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Ex e system or alternate

Ex e system or alternate

Ex e system or alternate


I am new to designing electrical systems in ATEX rated environments and am looking for some suggestions. I am building a system with an Ex e rated terminal box, and similar rated components. The components are conduit hubs, elbows and nipples all rated to Ex e/d. The conduit will run between sensors and a terminal box. The instrumentation that is going to be in the system is a 4-20 mA vibration sensor/transmitter (external to the terminal box) and Thermocouples. The question I have is, the two pieces of instrumentation are rated for Ex d applications, the box is rated to Ex e, and the piping and fittings are dual Ex e/d. Will my sensors be ok in this system under these ratings?. The customer that the system should be rated to Ex e or d, IIC T4. Is it ok to mix and match like this?

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