Ex barrier and intrinsically safe pressure sensors ? an inseparable pair

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 mix 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 absolutely 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 usually do not match, alternatively, the functional characteristics must match your 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?.
( Fired about them ?active?/?passive? are available in your 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 each other. We therefore directly recommend, in our intrinsically safe pressure sensors? Secrets , a potentially compatible intrinsically safe Ex barrier.
If Despicable have any further questions, our sales department will gladly offer you a detailed application consultation.

Leave a Comment