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jith jayandhan
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Join Date: Dec 2009
Posts: 4

I.S. Barriers vs. Isolators

02/01/2010 6:38 AM

can any one explain the diffreance between I.S barrier and isolators and theier working princpile and their types and their manufactuers
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PWSlack
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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: instrumentation

02/01/2010 6:47 AM

There is a good article in Wikipedia on electrical equipment in hazardous atmospheres. EEx i is one of a number of ways of ensuring that electrical installations are safe, though there are pitfalls for the user to be aware of. EEx i is only suitable for instrumentation-level currents and voltages.

There are dozens of barrier manufacturers. Try the MTL and the Pepperl & Fuchs (usual disclaimer) catalogues for further information.

Selection and use of this equipment requires a level of training to ensure a safe and compliant installation first time, every time. Attendance on a training course locally is therefore highly recommended.

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