Kevin, Here is what I use. A 100 Amp shunt with big wire connections to go in series with the battery leads, and small set of screw terminals to connect to the sensing circuit. The one below generates 100 MV of voltage at 100 amps of battery charge.
http://store.solar-electric.com/mka-100-100.html For a circuit we use the one that Ken has provided on page 13 in his Arcom RC-210 manual, since we mainly use RC-210 controllers, but the same circuit will work with any controller. All we are doing is using a OP-Amp for a voltage multiplier. Then you adjust your meter face accordingly in the controller configuration. http://www.arcomcontrollers.com/ftp/pub/manuals/rc2103_0ahardware.pdf To calculate the values for the resistors in the op amp circuit so that I can get the desired voltage change where 100 mv full output from the shunt equals about 4 volts, I use this handy little tool. http://www.daycounter.com/Calculators/Op-Amp/Op-Amp-Voltage-Calculator.phtml We sometimes will do two of these charging indication circuits, so that we can monitor solar and wind charge rates independently. Hope this helps. Joe - WA7JAW --- In [email protected], "Gmail - Kevin, Natalia, Stacey & Rochelle" <spar...@...> wrote: > > Hi All, > > I am in need of a circuit to read amps to my controller. > Want to be able to read the current being used at the repeater site as well > as the charging current to the batteries. > > I am using a RLC-3 controller. > > I have a current meter in-line at the site, but a reference from the repeater > would be a great help. > > Thanks > > Kevin, ZL1KFM. >
