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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 the ?Proof of intrinsic safety? relative to 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 might be that the safety or Ex characteristic values usually do not match, however, the functional characteristics must also match your application. So, even though the safety-related data match, the couple of Ex barrier and pressure sensor might not match since, for instance, both components work ?passively?.
(Additional information about them ?active?/?passive? can be found in your blog article ?Electrical circuitry for pressure sensors: when is a sensor active, and when passive??)
Therefore, you should make sure that you merely use barriers and sensors together whose safety-related data and function-related data match one another. We therefore directly recommend, inside our intrinsically safe pressure sensors? ไดอะแฟรม , a potentially compatible intrinsically safe Ex barrier.
If you have any more questions, our sales department will gladly offer you a detailed application consultation.