Hello Wendy, We have got a very cheap digital temperature/humidity meter that was bought for only a few Euros. It has a memory function that records the maximum and minimum values. This memory function can be reset, for example, at the start of each day's testing. This gives us the temperature and humidity range for that day. However, in my experience, ESD testing does not take very long. Therefore I think that it is adequate to just note the temperature and humidity at the start of the test, and then check the values after an hour, if the testing is still going. Jon Larkin Cranage EMC & Safety ----- Original Message ----- From: Wendy <mailto:[email protected]> To: [email protected] Sent: Tuesday, June 06, 2006 4:36 AM Subject: Temperature Humidity Pressure Recorder in ESD room
Dear Group, Is it necessary to have a recorder (for 24hr/7day/31days) for temperature/humidity/pressure in the ESD room? I cant find this stated anywhere in the 61000-4-2 standard. I have a thermohygrometer that only displays the temperature/humidity but does not record. Is this sufficient? If not, can anybody recommend me a reliable recorder? We have 2 Omega CTH89 but the pen arm was not working and hence could no longer record. And the repair cost is high! (FYI I do not use a barometer because my country’s pressure does not vary too much and is always within that required by the standard). Regards, Wendy Nya - ---------------------------------------------------------------- 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
