Intrinsically safe means the device will not ignite a specified explosive gas mixture (often methane-air). Some agencies require a two-fault evaluation. Usage is for equipment in gassy mines, inside gas pumps, etc. or for places where explosive mixtures are possible: the pit in a auto repair shop, near gas storage, around flammable anesthetics, etc. There are several different definitions and several different explosive gas levels. Generally requires carefully limited current, voltage, temperature, inductance. The customer needs to specify which is needed. ---------- From: Mel Pedersen To: 'emc-pstc' Subject: intrinsic safety requirements List-Post: [email protected] Date: Monday, July 14, 1997 4:56AM
I have a customer asking if our parts meet European "intrinsic safety requirements". What in the world does this refer to? Does it refer to standards specified in the OJ, or what? Does it have anything to do with the Low Voltage Directive? Any other directive? Or does it refer to devices operating at such low power that they are "intrinsically safe"? Thank you for any input. Mel Pedersen Midcom, Inc. Homologations Engineer Phone: (605) 882-8535 [email protected] Fax: (605) 886-6752
