Dual-Channel Intrinsic Safety Repeater Power Supply for Hazardous Zones
The MTL 5044 is a high-reliability industrial automation component engineered to deliver precision signal conditioning in explosive environments. As a dual-channel intrinsic safety repeater power supply, it provides isolated 4-20 mA signal transmission for two 2-wire transmitters in Zone 0/IIC hazardous areas, outperforming traditional single-channel solutions like the MTL 5042 . Its advanced galvanic isolation technology ensures 250 V rms isolation between input, output, and power terminals, effectively eliminating ground loops and electromagnetic interference. With ±5 µA typical conversion accuracy at 20°C and a rapid 250 µs response time, the 5044 excels in dynamic process control scenarios, surpassing competitors like Pepperl+Fuchs’ KFD2-SR2-EX2 in both speed and precision . The device supports bidirectional HART communication for smart transmitters (2-wire only), enabling remote configuration without compromising safety—a feature absent in many legacy systems .
Certified Ruggedness for Extreme Industrial Conditions
Built to withstand harsh industrial environments, the MTL 5044 holds comprehensive safety certifications, including ATEX (II 1 GD Ex ia IIC T4-T6), IECEx, and UL Class I, Div. 1 listings, making it suitable for oil & gas refineries, chemical plants, and pharmaceutical production facilities . Its intrinsic safety parameters (Uo = 28 V, Io = 93 mA, Po = 0.65 W) ensure compliance with global explosion protection standards, while a reinforced housing resists vibrations, 5-95% humidity, and extreme temperatures (-20°C to +60°C) . Unlike Siemens’ SICL modules, which often require additional surge protection, the MTL 5044 integrates a fail-safe mechanism that maintains signal integrity during power fluctuations, reducing downtime by up to 30% in critical applications . The compact 110g DIN rail mount design (110 x 104 x 16.2 mm) maximizes panel space, while plug-and-play terminals simplify installation and maintenance .
Scalable Integration for Modern Process Automation
The MTL 5044 redefines flexibility in industrial networks, supporting both 2-wire and 3-wire transmitters with floating output design (0-550 Ω load resistance) and seamless integration with PLCs, DCS systems, and HMIs . Its dual-channel architecture allows simultaneous signal conditioning for multiple sensors, ideal for redundant monitoring in safety-critical processes. For HART-enabled setups, the 5044 acts as a passive repeater, ensuring uninterrupted communication without external power boosters—a key advantage over Pepperl+Fuchs’ KFD2-UT2-EX1 . While superseded by the MTL5544 for new installations, the 5044 remains a cost-effective choice for legacy systems, offering backward compatibility with MTL 5000 series modules and a 10-year operational lifespan . Its low power consumption (1.5 W at 24 VDC) aligns with energy-efficient practices, while the isolated power supply design minimizes cross-channel interference . This combination of safety, scalability, and reliability positions the MTL 5044 as a cornerstone for hazardous area automation.
| Attribute | Specification |
| Model | MTL 5044 |
| Type | Dual-channel intrinsic safety signal isolator/repeater power supply for 2/3-wire transmitters in Zone 0/IIC hazardous areas. |
| Manufacturer | Measurement Technology Ltd. (MTL) / Eaton (legacy product). |
| Applications | Oil & gas refineries, chemical processing plants, pharmaceutical facilities; Class I, Div. 1 hazardous areas. |
| Signal Type | 4-20 mA with bidirectional HART communication support for 2-wire transmitters (unidirectional for 3-wire). |
| Channels | Dual-channel. |
| Isolation | 250 V rms between input, output, and power terminals. |
| Accuracy | ±5 µA typical at 20°C. |
| Response Time | <250 µs to settle within 10% of final value. |
| Certifications | ATEX (II 1 GD Ex ia IIC T4-T6), IECEx (Ex ia IIC -20°C ≤ Ta ≤ +60°C), UL (Class I, Div. 1), CSA, FM, CE. |
| Intrinsic Safety Parameters | Uo = 28 V, Io = 93 mA, Po = 0.65 W, Um = 250 V. Terminals 1-2 and 4-5 classified as non-energy-storing apparatus. |
| Temperature Range | -20°C to +60°C (operating); -40°C to +80°C (storage). |
| Humidity | 5-95% RH non-condensing. |
| Dimensions | 110 x 104 x 16.2 mm (4.33" x 4.09" x 0.64"). |
| Weight | 110 g. |
| Mounting | 35 mm DIN rail (EN 50022) with plug-in terminals. |
| Power Requirements | 20-35 VDC input; loop-powered for HART communication. |
| Power Consumption | 1.5 W at 24 VDC (with two 20 mA signals). |
| Output Load | 0-550 Ω per channel in safe area. |
| HART Compatibility | Full bidirectional HART communication for 2-wire transmitters; unidirectional for 3-wire. Supports Honeywell DE, Foxboro, and Yokogawa Brain protocols. |
| Terminals | Plug-and-play terminals for 2.5 mm² wires. |
| Warranty | 12 months. |
| Unique Features | Dual-channel architecture for simultaneous signal conditioning; fail-safe mechanism maintains signal integrity during power fluctuations; floating output design eliminates ground loops; bidirectional HART support for smart transmitters. |
| Environmental Resistance | Withstands vibrations (IEC 60068-2-6) and extreme humidity; reinforced housing for harsh conditions. |
| Compliance | Meets IEC 61508 standards for functional safety; compatible with MTL 5000 series modules. |
| Documentation | MTL 5000 Series Instruction Manual (INM5000) for installation and maintenance. |
| Replacement | Superseded by MTL5544 (MTL5500 series) for new applications, but still supported for legacy systems. |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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