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Judith Proctor ([personal profile] watervole) wrote2011-03-22 03:16 pm
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Measuring data

A thought from Alex_Holden.

If I had two sensors with logging (My current one doesn't have a logger), then I could use one after the inverter and one in the usual position and get some really pretty graphs.

I can't currently justify spending £70 to get a pair, but I do like the idea of being able to see both generation and consumption.

sky mostly overcast 3:20pm - generation = 480W

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[identity profile] davidwake.livejournal.com 2011-03-22 04:21 pm (UTC)(link)
How much power does the Owl use?
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[identity profile] watervole.livejournal.com 2011-03-22 04:35 pm (UTC)(link)
3 AA batteries. They'll probably last a year or so.

[identity profile] davidwake.livejournal.com 2011-03-22 04:48 pm (UTC)(link)
Get rechargable ones and top them up every midsummer's day.

Surely the other end must be connected to something to read the electricity?
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[identity profile] watervole.livejournal.com 2011-03-22 04:58 pm (UTC)(link)
THey probably are rechargeables. I didn't look inside, but that's what we normally use.

It may use batteries at the other end, but I'm not sure where that part is attached.

[identity profile] davidwake.livejournal.com 2011-03-22 05:17 pm (UTC)(link)
The write-up says 6 AA batteries, so I suspect the other unit is similarly powered. There must be some use in order to transmit the information to the portable unit.

[identity profile] alex-holden.livejournal.com 2011-03-22 05:35 pm (UTC)(link)
Yes, there are batteries in both parts. The transmitter is connected to a sensor that normally clips around one of the thick wires that goes into the meter.
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