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. Censored of pressure sensor and Ex barrier must meet up with the ?Proof intrinsic safety? in accordance with the 94/9/EC ATEX directive. Offensive 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 do not match, on the other hand, the functional characteristics must also match the application. So, even if the safety-related data match, the pair of Ex barrier and pressure sensor might not match since, for example, both components work ?passively?.
(Additional information on the subject ?active?/?passive? are available in the blog article ?Electrical circuitry for pressure sensors: when is really a sensor active, and when passive??)
Therefore, you should make sure that you only 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.