Hi Group. This stuff is covered in the UK by BASEEFA rules, and the various areas described variously as Ex and EEx etc.
As an aside, whenever I have designed Intrisically safe equipment, I have left behind all the EEx equipment, the BASEEFA approved housings, the safety relays, and Zener barriers and so on, and simply used compressed air operated machines. These were primarily in the packaging industry filling containers with mysterious things like perfume, rubbing ointments, cough mixtures, even Gripe Water for babies, all amazingly flamable! Control logic was by fluidic logic elements (anyone here remember THOSE turkeys?). And I don't recall there being an EMC problem with that stuff either! Nor was there a problem with IEC1010. Now, there's an interesting thing... A control system which complies with the EMC directive, the Low Voltage Directive and the various Flammability regulations. Wonder if it will ever catch on? Food for thought..... :-) Chris Dupres Surrey, UK. --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
