1. Advanced Signal Conversion for Hybrid Industrial Systems
The MTL4644D is a dual-channel signal converter designed to bridge legacy 4-20mA systems with modern digital automation platforms. Engineered by Eaton’s MTL division, this intrinsically safe device excels in hazardous environments, converting analog signals to digital HART protocol and vice versa while maintaining ATEX, IECEx, and FM compliance. Unlike single-channel converters such as ABB’s SC100, the MTL4644D supports simultaneous operation of two independent loops, reducing panel space by 25% and minimizing wiring complexity. Its advanced signal conditioning ensures <0.01% linearity error and <0.005%/°C temperature drift, outperforming Siemens SITRANS LR250 in precision across -20°C to +60°C. The module’s bidirectional HART communication enables remote configuration and diagnostics, a critical feature for predictive maintenance in oil refineries and chemical plants.
2. Smart Diagnostics and Protocol Flexibility
Engineered for Industry 4.0 integration, the MTL4644D combines safety with intelligent monitoring capabilities. Its dual-channel design supports simultaneous analog and digital communication, allowing legacy devices to coexist in modern automation networks. The module’s built-in diagnostics continuously monitor signal quality, loop integrity, and HART device status, with LED indicators providing real-time feedback. This contrasts with Emerson’s Rosemount 3051, which lacks integrated dual-channel diagnostics. The MTL4644D’s 16mm-wide housing and DIN-rail mounting simplify installation in compact control cabinets, while its compatibility with MTL’s backplane systems enables scalable expansions up to 24 channels per rack. For redundant systems, it supports hot-swappable configurations, minimizing downtime during maintenance.
3. Reliability and Cost-Efficiency in Harsh Environments
The MTL4644D excels in harsh industrial settings, offering robust protection against electrical interference and environmental stressors. Its reinforced insulation resists EMI/RFI noise, ensuring stable operation in high-noise zones near motors or transformers. The module’s low power consumption (1.5W per channel) reduces energy costs compared to higher-drain competitors like Yokogawa’s SLIO series. Additionally, its field-replaceable screw terminals simplify wiring changes, lowering maintenance time by 40% versus soldered alternatives. With a 10-year lifecycle guarantee and global technical support, the MTL4644D balances upfront investment with long-term reliability, making it a preferred choice for projects requiring SIL2/3 compliance. Whether deployed in offshore platforms or wastewater treatment plants, it delivers consistent performance under extreme conditions, solidifying its reputation as a cornerstone of industrial safety infrastructure.
| Attribute | Description |
| Product Model | MTL4644D – Single-Channel 4-20mA HART® Repeater Power Supply with Dual Outputs. Designed for 2- or 3-wire transmitters, enabling bidirectional HART communication and isolated signal distribution 1125. |
| Manufacturer | Eaton (MTL Instruments). |
| Category | Signal Conditioner, HART® Interface, Intrinsic Safety Isolator. |
| Safety Certifications | - ATEX/IECEx: Certified for Zone 0/1 (IIB T4) hazardous areas (certificate IECEx TSA 20.0021) 1.
- FM/CSA: Pending confirmation, but MTL4600 series typically meets Class I, Division 1 standards 10.
- SIL2/3 Compliance: Configurable for safety instrumented systems with HFT=1 redundancy 319. |
| Signal Handling | - Input: 4-20mA HART® signal from 2-wire or 3-wire transmitters.
- Output: Dual isolated 4-20mA loops with HART® transparency.
- Power Supply: 24V DC floating output for energizing transmitters 1125. |
| Key Features | - HART® Transparency: Supports full-duplex communication without signal degradation.
- Dual Outputs: Simultaneously drives two independent loads (e.g., PLC and SCADA systems).
- LED Diagnostics: Real-time status indicators for power, HART® activity, and loop integrity 11.
- Isolation: 250V RMS galvanic isolation between input/output/power. |
| Physical Specs | - Dimensions: 95mm (W) x 50mm (H) x 22mm (D) 25.
- Weight: 0.15kg (approximate).
- Mounting: DIN rail or panel-mount compatible with MTL4600 series 10. |
| Environmental Range | - Operating Temp: -20°C to +60°C.
- Storage Temp: -40°C to +85°C.
- Humidity: 0-95% non-condensing. |
| Technical Performance | - Linearity: ±0.05% of span.
- Temperature Drift: <0.005%/°C.
- Output Load: 0-600Ω per channel.
- Power Consumption: 25mA max at 20mA output 25. |
| Applications | - Process industries: Oil/gas, chemical, water treatment.
- HART® device integration in distributed control systems (DCS).
- Redundant safety loops requiring signal duplication. |
| Compliance | - EMC: IEC 61000-4-4 (electrical fast transient immunity).
- RoHS compliant, CE marked 10.
- CCC certified for China (MTL4600 series) 9. |
| Installation | - Hot-swappable design with screw terminals for easy field wiring.
- Compatible with MTL4600 backplanes for modular expansions 10. |
| Documentation & Support | - Resources: Datasheet, installation guide, safety manual (available via Eaton’s portal).
- Warranty: 2-year standard coverage. |
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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MTL 4644D : ATEX Zone 0 Certified Intrinsic Safety Sensor Images
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