Within the European Community, intrinsically safe pressure sensors may only be used in hazardous areas if they are installed together with an Ex barrier. Professional of pressure sensor and Ex barrier must meet the ?Proof 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, on the other hand, 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 instance, both components work ?passively?.
(Additional information on the subject ?active?/?passive? are available in the blog article ?Electrical circuitry for pressure sensors: when is a sensor active, and when passive??)
Therefore, factors to consider 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? Opportunities , a potentially compatible intrinsically safe Ex barrier.
If you have any further questions, our sales department will gladly will give you detailed application consultation.