Author Topic: DC clamp meters? Any thoughts about them?  (Read 3804 times)

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Offline BiOzZ

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DC clamp meters? Any thoughts about them?
« on: April 12, 2013, 06:29:28 pm »
I was concidering getting a DC clamp meter like this one here http://www.amazon.com/gp/product/B001TCWL1E/ref=s9_psimh_gw_p60_d0_i4?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=1FQ9ETXKMDH3FAG64TJ6&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846

i would use it just for inaccurate small measurements and relative accuracy measurements above 5 amps (the best DMM i have goes to 10amp if i want to break the circuit)

whats the performance of these? how good are they? how stable are these?
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Offline Wytnucls

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Re: DC clamp meters? Any thoughts about them?
« Reply #1 on: April 12, 2013, 06:45:43 pm »
 

Offline Smokey

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Re: DC clamp meters? Any thoughts about them?
« Reply #2 on: April 12, 2013, 07:03:52 pm »
These appear to be the full specs from the mfg:
http://www.gtc.ca/EN/CM100_EN.html

I don't know anything about that particular brand or model current clamp, but looking at their product page we can add them to the list of people rebadging Brymen multimeters :)
http://www.gtc.ca/EN/CT8030_EN.html
 

Offline BiOzZ

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Re: DC clamp meters? Any thoughts about them?
« Reply #3 on: April 12, 2013, 07:23:45 pm »
after watching the video i am pleased and have purchased it!
thanks guys!
My one regret in life is learning to speak English on the internet ...
 

Offline smashedProton

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Re: DC clamp meters? Any thoughts about them?
« Reply #4 on: April 12, 2013, 07:30:10 pm »
What are you using the meter for that would draw so much current?  I'm curious!
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Invention, my dear friends, is 93% perspiration, 6% electricity, 4% evaporation, and 2% butterscotch ripple.
 

Offline Wytnucls

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Re: DC clamp meters? Any thoughts about them?
« Reply #5 on: April 12, 2013, 07:36:09 pm »
This particular clamp meter is probably made to order by C.E.M, with the specs required by GTC.
 

Offline BiOzZ

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Re: DC clamp meters? Any thoughts about them?
« Reply #6 on: April 12, 2013, 07:55:44 pm »
What are you using the meter for that would draw so much current?  I'm curious!

well today i encountered a problem with my stepper motor power supply (home built transformer one) blew the fuse on my 10A meter thats what triggered me but i also work with allot of high current SMPSs and capacitor discharges and such ... i dont plan to go past 50A steady but with peak surges 100A will do me

next up i got to make an adjustable load ... TO THE BUCKET OF FETS!
My one regret in life is learning to speak English on the internet ...
 

Offline Smokey

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Re: DC clamp meters? Any thoughts about them?
« Reply #7 on: April 12, 2013, 09:22:27 pm »
Meters like that really only work with constant signals.  You probably want something with a decent bandwidth for the stuff you are talking about.

::Edit::
Probably should stay away from this guy on ebay, xux2007
See other thread on current clamps.
« Last Edit: April 12, 2013, 09:26:22 pm by Smokey »
 

Offline notsob

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Re: DC clamp meters? Any thoughts about them?
« Reply #8 on: April 12, 2013, 10:03:29 pm »
As an example of low voltage current where a DC clamp meter would be of use. The  starter motor  on a tractor  draws over 200Amp.
However generally accurate measurement is not required so most people use an induction ammeter.
 

Offline smashedProton

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Re: DC clamp meters? Any thoughts about them?
« Reply #9 on: April 14, 2013, 05:22:34 am »
For that, a current sense trafo connected to your oscilloscope would work wonders
http://www.garrettbaldwin.com/

Invention, my dear friends, is 93% perspiration, 6% electricity, 4% evaporation, and 2% butterscotch ripple.
 

Offline Pentium100

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Re: DC clamp meters? Any thoughts about them?
« Reply #10 on: April 14, 2013, 05:31:21 am »
If I had to measure DC current more often, I would buy a DC clamp meter too. Having to break the circuit to connect the meter is annoying. And the standard meter only goes up to something like 10A. 10A is not a lot...
 

Offline DenzilPenberthy

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Re: DC clamp meters? Any thoughts about them?
« Reply #11 on: April 15, 2013, 01:04:39 pm »
I bought one of these little DC clamp meters a while ago.

http://www.justoffbase.co.uk/Mini-AC-DC-Clamp-Meter-Sealey-MM405?gclid=COns6cvdzLYCFSXLtAodbScAIw

I love it to bits, it makes working on 12v stuff so easy, e.g. automotive and solar stuff.
 


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