Ex barrier and intrinsically safe pressure sensors ? an inseparable pair

Within the European Community, intrinsically safe pressure sensors may only be utilized in hazardous areas if they’re installed together with an Ex barrier. The mix of pressure sensor and Ex barrier must meet the ? Succeed of intrinsic safety? in accordance with the 94/9/EC ATEX directive. Not absolutely all combinations of sensor and barrier from different manufacturers fulfil this condition.
On the one hand, it may be that the safety or Ex characteristic values do not match, on the other hand, the functional characteristics must also match your application. So, even if the safety-related data match, the pair of Ex barrier and pressure sensor may not match since, for instance, both components work ?passively?.
( Reflective about them ?active?/?passive? are available in the blog article ?Electrical circuitry for pressure sensors: when is a sensor active, so when passive??)
Therefore, you should make sure that you merely use barriers and sensors together whose safety-related data and function-related data match each other. We therefore directly recommend, inside our intrinsically safe pressure sensors? data sheets, a potentially compatible intrinsically safe Ex barrier.
If you have any further questions, our sales department will gladly will give you detailed application consultation.

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