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Certification
MTL 4544D Repeater Power Supply MTL Safety Barrier 20-35V DC
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Product Details:
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Detailed Product Description
| Number Of Channels: | Two | Location Of Switch: | Zone 0, IIC, T6 Hazardous Area Div.1, Group A, Hazardous Location |
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| Location Of Proximity Detector: | Zone 0, IIC, T4-6 Hazardous Area, If Suitably Certified Div.1, Group A, Hazardous Location | Voltage Applied To Sensor: | 7 To 9V Dc From 1k ±10% |
| Input/output Characteristics: | Normal Phase Outputs Closed If Input > 2.1mA (<2k In Input Circuit) Outputs Open If Input < 1.2mA (> 10k In Input Circuit) Hysteresis: 200µA (650) Nominal | Line Fault Detection (LFD) (when Selected): | User Selectable By Switches On The Side Of The Module. Line Faults Are Indicated By The LED For Each Channel. Line Fault Relay Is Energised And Channel Output Relay De-energised If Input Line-fault Detected Open-circuit Alarm On If I In < 50µA Open-circuit |
| Highlight: | 20V MTL Safety Barrier,35V MTL Safety Barrier,mtl 4544d |
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MTL 4544D Repeater Power Supply | Hazardous Area Signal Conditioning Solution
MTL (Measurement Technology Ltd) is a global leader in industrial instrumentation and hazardous area protection solutions. Specializing in intrinsic safety barriers, signal conditioners, and surge protection devices, MTL serves oil & gas, chemical, and process industries worldwide. With over 50 years of expertise, the brand delivers reliable, certified products for critical safety applications, ensuring operational excellence in explosive environments.
Product Overview
The MTL 4544D is a high-performance repeater power supply designed for reliable signal conditioning in hazardous industrial environments. This single-channel device provides safe and accurate signal transmission between field-mounted transmitters in explosive atmospheres and control systems in safe areas. Featuring dual outputs and HART communication support, it ensures precise 4-20mA signal repetition while maintaining intrinsic safety standards for critical process control applications in oil and gas, chemical, and other high-risk industries.
Key Features
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Dual Output Configuration - Single input channel with two independent safe-area outputs
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HART Communication Support - Bidirectional digital signal transmission capability
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Intrinsic Safety Certification - Approved for Zone 0/Division 1 hazardous locations
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Galvanic Isolation - 250V AC isolation between hazardous and safe areas
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Compact Design - Space-efficient module for high-density installations
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Wide Voltage Range - 20-35V DC operating voltage flexibility
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High Accuracy - Precision signal repetition with minimal error
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LED Status Indicators - Visual power and operational status monitoring
Technical Specifications
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Parameter |
Specification |
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Model Number |
MTL 4544D |
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Product Type |
Repeater Power Supply |
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Channels |
1 input channel, 2 output channels |
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Input Signal |
4-20mA from field transmitters |
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Output Signal |
4-20mA to control system (dual outputs) |
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Power Supply |
20-35V DC |
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Current Consumption |
96mA at 24V DC (with 20mA signals) |
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Power Dissipation |
1.4W at 24V DC |
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Signal Range |
4-20mA (0-24mA under/over-range) |
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Transfer Accuracy |
Better than 15μA at 20°C |
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Temperature Drift |
<0.8μA/°C |
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Response Time |
Settles within 10% of final value within 50μs |
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Safe-Area Load |
0-360Ω @24mA, 0-450Ω @20mA |
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Transmitter Voltage |
16.5V at 20mA |
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Isolation Rating |
250V AC |
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HART Support |
Terminals 1 & 2 (output channel 1 only) |
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Operating Temperature |
-20°C to +60°C |
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Protection Rating |
IP20 equivalent |
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Dimensions |
15.8mm W × 109.8mm H × 123.6mm D |
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Weight |
Approximately 110g |
Electrical Characteristics
Power Specifications
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Operating Voltage | 20-35V DC ±10%
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Current Consumption | Maximum 96mA at 24V DC
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Power Dissipation | 1.4W typical at 24V DC
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Isolation | 250V AC galvanic isolation between circuits
Signal Performance
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Input Signal Range | 4-20mA standard (0-24mA over-range)
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Output Signal Range | 4-20mA dual outputs
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Transfer Accuracy | Better than 15μA at reference temperature
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Temperature Stability | <0.8μA/°C drift across operating range
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Output Ripple | <50μA peak-to-peak maximum
Load Capabilities
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Safe-Area Load Resistance | 0-360Ω at 24mA, 0-450Ω at 20mA
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Hazardous-Area Transmitter Supply | 16.5V minimum at 20mA
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Output Current Capability | 0-24mA range coverage
Safety Certifications
Hazardous Area Approvals
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ATEX Certification | II 1G Ex ia IIC T4 Ga
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IECEx Certification | Ex ia IIC T4 Ga
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FM Approval | Class I, Division 1 Groups A, B, C, D
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CSA Certification | Canadian Standards Association approval
Safety Parameters
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Maximum Voltage (Uo) | 28V
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Maximum Current (Io) | 93mA
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Maximum Power (Po) | 651mW
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Maximum Input Voltage (Um) | 253V RMS or DC
Mechanical Specifications
Physical Construction
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Housing Material | Industrial-grade materials
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Enclosure Design | Compact form factor for high-density installation
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Mounting System | DIN rail compatible (35mm standard)
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Connection Method | Screw terminal blocks
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Weight | Approximately 110g
Environmental Specifications
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Operating Temperature | -20°C to +60°C
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Storage Temperature | -40°C to +80°C
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Protection Rating | IP20 equivalent
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Vibration Resistance | Suitable for industrial environments
Applications
The MTL 4544D is ideal for:
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Oil and Gas Facilities - Process measurement in explosive atmospheres
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Chemical Plants - Hazardous area signal conditioning and isolation
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Pharmaceutical Manufacturing - Critical process control applications
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Water Treatment Plants - Signal isolation and repetition
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Power Generation - Safety-critical measurement systems
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Industrial Automation - General process control applications
Installation & Operation
Mounting Configuration
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DIN Rail Mounting | Standard 35mm DIN rail installation
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Orientation | Any mounting position supported
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Clearance Requirements | Standard industrial spacing
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Group Installation | Can be mounted with other MTL series devices
Electrical Connections
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Terminal Connections | Screw terminal blocks for secure wiring
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Wiring Specifications | Follow manufacturer's torque specifications
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HART Communication | Terminals 1 & 2 for digital communication
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Grounding | Proper grounding for safety and performance
Why Choose MTL 4544D?
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Proven Safety | Certified for most demanding hazardous areas
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Dual Output Flexibility | Two independent outputs from single input
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HART Communication | Support for digital signal transmission
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High Accuracy | Precision signal repetition for critical applications
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Compact Design | Space-efficient for high-density installations
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Global Compliance | International safety certifications
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Reliable Performance | MTL's reputation for industrial reliability
Maintenance & Service
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Visual Inspection | Regular check of physical condition and LED status
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Performance Verification | Periodic signal accuracy testing
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Terminal Check | Verify terminal tightness during maintenance
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Environmental Protection | Ensure operating within specifications
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
Frequently Asked Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.
Contact Details
Achievers Automation Limited
Contact Person: sales2
Send your inquiry directly to us
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