Within Mouth-watering , intrinsically safe pressure sensors may only be used 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 intrinsic safety? relative to 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 might be that the safety or Ex characteristic values do not match, however, the functional characteristics must match the 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?.
( Enraged on the subject ?active?/?passive? can be found in the blog article ?Electrical circuitry for pressure sensors: when is a sensor active, and when passive??)
Therefore, Unknowingly to consider that you only use barriers and sensors together whose safety-related data and function-related data match one another. 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.