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???
05/29/12 11:40
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#187575 - But there's more to do...
Responding to: ???'s previous message
Ap said:
..., If you see EX designs / application notes the floating voltages(+ve or-ve) in Hazardous Area at sensor poin are tied to PE through suitable resistor (not strictly prohibitive).

But EX means more than only this potential equalisation. There's is also this issue of inherently safe power supply of sensor. You cannot just simply add a cap and a resistor and by this make a non EX sensor an EX sensor. Unfortunately there's much more to fullfill and to comply with.

Kai Klaas

List of 15 messages in thread
TopicAuthorDate
Sensor installing            01/01/70 00:00      
   EX question ?            01/01/70 00:00      
      Manufacturer            01/01/70 00:00      
         Never tested? So not certified?            01/01/70 00:00      
            Is it undesirable            01/01/70 00:00      
               As far as I know...            01/01/70 00:00      
                  No No..            01/01/70 00:00      
                     I agree...            01/01/70 00:00      
                        safety            01/01/70 00:00      
                           Yes and no...            01/01/70 00:00      
                              Looking for Pre-Boxed Solutions            01/01/70 00:00      
                                 pre-boxed solutions .. no            01/01/70 00:00      
                                    But there's more to do...            01/01/70 00:00      
                                       not familiar with 'EX'            01/01/70 00:00      
                                       Yes            01/01/70 00:00      

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