Hi Mike, the EN's dont usually mention much about calibration. I don't recall now any EMC standards saying that, but e.g. EN 60950-1 says how to calibrate the touch current measuring device. With regards to accreditation, the lab can assign the calibration interval as they wish but as it needs to be justified it would be very unusual to ignore manufacturer's recommended calibration interval. If this answers your question... Regards, Ari
_____ From: [email protected] [mailto:[email protected]] On Behalf Of ext Mike Hopkins Sent: 16. maaliskuuta 2006 23:32 To: [email protected] Cc: Tricia Rakiey Subject: Calibration of test equipment It's my understanding that the MRA's require that test instruments used for compliance to European Norms be calibrated by an accredited lab --- in the US, NVLAP, A2LA, and (another?). As a manfacturer, we recommend our products be calibrated yearly. ISO 17025 includes clause 5.10.4.4, which states: "The calibration certificate (or calibration lable) shall not contain any recommendation on the calibration interval except where this has been agreed with the customer. This requirement may be superseded by legal regulations." ISO 17025 is, of course, the basis of accreditation to NVLAP or A2LA and others... My question to the group is: Is there some requirement under the MRA's or European Norms that states equipment must be calibrated periodically, and is "periodically" defined?? It seems to me allowing the customer to decide on when calibration is due (per ISO) can lead to no requirement for calibrations at all, which in turn, puts the whole accreditation issue in question….. I find this hard to believe, but I haven't identified a paragraph makes it clear…. Best Regards, Michael Hopkins Manager, Customer Technical Center Process Instruments Division Thermo Electron Corporation One Lowell Research Center Lowell, MA 01852 Tel: +1 978 275 0800 ext. 334 Mobile: +1 603 765 3736 [email protected] <file://www.thermo.com/esd> www.thermo.com/esd - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
