How about a battery powered handheld Gauss meter with an audible alarm ? (since magnetic field is proportional to source current for a wire)
If the gauss meter is not located where the susceptibility source could influence it, you could calibrate known current values versus measured gauss levels (with the gauss meter in a fixed positon) and then set the alarm accordingly. Of course this depends on whether the gauss meter range and resolution falls within the range of your current level to be monitored. See link below. https://www.trifield.com/content/dc-gaussmeter-model-gm2/ This one has an audible alarm when the field exceeds a user selectable threshold level or if the level is between a user selectable upper and lower bound. Range for this model is 0 - 20 kG with 0.01 G resolution in the 0 - 800 G range. There are other gauss meter manufacturers if you Google "gauss meter with alarm" (with quotes). Manny Barron From: Ken Javor [mailto:ken.ja...@emccompliance.com] Sent: Monday, May 30, 2016 10:58 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Handheld or portable voltmeter/ammeter with built-in and adjustable limit function with audible alarm Ken & Dieter, Thank you, but none of those really met my criteria. I'm looking for a piece of stand-alone test equipment, a multimeter, where I can set a limit and have the thing generate an audible tone (like during continuity testing) if the preset level is exceeded (or if a measured value is below the preset minimum). Datalogging is not of interest - what I need is a real-time alarm which I don't have to visually monitor. It just seems like this should exist, and would be extremely valuable for a test facility to have available, custom configurable for a wide variety of thresholds. Ken Javor Phone: (256) 650-5261 _____ From: Ken Wyatt <k...@emc-seminars.com> Reply-To: Ken Wyatt <k...@emc-seminars.com> Date: Mon, 30 May 2016 10:12:47 -0600 To: <EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] Handheld or portable voltmeter/ammeter with built-in and adjustable limit function with audible alarm Maybe one of these could work. http://www.poweringthenetwork.com/site-power-monitor/ https://www.gavazzionline.com/pdf/DIB71CB.eng.pdf https://www.microdaq.com/data-loggers/voltage-current.php www.westell.com/document/ <http://www.westell.com/document/dc-power-monitoring/?dl=1> dc-power-monitoring/?dl=1 <http://www.westell.com/document/dc-power-monitoring/?dl=1> <http://www.westell.com/document/dc-power-monitoring/?dl=1> _______________________ I'm here to help you succeed! Feel free to call or email with any questions related to EMC or EMI troubleshooting - at no obligation. I'm always happy to help! Kenneth Wyatt Wyatt Technical Services LLC 56 Aspen Dr. Woodland Park, CO 80863 Phone: (719) 310-5418 Email Me! <mailto:k...@emc-seminars.com> <mailto:k...@emc-seminars.com> | Web Site <http://www.emc-seminars.com> <http://www.emc-seminars.com> | Blog <http://design-4-emc.com/> <http://design-4-emc.com/> The EMC Blog (EDN) <http://www.edn.com/blog/The-EMC-Blog> <http://www.edn.com/blog/The-EMC-Blog> Subscribe to Newsletter <http://www.emc-seminars.com/Newsletter/Newsletter.html> <http://www.emc-seminars.com/Newsletter/Newsletter.html> Connect with me on LinkedIn <http://www.linkedin.com/in/kennethwyatt> <http://www.linkedin.com/in/kennethwyatt> On May 30, 2016, at 9:56 AM, Ken Javor <ken.ja...@emccompliance.com> wrote: Handheld or portable voltmeter/ammeter with built-in and adjustable limit function with audible alarm For an EMI test, I need to monitor direct current and set a limit above which I get an audible alarm. I don't want to constantly have to watch an ammeter/voltmeter while also operating the susceptibility equipment. I also don't want to have to connect a DVM to a PC; I want the limit setting function to be self-contained. Seems as if there ought to be such a device, but I can't find it. Doesn't have to be an ammeter per se; if it can measure dc millivolts, I can use a current shunt. Thank you, Ken Javor Phone: (256) 650-5261 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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