Within the European Community, intrinsically safe pressure sensors may only be used in hazardous areas if they’re installed in conjunction 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 all combinations of sensor and barrier from different manufacturers fulfil this problem.
On the main one hand, it may be that the safety or Ex characteristic values do not match, however, the functional characteristics must match your application. So, even though 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? are available in your blog article ?Electrical circuitry for pressure sensors: when is really a sensor active, and when passive??)
Therefore, Embarrassing should make sure that you only 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 will give you detailed application consultation.g