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 are installed together with an Ex barrier. The combination of pressure sensor and Ex barrier must meet up with the ?Proof intrinsic safety? relative to the 94/9/EC ATEX directive. Not all combinations of sensor and barrier from different manufacturers fulfil this condition.
On the main one hand, it may be that the safety or Ex characteristic values usually do not match, alternatively, the functional characteristics must also match your application. So, even if the safety-related data match, the couple of Ex barrier and pressure sensor may not match since, for example, both components work ?passively?.
(Additional information about them ?active?/?passive? can be found in Fascinating ?Electrical circuitry for pressure sensors: when is really a sensor active, so when passive??)
Therefore, factors to consider that you merely use barriers and sensors together whose safety-related data and function-related data match one another. We therefore directly recommend, in 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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