watt hour meter

[jeffbirkle]

Has anyone built a watt hour meter for the DIYer?

J

[tanner0441]

Hi

Look on EBay I paid about £12 for a DIN rail mounting KWh meter, digital incrementing display down to 0.1 KWh.

Brian

[wooferhound]

You could try the Kill-A-Watt meter

http://www.supermediastore.com/kilwateldet1.html?WT.mc_id=cjtext

[bob g]

if you are running at 60hz AC the GE digital residential kwatt meters

can be set to monitor watt/hrs as well as about 200 other parameters

and they are cheap on ebay

you just need a meter base to mount it in.

the watt/hr resolution is down to about +- 3 watt/hrs

there is a very simple hack to get them to read out the watt/hrs

and they read to .1 watt/hr resolution,but scan to where the closest i can get is the +- 3 watt/hrs.

don't know if that will work for what you are after, but is a good option if 120/240

60hz is the watt/hrs you want to monitor.

bob g

[jeffbirkle]

Hi all.

Sorry I should have specified a watt hour meter for DC current.

1 for my Wind turbine 1 for my Water turbines and 1 for Solar.

Thanx

J

[elt]

IIRC, one of the Dan's had purchased a meter that sounds like what you're looking for... ah, yes, here's the post:

http://www.fieldlines.com/story/2007/7/20/215436/173

Look for the "Doc Wattson".

Hope that helps,

- Ed.

[kurt]

http://www.forcefieldmagnets.com/catalog/product_info.php?cPath=24&products_id=190&osCsid=pa
0p99ovjf1cqftqjbc5mha2p2

[JSNH]

http://www.hialeahmeter.com/siphwame.html

The above link go to a company that remans watthour meters. The cost is pretty low.

[SparWeb]

There are some PIC (Programmable Integrated Circuit) types that you can build yourself.  Try www.thebackshed.com   I think they feature a project, with schematic.