| Author |
Watt Meter to consumer board?
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| Declan McEvoy 2005-08-30, 11:21 am |
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Thanks for all the postings & I'm busy with looking up the various links and
advice particularly with the Data Acq boards.
As a tail end snippet (& sorry to drag the thing a little)...there are two
options that I am considering trying, one with Data Acquisition and one
without.
In either event, at the end of the day I still wish to be able to read what
the watt consumption is in real time. If I don't go the data acquisition
road then is it just a matter of installing a "Watt Meter" on the consumer
board? Given that we use 220 Volts (50Hz) and that the "protection" circuit
breaker is rated for 63 amps then the meter must be able to read up to 63 x
220 = about 14 Kw as a maximum.
Would a device like this be easily got, preferrably with a digital readout
in watts whereby a consumer could look at it it and see at any point in time
how many watts his/her house is using.
Thanks Again
Declan
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| Dave Houston 2005-08-30, 12:21 pm |
| http://www.energymonitor.com
You'll need to verify that it can handle 50Hz and you would have to replace
the 120:12V power supply with a 220:12V version.
There may be similar devices available in Europe.
"Declan McEvoy" <ngacs@eircom.net> wrote:
>
>Thanks for all the postings & I'm busy with looking up the various links and
>advice particularly with the Data Acq boards.
>
>
>As a tail end snippet (& sorry to drag the thing a little)...there are two
>options that I am considering trying, one with Data Acquisition and one
>without.
>
>In either event, at the end of the day I still wish to be able to read what
>the watt consumption is in real time. If I don't go the data acquisition
>road then is it just a matter of installing a "Watt Meter" on the consumer
>board? Given that we use 220 Volts (50Hz) and that the "protection" circuit
>breaker is rated for 63 amps then the meter must be able to read up to 63 x
>220 = about 14 Kw as a maximum.
>
>Would a device like this be easily got, preferrably with a digital readout
>in watts whereby a consumer could look at it it and see at any point in time
>how many watts his/her house is using.
>
>Thanks Again
>
>
>Declan
>
| |
| Dave Houston 2005-08-30, 1:21 pm |
| http://www.brandelectronics.com
They have models with PC and web interfaces. They tend to be costly and
don't do so well on _very_ low loads.
"Declan McEvoy" <ngacs@eircom.net> wrote:
>
>Thanks for all the postings & I'm busy with looking up the various links and
>advice particularly with the Data Acq boards.
>
>
>As a tail end snippet (& sorry to drag the thing a little)...there are two
>options that I am considering trying, one with Data Acquisition and one
>without.
>
>In either event, at the end of the day I still wish to be able to read what
>the watt consumption is in real time. If I don't go the data acquisition
>road then is it just a matter of installing a "Watt Meter" on the consumer
>board? Given that we use 220 Volts (50Hz) and that the "protection" circuit
>breaker is rated for 63 amps then the meter must be able to read up to 63 x
>220 = about 14 Kw as a maximum.
>
>Would a device like this be easily got, preferrably with a digital readout
>in watts whereby a consumer could look at it it and see at any point in time
>how many watts his/her house is using.
>
>Thanks Again
>
>
>Declan
>
| |
| Declan McEvoy 2005-08-31, 5:21 am |
| Dave,
That is a great device. It seems is very simple to use and install and has
many "Predictable" functions such as what will the next electricity bill
amount to. It seems like there is a European or non-U.S. version. This is
wahat they say on the website...
The Electric Usage Monitor installs easily on the electric breaker panel
(110/220V) box. Users simply install the unit, set the rate and press the
reset button to start measuring electric consumption in kilowatt hours
(kWh).
The Electric Usage Monitor is purchased primarily by homeowners, renters and
apartment owners and by U.S. utility companies, electrical contractors, air
conditioner contractors, and energy professionals. An international version
also exists for clients outside of the U.S.
Declan
"Dave Houston" <nobody@whocares.com> wrote in message
news:43146e29.88685846@nntp.fuse.net...
