Within the European Community, intrinsically safe pressure sensors may only be utilized in hazardous areas if they’re installed in conjunction with an Ex barrier. The mix of pressure sensor and Ex barrier must meet the ?Proof of 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 might be that the safety or Ex characteristic values usually do not match, however, 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 about them ?active?/? Fluid ? are available in the blog article ?Electrical circuitry for pressure sensors: when is really a sensor active, so when passive??)
Therefore, you should make sure that you merely use barriers and sensors together whose safety-related data and function-related data match each other. Bloodcurdling 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 will give you detailed application consultation.g