Within Admit , intrinsically safe pressure sensors may only be utilized in hazardous areas if they’re installed together with an Ex barrier. The combination of pressure sensor and Ex barrier must meet up with the ?Proof of intrinsic safety? in accordance with the 94/9/EC ATEX directive. Not 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 also match the application. So, even though the safety-related data match, the couple of Ex barrier and pressure sensor might not match since, for instance, both components work ?passively?.
(Additional information on the subject ?active?/?passive? are available in the blog article ?Electrical circuitry for pressure sensors: when is a sensor active, so when passive??)
Therefore, factors 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.