> http://www.energymonitor.com
>
> You'll need to verify that it can handle 50Hz and you would have to
replace
> the 120:12V power supply with a 220:12V version.
>
> There may be similar devices available in Europe.
>
> "Declan McEvoy" <ngacs@eircom.net> wrote:
>
and[color=darkred]
two[color=darkred]
what[color=darkred]
consumer[color=darkred]
circuit[color=darkred]
x[color=darkred]
readout[color=darkred]
time[color=darkred]
>
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| Declan McEvoy 2005-08-31, 9:21 am |
| Here's a very interesting product capable of data logging and 220 VAC @50 hz
and is cheap too. However it seems like it is designed to monitor one
appliance only rather than Whole House.
https://www.doubleed.com/secure.html
Declan
"Declan McEvoy" <ngacs@eircom.net> wrote in message
news:3vZQe.4713$R5.559@news.indigo.ie...
>
> Thanks for all the postings & I'm busy with looking up the various links
and
> advice particularly with the Data Acq boards.
>
>
> As a tail end snippet (& sorry to drag the thing a little)...there are two
> options that I am considering trying, one with Data Acquisition and one
> without.
>
> In either event, at the end of the day I still wish to be able to read
what
> the watt consumption is in real time. If I don't go the data acquisition
> road then is it just a matter of installing a "Watt Meter" on the consumer
> board? Given that we use 220 Volts (50Hz) and that the "protection"
circuit
> breaker is rated for 63 amps then the meter must be able to read up to 63
x
> 220 = about 14 Kw as a maximum.
>
> Would a device like this be easily got, preferrably with a digital readout
> in watts whereby a consumer could look at it it and see at any point in
time
> how many watts his/her house is using.
>
> Thanks Again
>
>
> Declan
>
>
| |
| Jerry Avins 2005-08-31, 12:21 pm |
| Declan McEvoy wrote:
> Here's a very interesting product capable of data logging and 220 VAC @50 hz
> and is cheap too. However it seems like it is designed to monitor one
> appliance only rather than Whole House.
>
> https://www.doubleed.com/secure.html
I wouldn't advocate using it with a shunt, but it ought to be easy
enough to add a current transformer. To wind your own, determine the
needed full-scale secondary voltage -- it will be millivolts at most --
and figure .25V/turn/in^2 of core. Make the turns ratio whatever you
need. You can assemble the core around the mains conductor is a single
primary turn will do (and it should).
Jerry
--
Engineering is the art of making what you want from things you can get.
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
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| Dave Houston 2005-08-31, 1:21 pm |
| I think you'll have to go with one of Brand Electronics devices to find one
that is whole house and has a serial interface. I gave the URL earlier. They
start at about twice the cost of the Watts Up device.
"Declan McEvoy" <ngacs@eircom.net> wrote:
>Here's a very interesting product capable of data logging and 220 VAC @50 hz
>and is cheap too. However it seems like it is designed to monitor one
>appliance only rather than Whole House.
>
>https://www.doubleed.com/secure.html
>
>Declan
>
>
>"Declan McEvoy" <ngacs@eircom.net> wrote in message
>news:3vZQe.4713$R5.559@news.indigo.ie...
>and
>what
>circuit
>x
>time
>
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| Declan McEvoy 2005-08-31, 3:21 pm |
|
"Dave Houston" <nobody@whocares.com> wrote in message
news:4317cd3a.177958611@nntp.fuse.net...
> I think you'll have to go with one of Brand Electronics devices to find
one
> that is whole house and has a serial interface. I gave the URL earlier.
They
> start at about twice the cost of the Watts Up device.
>
I think you are right Dave. The link you gave (
http://www.energymonitor.com ) certainly does the business for a few dollars
extra. Approx $200 It comes with split coils for an extra few dollars
meaning the wiring does not have to be undone to get the coils on as the
coils themselves split and can be re-assembled on the wiring.
Declan
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