Within Sensual , 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 the ?Proof 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 do not match, alternatively, the functional characteristics must match your application. So, even if the safety-related data match, the couple of Ex barrier and pressure sensor might not match since, for example, both components work ?passively?.
(Additional information about them ?active?/?passive? are available in your blog article ?Electrical circuitry for pressure sensors: when is really 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, in 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 offer you a detailed application consultation.