Jason, Following up William's comment, here's an eGauge with battery voltage monitoring: http://egauge2093.egaug.es/
De-select all the register choices at the bottom of the graph except for "Battery Voltage". The y-scale is in Watts but it's really V-DC; the folks at eGauge are working on that. It fits the bill for what you described: no computer required, as the eGuage is its own web server, but there's an issue here: the eGauge and HomePlug require at least 85V. If there is any AC on-site (how is the modem/router powered?), use that to power the eGauge device and get it the internet connection as well. The benefit of the eGauge is that you get load monitoring as well. -Phil On Thu, May 24, 2012 at 6:01 AM, Jason Szumlanski <ja...@fafcosolar.com>wrote: > This customer wants a standalone solution without a computer (direct LAN > connection). There is no inverter - that was my first thought when he > called... The pentametric sounds like a possible solution - I'll look into > that. Thanks for the info! > > Jason Szumlanski > Fafco Solar > > > > > On Wed, May 23, 2012 at 3:35 PM, Dan Fink <danbo...@gmail.com> wrote: > >> Hi Jason; >> >> This is a big interest of mine also, due to many extremely remote sites >> with PV installations. Though am more int he market for a deployable >> voltage monitor where the client can send me data upon their arrival at >> camp each spring, so i can see what the systems were doing all winter with >> nobody around but bears, wolves and wolverines. >> >> There are numerous ways to go about this; here would be my considerations: >> >> ~ Is there an integrated system monitor in place already? As in Outback >> FlexnetDC, and the Xantrex and Magnum equivilants? If so, much of your work >> has been done for you. should be quite easy. >> ~ Is there an external monitor like a trimetric or pentametric? The >> trimetric would require a computer on all the time (but that could be a >> tiny linux thing with no display, just and SD card etc). The pentametric >> can be ordered with an LAN interface so that only the internet and LAN/wifi >> need be turned on, not a computer; >> ~ You can talk to Jim Jarvis at APRS World. They have tons of >> logging/monitoring options they can build for you with integrated >> LAN/internet monitoring etc. >> >> For this year, i am going with some USB pen drive voltage monitors i can >> deploy on the last day of human occupation at these camps (november 1) and >> retrieve data when people arrive June 1. The problem is zero sunlight for 2 >> months of winter (high latitude, in a valley in the Skeena Mountain Range) >> However I think my future may be with Arduino. Not very hard to tell the >> arduino computer: >> >> >> >> -- >> Dan Fink, >> Executive Director; >> Otherpower >> Buckville Energy Consulting >> Buckville Publications LLC >> NABCEP / IREC accredited Continuing Education Providers >> 970.672.4342 (voicemail) >> >> >> On Wed, May 23, 2012 at 1:06 PM, Jason Szumlanski >> <ja...@fafcosolar.com>wrote: >> >>> I have a customer interested in monitoring a 48V battery bank's voltage >>> via the Internet. This is a DC only system. He just needs basic real-time >>> and historical voltage recording without any bells and whistles. Any cost >>> effective ideas? >>> >>> Jason Szumlanski >>> Fafco Solar >>> >> >> >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
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