Within Valor , intrinsically safe pressure sensors may only be utilized in hazardous areas if they are installed in conjunction with an Ex barrier. The mix 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 one hand, it could be that the safety or Ex characteristic values do not match, on the other hand, the functional characteristics must match the application. So, even if the safety-related data match, the couple 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 ? Largest for pressure sensors: when is a sensor active, so 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. Soar 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 offer you a detailed application consultation.