|
Home > Archive > Electrical Engineering > May 2007 > Clamp-on meter sensor
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
Clamp-on meter sensor
|
|
| Rod@Hillhead 2007-05-29, 5:25 pm |
| Hi,
I have a meter that monitors electrical energy use using a clamp on
sensor. The result is transmitted wirelessly to a display. I would
like to log the usage over time but when I measure the voltage across
the clamp meter using a DMM it is zero. Is this to be expected? Is
there any other way of doing this, without buying another clamp meter?
Thanks for any help,
Rod
| |
| Charles Perry 2007-05-29, 9:25 pm |
|
"Rod@Hillhead" <remcg@tesco.net> wrote in message
news:1180472514.287634.231760@r19g2000prf.googlegroups.com...
> Hi,
> I have a meter that monitors electrical energy use using a clamp on
> sensor. The result is transmitted wirelessly to a display. I would
> like to log the usage over time but when I measure the voltage across
> the clamp meter using a DMM it is zero. Is this to be expected? Is
> there any other way of doing this, without buying another clamp meter?
> Thanks for any help,
> Rod
>
Make? Model? Give us something to work with.
Charles Perry P.E.
| |
| AL BENSER 2007-05-30, 1:25 pm |
| The clamp meter is to measure only the AC current. It can not measure
the voltage. But if you assume the voltage to be constant, you will be
within 2-5% off the correct energy calculation.
"Rod@Hillhead" <remcg@tesco.net> wrote in message
news:1180472514.287634.231760@r19g2000prf.googlegroups.com...
> Hi,
> I have a meter that monitors electrical energy use using a clamp on
> sensor. The result is transmitted wirelessly to a display. I would
> like to log the usage over time but when I measure the voltage across
> the clamp meter using a DMM it is zero. Is this to be expected? Is
> there any other way of doing this, without buying another clamp meter?
> Thanks for any help,
> Rod
>
| |
|
|
Rod@Hillhead wrote:
> Hi,
> I have a meter that monitors electrical energy use using a clamp on
> sensor. The result is transmitted wirelessly to a display. I would
> like to log the usage over time but when I measure the voltage across
> the clamp meter using a DMM it is zero. Is this to be expected? Is
> there any other way of doing this, without buying another clamp meter?
> Thanks for any help,
> Rod
Lessee. I think your question is:"Is there anyway I can turn my power
meter into a logging device having no information at all?"
The answer is YES! Computer people do useful things all the time
starting with absolutely no information about anything. To them it's a
game and they do it for fun!
So. Here's your answer. You hook up the power meter. Put the remote
display near your computer. Focus your webcam on the display. Write
decoding software to convert the display image into power values.
Write the logging software that stores, plots and evaluates those
readings and you are done! And you didn't have to buy another clamp-on
meter! Problem solved!
I'm glad I could totally solve your problem for you!
Benj
(Who notes that to REALLY "solve" the problem the way a computerist
would, I should have only given you a website address and THEN claimed
I'd "solved" your problem for you, rather than actually outlining how
to do it.)
|
|
|
|
|