is a single-channel repeater power supply from the globally trusted MTL4500 Series — one of the most widely deployed intrinsic safety barrier families in industrial automation. Designed to power and repeat 4-20mA signals from two-wire transmitters in hazardous locations, the MTL4544 delivers galvanic isolation, loop integrity, and DIN-rail convenience in a compact, field-proven package. It is certified to international IS standards and is a preferred choice for instrumentation engineers specifying ATEX and IECEx-compliant control systems worldwide.
Technical Specifications
- Model: MTL4544
- Series: MTL4500
- Manufacturer: MTL Instruments (now part of Eaton)
- Function: Repeater Power Supply – powers and repeats 4-20mA two-wire transmitter signals
- Channels: Single channel
- Hazardous Area Certification: ATEX / IECEx (Zone 0, 1, 2 / Div. 1, 2)
- Isolation: Galvanic isolation between field, supply, and output circuits
- Mounting: DIN rail (35mm)
- Supply Voltage: 24V DC (nominal)
- Output Signal: 4-20mA repeating
- Weight: Approx. 80g
- Standards: EN 60079, IEC 60079 series
Note: Always refer to the official MTL4544 datasheet for complete certified specifications before installation.
Key Features & Benefits
- Galvanic Isolation: Eliminates ground loops and protects DCS/PLC inputs from field-side faults
- Intrinsic Safety Certified: ATEX/IECEx approved for use with Zone 0/1/2 hazardous area transmitters
- Transparent Signal Repeating: Accurately repeats 4-20mA without signal distortion
- Compact DIN-Rail Design: Space-efficient form factor for high-density marshalling cabinets
- Plug-in Terminal Blocks: Simplifies field wiring, maintenance, and module replacement
- Wide Compatibility: Works with standard two-wire 4-20mA HART transmitters
- Proven Reliability: MTL4500 Series has decades of field deployment in critical process industries
Industry & Equipment Applications
- Oil & Gas: Upstream wellhead instrumentation, downstream refinery process loops
- Chemical & Petrochemical: Reactor monitoring, tank level and pressure transmitter interfaces
- Offshore Platforms: Zone 1 classified areas requiring certified IS interfaces
- Power Generation: Boiler and turbine instrumentation signal conditioning
- Pharmaceutical: Clean-room and hazardous process area sensor interfaces
- Water & Wastewater: Remote field transmitter signal isolation to SCADA systems
System Integration & Compatible Parts
The MTL4544 integrates seamlessly within MTL4500 Series IS barrier systems. Compatible and complementary components include:
- MTL4541: Single-channel repeater power supply (non-isolated variant)
- MTL4546: Repeater power supply with HART signal pass-through
- MTL4599: MTL4500 Series DIN-rail bus connector system
- MTL4500 Series Power Supply Units: Dedicated 24VDC supply rails for MTL4500 modules
- Compatible DCS/PLC Platforms: Honeywell, Yokogawa, ABB, Siemens, Emerson DeltaV
Our Quality Assurance Process
At Konmask.com, every MTL4544 unit we supply undergoes a rigorous sourcing and verification process:
- Sourced from authorized distributors and verified supply chains
- Visual inspection and label/certification marking verification upon receipt
- Cross-referenced against MTL Instruments official part numbers and revision history
- Packaged in anti-static, protective materials for safe international shipping
- Full traceability documentation available upon request
How to Order
- Submit an inquiry via our website contact form or email support@konmask.com
- Provide your required quantity, delivery timeline, and destination country
- Receive a formal quotation with lead time and shipping options within 24 business hours
- Confirm order and receive proforma invoice
- Shipment with full documentation (packing list, certificate of conformity)
Why Choose Konmask.com?
- Specialized in industrial automation and process control components for global B2B buyers
- Extensive inventory of MTL Instruments, Siemens, ABB, Honeywell, and other leading brands
- Fast response to RFQs — typically within 24 hours
- Competitive pricing for both small and large volume orders
- Reliable international shipping with export documentation support
- Dedicated technical support team with instrumentation engineering background
Frequently Asked Questions
Q: What is the difference between MTL4544 and MTL4541?
A: The MTL4544 provides galvanic isolation between field, supply, and output circuits, while the MTL4541 is a non-isolated repeater power supply. The MTL4544 is preferred where ground loop elimination is required.
Q: Is the MTL4544 compatible with HART transmitters?
A: The MTL4544 passes the 4-20mA signal but does not include dedicated HART signal conditioning. For full HART transparency, consider the MTL4546.
Q: What hazardous area zones is the MTL4544 certified for?
A: The MTL4544 is ATEX/IECEx certified for use with transmitters in Zone 0, Zone 1, and Zone 2 hazardous areas (Gas Groups IIC, IIB, IIA).
Q: Can I get a datasheet or certificate of conformity?
A: Yes. Contact us at support@konmask.com and we will provide the official MTL4544 datasheet and available certification documents.
Q: What is the minimum order quantity?
A: We supply from single units to bulk orders. Contact us for volume pricing.
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