Within the European Community, intrinsically safe pressure sensors may only be used 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? relative to the 94/9/EC ATEX directive. Scandalous 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 do not match, however, the functional characteristics must also match the application. So, even if the safety-related data match, the pair 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 your blog article ?Electrical circuitry for pressure sensors: when is 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. We therefore directly recommend, inside our intrinsically safe pressure sensors? Backlash , a potentially compatible intrinsically safe Ex barrier.
If you have any more questions, our sales department will gladly offer you a detailed application consultation.