HART Multiplexer features SIL3 rating.

Press Release Summary:

Featuring channel to channel isolation, MTL4850 is suitable for connection to instrument loops performing safety functions up to and including SIL3. Multiplexer ensures there is no effect on analog loops to which it is connected; multiple concurrent faults in components that couple unit to loops would have to be present before isolation would be compromised. Supporting HART Rev. 5-7 devices, MTL4850 includes auto baud-rate detection, LED indication for fault diagnosis, and onboard event log.

Original Press Release:

The MTL4850 Hart Multiplexer Gains SIL3 Rating for Functional-safety Related Loops

MTL Instruments is pleased to announce the launch of the SIL3 rated MTL4850 Hart Multiplexer. MTL is known worldwide as an intrinsic safety interface specialist, and now takes the lead in functional safety components by introducing the SIL3 rated MTL4850 Hart Multiplexer for connection to instrument loops performing safety functions up to and including Safety Integrity Level SIL3.

MTL’s multiplexer is designed to ensure that there is no effect on the analogue loops to which it is connected; multiple concurrent faults in the components that couple the MTL4850 to the analogue loops would have to be present before the isolation would be compromised. The MTL4850 HART multiplexer does not itself implement a safety function but may be applied alongside measurement and control equipment that is providing a safety function.

Unique design features make the MTL4850 suitable for use in applications where the 4/20mA instrument loops, to which it is connected, are implementing safety functions up to SIL3 and the techniques used mean that systematic faults can be prevented.

The multiplexer provides a common bridge to access HART information for the signal channels that are connected to it, This is particularly important when the multiplexer is associated with signal loops that are feeding a safety shutdown system.

MTL continues to increase its functional safety product portfolio which demonstrates its commitment to comply with IEC61508:2010. Moreover, this certification as a Functional Safety Management Company demonstrates that MTL has processes and competence to design and market products according to the international standard. Hence MTL ensures the customer has the confidence to use MTL’s products in Safety Instrumented Systems.

Further detailed information is available via www.mtl-inst.com or direct from your local MTL office.

About MTL

MTL Instruments, a business unit of Cooper Crouse-Hinds, is a world leader in the development and supply of electronic instrumentation and protection equipment for the process control and telecommunications industries. Many of the world's most critical processes are monitored, controlled or protected by MTL equipment and the Group is distinguished by the quality and reliability of its products, its global network of sales-and-support centres and its acknowledged position as a thought-leader in this high technology marketplace. With 20 dedicated sales centres in 13 countries and a further 131 MTL representatives in 69 countries, MTL's expertise in Intrinsic Safety, Industrial Networks, Surge Protection and Operator Displays/HMI is unsurpassed.

About Cooper Crouse-Hinds

Headquartered in Syracuse, N.Y., Cooper Crouse-Hinds is a subsidiary of Cooper Industries plc (NYSE: CBE) that integrates a comprehensive line of electrical and instrumentation products with expert support, industry insights and local availability, engineering safety and productivity in the most demanding industrial and commercial environments worldwide. Cooper Crouse-Hinds manufactures over 100,000 products, including conduit and cable fittings; enclosures; plugs and receptacles; industrial lighting fixtures; signals and alarms; controls and electrical apparatus; commercial outlet boxes and hubs; and electronic components and protection equipment for process control branded MTL Instruments Group. Cooper Crouse-Hinds products are sold worldwide and meet all local and international code requirements. They are used in general construction or in harsh and hazardous environments across the globe, performing to the highest standard of safety and reliability. For more information, visit www.crouse-hinds.com.

About Cooper Industries

Cooper Industries plc (NYSE: CBE) is a global electrical products manufacturer with 2011 revenues of $5.4 billion. Founded in 1833 Cooper's sustained success is attributable to a constant focus on innovation and evolving business practices, while maintaining the highest ethical standards and meeting customer needs. The Company has seven operating divisions with leading market positions and world-class products and brands, including Bussmann electrical and electronic fuses; Crouse-Hinds and CEAG explosion-proof electrical equipment; Halo and Metalux lighting fixtures; and Kyle and McGraw-Edison power systems products. With this broad range of products, Cooper is uniquely positioned for several long-term growth trends including the global infrastructure build-out, the need to improve the reliability and productivity of the electric grid, the demand for higher energy-efficient products and the need for improved electrical safety. In 2011 fifty-nine percent of total sales were to customers in the industrial and utility end-markets and forty percent of total sales were to customers outside the United States. Cooper has manufacturing facilities in 24 countries as of 2011. For more information, visit the website at www.cooperindustries.com.

For further information please contact:

Mr David Frost

Marketing Director

MTL Instruments


+44 1582 407506

Mr Paul Hartley

Product Line Manager

MTL Instruments


+44 1423 580500

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