Within the European Community, intrinsically safe pressure sensors may only be used in hazardous areas if they are installed in conjunction with an Ex barrier. The combination of pressure sensor and Ex barrier must meet the ?Proof intrinsic safety? relative to the 94/9/EC ATEX directive. Not all combinations 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 usually do not match, alternatively, 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?.
(Additional information on the subject ?active?/? Blunder ? are available in the blog article ?Electrical circuitry for pressure sensors: when is really a sensor active, and when passive??)
Therefore, Priceless should make sure that you merely 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? Sabotaging , a potentially compatible intrinsically safe Ex barrier.
If you have any more questions, our sales department will gladly offer you a detailed application consultation.