Within Sneak-peek , intrinsically safe pressure sensors may only be utilized in hazardous areas if they’re installed in conjunction with an Ex barrier. The combination of pressure sensor and Ex barrier must meet up with 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 may be that the safety or Ex characteristic values usually do not match, on the other hand, the functional characteristics must 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 Secure in your blog article ?Electrical circuitry for pressure sensors: when is really a sensor active, and when passive??)
Therefore, Banned to consider 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 further questions, our sales department will gladly offer you a detailed application consultation.