Amp Hour meter

 
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PostPosted: Thu Dec 13, 2007 8:22 am    Post subject: Amp Hour meter Reply with quote
Hi,
I try to setup my PicoScope 3224 to meter my solar batteries charging current. The batteries is charge by a solar PWM regulator (pulse about 100 -200hz). I am measuring the current through a series resistor. How would I go about setting up the software to log the A/H?[color=blue][/color][color=blue][/color][color=blue][/color]
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PeterF
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Joined: 07 Jun 2007
Posts: 101
Location: Cambridgeshire
PostPosted: Fri Dec 14, 2007 3:22 pm    Post subject: Reply with quote
Hi,
Your series current sensing resistor must be between the negative terminal of your battery and the common ground of your system. The scope ground must be to the common ground and the scope input to the other end of the resistor. You have a 12 bit scope so the resolution will be good enough with a low value resistor (to save power). The scope can be scaled to read directly in Amps but calculated values in PicoScope or PicoLog cannot include time so if you wish to display A/Hours you will need to get the data into Excel, which can do the calculation. You can use our Excel macro which can export the data, live, into Excel.
PeterF.
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