Temperature Signal Isolation Solution – EATON MTL MTL5573 | MTL5000 Series
Where This Product Is Used
The EATON MTL MTL5573 temperature converter isolator is deployed in safety-critical industrial environments where accurate temperature measurement must be transmitted from hazardous zones to safe-area control systems. Typical installation sites include:
- Oil & Gas Upstream: Wellhead RTD/thermocouple signals routed to DCS/SCADA in safe areas
- Petrochemical & Refining: Reactor temperature monitoring in Zone 1/Zone 2 classified areas
- Chemical Processing: Exothermic reaction vessels requiring continuous temperature isolation
- Pharmaceutical Manufacturing: GMP-compliant temperature loops in classified clean rooms
- Power Generation: Turbine bearing temperature monitoring with galvanic isolation
- Water & Wastewater Treatment: Submersible sensor signal conditioning to PLC inputs
- Food & Beverage: CIP/SIP process temperature loops requiring ATEX-compliant isolation
Technical Specifications
| Part Number | MTL5573 |
| Manufacturer | EATON MTL (formerly MTL Instruments) |
| Series | MTL5000 Zener Barrier / Isolator Series |
| Function | Temperature Converter / Isolator / Power Supply |
| Input | RTD (Pt100, Pt1000), Thermocouple (J, K, T, E, R, S, B), mV, Ω |
| Output | 4–20 mA (2-wire, loop-powered or active) |
| Isolation | Galvanic isolation, 3-port (input / output / power) |
| Hazardous Area Certification | ATEX / IECEx Zone 0, 1, 2 (intrinsically safe) |
| Supply Voltage | 24 V DC nominal (9.6–35 V DC) |
| Mounting | DIN rail (EN 60715 TS35) |
| Operating Temperature | -20°C to +60°C |
| Weight | 220 g (approx.) |
| Housing | Plug-in module, compact DIN format |
| Compliance | IEC 60079-11, EN 50020, ATEX Directive 2014/34/EU |
Why Engineers Specify This Model
- Universal Sensor Input: Accepts RTD, thermocouple, mV, and resistance inputs — one SKU covers multiple sensor types, reducing spare-parts inventory
- 3-Port Galvanic Isolation: Eliminates ground loops and common-mode noise that corrupt temperature readings in long cable runs
- Intrinsic Safety Certified: ATEX/IECEx approval allows direct connection to sensors in Zone 0 hazardous areas without additional barriers
- DIN Rail Plug-In Design: Hot-swap capable; field replacement without rewiring reduces MTTR in critical processes
- Wide Supply Range: 9.6–35 V DC operation tolerates brownout conditions common in remote field panels
- Proven MTL5000 Platform: Backward-compatible with existing MTL5000 backplanes — no panel redesign required for upgrades
Complete System Bill of Materials
For a complete intrinsically safe temperature loop using the MTL5573, engineers typically specify:
- MTL5573 — Temperature Converter Isolator (this unit)
- MTL5000 DIN Rail Backplane / Carrier (MTL5041 or equivalent)
- 24 V DC DIN Rail Power Supply (e.g., MTL MPLC-24VDC or equivalent)
- Pt100 RTD or Type K Thermocouple (field sensor, customer-supplied)
- IS-rated field cable (screened, twisted pair, ≤ 300 Ω loop resistance)
- DCS/PLC 4–20 mA analog input card (safe area)
Compliance & Industry Standards
- ATEX Directive 2014/34/EU — Group II, Category 1G/2G
- IECEx Scheme — International hazardous area certification
- IEC 60079-11 — Intrinsic safety “ia” / “ib”
- EN 50020 — Electrical apparatus for explosive gas atmospheres
- RoHS Compliant — Restriction of Hazardous Substances
- CE Marked
Quality Assurance & Sourcing
All MTL5573 units supplied by Konmask.com are sourced from authorized EATON MTL distribution channels or verified surplus stock. Each unit undergoes:
- Visual inspection for label authenticity and housing integrity
- Functional verification of input/output signal conversion
- Certification marking check (ATEX/IECEx label verification)
- Anti-static packaging with ESD protection
Traceability documentation and test records available upon request for regulated industries.
How to Source This Part
To place an order or request a quotation for the EATON MTL MTL5573:
- Online: Add to cart directly on this page — stock availability shown in real time
- Email RFQ: [email protected] — include quantity, required delivery date, and project name
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Bulk / OEM Orders: Volume pricing available for 5+ units — contact us for a formal quotation
Application-Specific FAQ
Q: Can the MTL5573 accept a Pt100 RTD input directly from a Zone 0 hazardous area?
A: Yes. The MTL5573 is ATEX/IECEx certified for intrinsically safe “ia” connections, permitting direct RTD wiring from Zone 0 without additional zener barriers.
Q: What is the output signal type — active or passive?
A: The MTL5573 provides an active 4–20 mA output, meaning it sources the loop current. No external loop power supply is required on the output side.
Q: Is the MTL5573 compatible with existing MTL5000 series backplanes?
A: Yes. It is fully plug-in compatible with the MTL5000 DIN rail carrier system, enabling direct replacement of older MTL5000 series temperature converters.
Q: What thermocouple types are supported?
A: The MTL5573 supports J, K, T, E, R, S, and B type thermocouples in addition to Pt100/Pt1000 RTDs, mV, and resistance inputs — configurable via front-panel DIP switches or software.
Q: Can I get a certificate of conformity or ATEX declaration?
A: Yes. Compliance documentation is available upon request. Contact [email protected] with your order reference.
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