Notes

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 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 problem.
On the main one hand, it might be that the safety or Ex characteristic values do not match, alternatively, the functional characteristics must also match your application. So, even if 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 your blog article ?Electrical circuitry for pressure sensors: when is a sensor active, and when passive??)
Therefore, you should make sure that you merely 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 เกจ์ออกซิเจนsumo have any further questions, our sales department will gladly will give you detailed application consultation.
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