Reading electricity meter led

Post by **bjorn** » Wed Nov 29, 2006 9:06 pm

Do you have, and would you like to share the schematics for reading the electricity meter blinking LED with the 1-wire counter device (DS2423). I saw a schematic in this forum utilizating a reflective LED for spinning disk meters. What changes are needed for the blinking LED?

I am very inexperienced with electronics, but know the basics. (Software is what I do).

Post by **bjorn** » Wed Nov 29, 2006 11:32 pm

I found the "How it is done" page at http://www.bwired.nl/stroom.asp. I will have a look at that.

Post by **Bwired** » Wed Nov 29, 2006 11:41 pm

oke, it's also here http://www.domoticaforum.eu/topic.asp?TOPIC_ID=179
Regards Pieter

Post by **Bwired** » Thu Nov 30, 2006 8:01 pm

Bjorn,
See this topic for the new expected wireless energy monitoring solution from www.rfxcom.com also a possibility
http://www.domoticaforum.eu/topic.asp?TOPIC_ID=174

Post by **Digit** » Fri Dec 01, 2006 12:28 am

I don't know how Finnish fuse cabinets look like, but another option could be using a DIN-rail mountable KWh-meter with S0-interface, like this:

http://www.eltako.com/dwl/zaehler_e_typ ... ternet.pdf

(Yes, that's dutch you're reading there...)

The S0-interface can be used as input for a (1-Wire) counter like the DS2423.

Regards,
Digit.

Post by **Willem4ever** » Sun Dec 17, 2006 1:44 am

Hi Digit,

Cool stuff, affordable and for a little bit more it is callibrated ( E 140) precission is class 1, which is I believe indentical to the meter supplied by your local utility company. I think this could be a good alternative instead of counting led flashes.

Cheers, Willem.

Post by **bjorn** » Sun Dec 17, 2006 11:28 pm

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Digit
 I don't know how Finnish fuse cabinets look like, but another option could be using a DIN-rail mountable KWh-meter with S0-interface, like this:
<hr height="1" noshade id="quote"></blockquote id="quote">

Hi Digit, thanks for your reply!

I actually have an S0 output on my meter. I don't really know where the connector is and I don't dare to open the box since it is a property of the electricity company. I'll ask my electrician if I can access the output without opening the box too much (it's sealed).

Another thing is that the resolution is much lower on the S0 than the LED's resolution. The S0 gives 500 impulses/kWh and the led 10000 impulses/kWh. I probably don't need that kind of resolution, but still it would be nicer with the higher resolution.

(The meter is an Enermet E420, http://www.enermet.com/en/metering/fact ... _Sheet.pdf. I can't find any details on the output locations.)

I found some simple schematics that seems to work for reading the LED. I haven't connected it the 1-wire counter, but I believe it will work fine.

Post by **Floppe** » Fri Apr 24, 2009 11:10 am

Hello bjorn.

Did you use S0 or the LED when reading watt usage of your Emernet E420? I live in Vasa and have the exact same meter here.