Ex barrier and intrinsically safe pressure sensors ? an inseparable pair

Within the European Community, intrinsically safe pressure sensors may only be used in hazardous areas if they’re installed together with an Ex barrier. The mix of pressure sensor and Ex barrier must meet up with the ?Proof 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 main one hand, it could 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 pair 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 เกจวัดแรงดัน ?Electrical circuitry for pressure sensors: when is really 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 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 more questions, our sales department will gladly offer you a detailed application consultation.