Understand that you want to avoid "full blown", but Tektronix (nee Voltech) makes power analyzers that will probably out-last your lab. Otherwise, as you have the code-monkey on your back, not that difficult to do using a CT or shunt and 6.5 digit logger such as the Agilent 34970 and about 100 lines of Python. The big problem here is channel-to-channel latency, which would affect accuracy of power measurements, unless you are willing to integrate the rms over many cycles. Then there are the DIY solutions - recommend at least a decent Cortex M4 class micro (my preference is the NXP MK20 series); and there are many canned design solutions for this stuff, where you would 'just' add your analog front-end.
If you have some of the later Tektronix or Agilent DSOs or MSOs, get a power or math module, then all you do is suck the data out of the scope (you will still need a CT or shunt). If not Ethernet, then use GPIB. RS-232 is ok if differential pair. Labview is a poor solution where long-term stability and maintenance is important. If resultant data part of your formal TRF, be mindful that your solution can support the ISO17025 traceability stuff. Brian From: Kunde, Brian [mailto:brian_ku...@lecotc.com] Sent: Wednesday, September 12, 2018 8:25 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Recommondations for Test Equipment Please send replies directly to me if this is a group violation. In our Safety lab, we do input current tests. We currently use two handheld meters; one showing Voltage and the other Current via a current clamp. We want to replace these two meters with a single piece of test equipment that will provide live data measurements via a PC Interface. It would also be nice if it could provide power, power factor, and other such measurements. We would like it to have a hardy interface, such as Ethernet or old fashion serial port (no USB). We take these measurements in our EMC Lab where USB has a hard time surviving. Labview compatible would be nice. Since we write our own code, we will have to have access to the command set. Any recommendations? We don’t really need the features and expense of a full blown power analyzer. Does anyone make something like this? Thanks, The Other Brian - ---------------------------------------------------------------- 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>
