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Kai Klaas
05/29/12 05:40
Read: 413 times
Germany


 
#187575 - But there's more to do...
Responding to: Ap Charles'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      AP Charles      05/24/12 02:13      
   EX question ?      Kai Klaas      05/24/12 06:04      
      Manufacturer      AP Charles      05/24/12 07:53      
         Never tested? So not certified?      Per Westermark      05/24/12 09:08      
            Is it undesirable      AP Charles      05/24/12 10:05      
               As far as I know...      Kai Klaas      05/24/12 12:37      
                  No No..      AP Charles      05/24/12 13:32      
                     I agree...      Kai Klaas      05/25/12 10:39      
                        safety      AP Charles      05/28/12 02:01      
                           Yes and no...      Kai Klaas      05/28/12 16:48      
                              Looking for Pre-Boxed Solutions      Michael Karas      05/28/12 18:02      
                                 pre-boxed solutions .. no      AP Charles      05/28/12 23:53      
                                    But there's more to do...      Kai Klaas      05/29/12 05:40      
                                       not familiar with 'EX'      Erik Malund      05/29/12 06:41      
                                       Yes      AP Charles      05/29/12 07:25      

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