Hi,
Here are a few pictures of todays score.
I found a General Technologies CM100 AC/DC Low Current Clamp Meter in like new condition at a Garage Sale (Trunk sale or Car boot sale) for $25.00 Canadian ($20.00 USD).
Link to the manufacturers site:
http://www.gtc.ca/Products/CM100.htmlThis appears to be the same meter as the AEMC CM605.
Link to the AEMC site:
https://www.test-meter.co.uk/aemc-cm605-low-current-dc-clamp-meter/PicturesThe unit came complete with leads, instruction booklet and soft case (not shown):
TestingI am lucky enough to a have Fluke meter calibrator, 5101B and the 5220A Transconductance Amplifier. This setup is perfect for testing these meters:
Ohms RangeThe meter is strange in that it has a single ohms range with a full scale of 100k
![Ohms \$\Omega\$](https://www.eevblog.com/forum/Smileys/default/omega.gif)
. It includes a continuity buzzer, but it beeps at several k
![Ohms \$\Omega\$](https://www.eevblog.com/forum/Smileys/default/omega.gif)
and below. The Ohms range does not auto range.
Voltage Range AC and DCSimilar to the Ohms function, there is a single range 0-600V for AC and DC volts.
There is poor resolution for low voltages.
Here is the 10V reading:
![](https://www.eevblog.com/forum/testgear/list-your-test-equipment-score-here!/?action=dlattach;attach=358299;image)
100V reading:
DC Current Clamp This is the reason that I bought the meter, the high resolution DC clamp meter. The meter can resolve 1mA. I found the meter was sensitive to orientation, probably the earth's magnetic field. Moving the meter caused the reading to change by +/- 6mA after zeroing. Not too bad, but you need to aware of this.
10mA Reading:
![](https://www.eevblog.com/forum/testgear/list-your-test-equipment-score-here!/?action=dlattach;attach=358303;image)
1A Reading:
![](https://www.eevblog.com/forum/testgear/list-your-test-equipment-score-here!/?action=dlattach;attach=358305;image)
10A Reading:
ConclusionsThe DC Clamp meter, the reason I bought the meter, is very good. The other functions are a little disappointing.
For $25.00 CDN it was a bargain.
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/grin.gif)
Regards,
Jay_Diddy_B