SKU: 52093
| Attribute | Details |
|---|---|
| Manufacturer | MTL - Measurement Technology Ltd. |
| Product Type | 2-Channel IS-Input Switch Operated Relay |
| Model / Type | MTL 2211 |
| Certification | [EEx ia] IIC, Baseefa No. Ex802333 |
| Standards Compliance | BS 5501 Part 7:1977, EN 50 020, IEC 79-11 |
| Electrical Ratings | Umax: 7V, Ik: 22mA |
| External Parameters | Cext: 13µF, Lext: 69mH |
| Maximum Ambient Temperature | 60°C |
| Hazardous Area Classification | Cl. I Div.1 Gp. A,B,C,D; Cl. II Div.1 Gp. E,F,G; Cl. III Div.1 |
| Country of Origin | England |
| Condition | Used |
| Weight | 540 g |
The Measurement Technology MTL 2211 2-Channel IS-Input Switch Operated Relay is an intrinsically safe interface designed for use in hazardous-area applications. It acts as a protective barrier between field switches or sensors located in explosive zones and the safe-area control systems. Each of its two independent channels transfers discrete signals through galvanic isolation, preventing potential faults or surges from entering the control side. Engineered for precise performance and compliance with stringent international standards, the MTL 2211 ensures reliability in safety-critical automation systems.
With Baseefa and [EEx ia] IIC certification, this relay offers dependable operation in Class I, II and III Div 1 hazardous environments. Its compact design, low-voltage operation, and high isolation capacity make it ideal for monitoring and controlling field circuits in chemical plants, oil & gas refineries, and marine control systems. Built in England, the MTL 2211 combines robust protection, superior electrical integrity, and long-term durability—making it a trusted choice for industrial safety instrumentation.
Key Features:
1. Dual Channel Design: Two independent intrinsically safe input channels for reliable signal transfer.
2. Intrinsic Safety: Certified [EEx ia] IIC for use in explosive atmospheres.
3. Galvanic Isolation: Ensures complete electrical separation between field and control circuits.
4. Wide Compliance: Meets BS 5501, EN 50 020, and IEC 79-11 safety standards.
5. Compact & Robust: Designed for DIN-rail mounting with durable metal housing.
6. Stable Performance: Operates reliably at ambient temperatures up to 60 °C.
7. Low Voltage Input: Accepts maximum input voltage of 7 V with current 22 mA.
8. High Energy Limitation: Cext 13 µF and Lext 69 mH prevent unsafe energy buildup.
9. Global Safety Classification: Approved for Class I, II & III hazardous divisions.
10. Proven Reliability: Designed by MTL UK for long-term industrial safety use.
Applications:
1. Oil & Gas Refineries: Provides safe interface between field switches and DCS/PLC systems.
2. Chemical Plants: Isolates hazardous-area sensors from control circuits.
3. Marine Automation: Used in explosion-proof monitoring systems onboard vessels.
4. Process Control Systems: Ensures secure operation of emergency shutdowns.
5. Power Generation Plants: Transfers discrete input safely from field devices.
6. Pharmaceutical Industry: Maintains intrinsic safety in cleanroom control systems.
7. Tank Farms: Interfaces float switches and level sensors in flammable zones.
8. Industrial Automation: Protects low-voltage I/O from ground loops and surges.
9. Hazardous Area Instrumentation: Suitable for EX Zone 0/1 monitoring circuits.
10. Safety Interlock Systems: Provides reliable switching for alarms and trip functions.
Explore the reliable Switch Operated Relay at Aeliya Marine Tech designed for safe signal switching, intrinsic safety, and long-lasting performance in industrial control and automation systems.
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