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'AW: [EE] Optical pickups for utility wattmeters'
2008\03\11@032404 by Thomas Lehmann

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Hello Bob,

please look here:

http://www.elv.de/output/controller.aspx?cid=74&detail=10&detail2=15910

which is a complete system for energy-measurement at home with a
rf-transmitter and a receiver. It is also possible to get graphs of the
energy consumption on a pc.

The optical sensor with rf-transmitter is also separately available for
39.95 Euro.

Hope this helps.
Regards
Thomas

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Von: spam_OUTpiclist-bouncesTakeThisOuTspammit.edu [.....piclist-bouncesKILLspamspam@spam@mit.edu] Im Auftrag von
Bob Blick
Gesendet: Montag, 10. März 2008 23:53
An: piclistspamKILLspammit.edu
Betreff: [EE] Optical pickups for utility wattmeters

I've heard of optical pickups you can attach to the wattmeter on your
house. But I can't seem to find them, even using all the search engine
spells I know of. Any pointers?

Thanks.

Cheerful regards,

Bob
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 Bob Blick
 .....bobblickKILLspamspam.....ftml.net

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2008\03\11@131514 by Bob Blick

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Hi Thomas,

Thanks for the link. I can't tell from their description what type of
meter it will sense. Mine has a spinning metal disk with a black stripe
on it. I think it would be quite challenging to sense reliably. It would
certainly be worth 39 Euro for something that did it well.

Cheerful regards,

Bob

On Tue, 11 Mar 2008 08:23:46 +0100, "Thomas Lehmann" <EraseMEth-lehspam_OUTspamTakeThisOuTweb.de>
said:
{Quote hidden}

> -

2008\03\11@161615 by Thomas Lehmann

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Hello Bob,

here is another link with a picture of a gasometer type sensor. It is
sensitive enough to detect the odometer color changes in the gasometer (The
zero is red, 1 - 9 is black). Afaik they have no picture of the electrical
meter type, but I have such a system in use here in my home. I think you
have the same type of power-meter which is based on a ferraris-motor.

Here a short description of the sensor assembly:
The houseing of the sensor is approx. 44 x 30 x 15 millimeters.
On the backside there are a receiving and a transmitting IR-led.
It is mounted with a double sided adhesive tape on the glas of the power
meter. There is also a red led on the sensor (not visible in the picture)
which shows each cross of the (in my case) red mark of the aluminium disc.
The sensor is named as EM 1000-IR.

The sensor itself is powered with a separate wall-wart power supply in the
range of 7 - 15 Vdc. The max. current consumption is 40 mA.
The sensor comes with a cable (approx. 1,20 meters long) that ends in a
western plug. This is connected to the rf-transmitter which is also powered
via the cable.

On the right side of the page there are the operating instructions as *.pdf
(in german) which contains more pictures. The pc-software is also ready for
downloading.

I have also a separate receiver with memory as a data-logger for the pc.
Afaik the system is able to support up to 4 different sensors.

The system helps us to identify the actual electrical power consumption of
the house and the power consumption of each electrical part. It helps a lot
for saving electrical energy.

Regards Thomas







I've heard of optical pickups you can attach to the wattmeter on your
house. But I can't seem to find them, even using all the search engine
spells I know of. Any pointers?

Thanks.

Cheerful regards,

Bob
--
 Bob Blick
 spamBeGonebobblickspamBeGonespamftml.net

--
http://www.fastmail.fm - A no graphics, no pop-ups email service

2008\03\11@230623 by Gaston Gagnon

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Hi Thomas,
Have you forgotten the link?
Gaston

Thomas Lehmann wrote:
{Quote hidden}

2008\03\11@233900 by Dr Skip

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The yogurt cup/laser shouldn't cause any problem. It's obvious it doesn't alter
the meter. However, today they just swapped mine out for a digital one (LCD
display) that can be read from the home office. A whole 'nuther set of
opportunities... ;)

2008\03\12@005524 by David VanHorn

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On Tue, Mar 11, 2008 at 11:38 PM, Dr Skip <TakeThisOuTdrskipEraseMEspamspam_OUTgmail.com> wrote:
> The yogurt cup/laser shouldn't cause any problem. It's obvious it doesn't alter
> the meter. However, today they just swapped mine out for a digital one (LCD
> display) that can be read from the home office. A whole 'nuther set of
> opportunities... ;)

You and I know that, but the electric co may take a different view.

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