Will admit to having done this stuff with using microcontrollers and discrete sequential data channels and of sufficient sampling speed, but am subject to frequent bouts of idiocy. And this was for process control, and thus not a Type Test. Also, note that there is a difference in technique and equipment between power loggers and an analytical instrument.
Best done with an instrument intended for this measurement; that is 'power analyzers'. Typically found on shelves at Keysite, Tektronix (nee Voltech), Ametek, Chroma, etc. And many Tek and keysite DSOs have a 'plug-in' for doing power measurements. All of this instrument-grade stuff can easily handle external sensors. Brian -----Original Message----- From: Amund Westin [mailto:am...@westin-emission.no] Sent: Monday, February 12, 2018 1:05 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Current measurement If you want to calculate the consumed power (W) in a 1-phase AC circuit, you can use a current clamp-on device to measure the current in one lead/wire and multiply with the applied voltage. But with such a current clamp on device, to we measure the apparent power (VA) or the real power (W)? Best regards Amund - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
