Suggest you use a Keithley 6514 or 6517 Electrometer with a shielded Faraday Pail attached to its input. It is easy to make the Faraday Pail yourself. See for example page 5 of:
http://web.mit.edu/8.022/www/Handouts/lab1.pdf You can basically use any concentric conductive containers, as long as the small one nestles comfortably (electrically floating) inside the exterior one (shield). The deeper, the better. (Better shielding). I have used stainless steel chemistry beakers, stainless steel kitchen storage cannister, home-made contraptions made out of fine-mazed chicken wire and out of aluminum paper, metal kitchen pots, metal garbage cans, etc... The size of your specimen basically dictates the size of the Faraday pail. Good luck. Noel Verbiest. At 12:19 PM 3/25/2005, Xu, Catherine (EMC Engr-San Diego) wrote: Hi, my colleagues, Can anyone give me some reference on the test procedure or test equipment that can characterize the transient charge build up on a dielectric object ( such as the chair cloth )? This is for an ESD research. However, we'll need to character the instant charge instead of instant voltage level. Appreciate any input on this subject ! Catherine Xu __________________________________ EMC Engineer, Ph.D. HP ASA Division - San Diego [email protected] (858)655-4023 __________________________________ 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/listserv/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: Richard Nute: [email protected] Jim Bacher: [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/listserv/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: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
