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-   -   New clamp meter question (http://www.diychatroom.com/f18/new-clamp-meter-question-64829/)

Chevyman30571 02-18-2010 11:01 PM

New clamp meter question
 
I just picked up a new clamp meter today from the supply house. It is a true rms meter and is rated for 600 amps. When I go to test ac voltage the meter displays mv and the numbers jump around when the leads are not touching anything. On my regular open jaw greenlee meter which was alot less expensive when i am testing ac voltage and nothing attached to the probes the display reads zero. Is the meter i bought bad or is this normal?

Chevyman30571 02-18-2010 11:51 PM

I just read somewhere that because it is autoranging this occurs. If i short the test leads it zero's out.

nap 02-19-2010 01:18 AM

is it an Ideal brand?

HooKooDooKu 02-19-2010 12:49 PM

The mv likely stands for milivolts. 1 mv = 1/1000th of a volt.

Think of it as the device is attempting to read the tiny voltage potential in the air, which is of course constantly changing.

micromind 02-19-2010 06:56 PM

It's completely normal.

The meter is sensitive enough to pick up stray voltages in the air. That's why it goes to zero when the leads are shorted together.

Rob

nap 02-19-2010 07:24 PM

I disagree. It just sounds like a crap Ideal meter.

micromind 02-19-2010 07:44 PM

I should have put 'completely normal for a low-end meter'. lol.

The better ones nave a snubber network to cut back on reading transients.

Rob

nap 02-19-2010 08:05 PM

Quote:

Originally Posted by nap (Post 402873)
I disagree. It just sounds like a crap Ideal meter.

Quote:

Originally Posted by micromind (Post 402883)
I should have put 'completely normal for a low-end meter'. lol.



Rob

same thing isn't it?:whistling2:

I much prefer Fluke. They've been good to me and for me.

Chevyman30571 02-20-2010 12:21 AM

it is a fluke. LOL, guess it is normal

Red Squirrel 02-20-2010 12:54 AM

Quote:

Originally Posted by micromind (Post 402860)
It's completely normal.

The meter is sensitive enough to pick up stray voltages in the air. That's why it goes to zero when the leads are shorted together.

Rob

Yep my old meter used to do this. The numbers would get more crazy if I put the probes near a transformer or something. I accidentally set it to amps instead of volts and the receptacle I was testing worked. That was the end of that meter. :laughing:

nap 02-20-2010 05:26 PM

Quote:

Originally Posted by Chevyman30571 (Post 403021)
it is a fluke. LOL, guess it is normal

Hey, if it works, it's a Fluke!!!:laughing:

I never could figure out why somebody would name their company Fluke when this is such an easy joke.


Can't say I have ever had the problem with a Fluke.

HooKooDooKu 02-20-2010 06:50 PM

Quote:

Originally Posted by nap (Post 403304)
I never could figure out why somebody would name their company Fluke when this is such an easy joke.

Have you not seen this furnature store?
www.badcock.com

nap 02-20-2010 08:01 PM

Quote:

Originally Posted by HooKooDooKu (Post 403352)
Have you not seen this furnature store?
www.badcock.com

Uh...ya.:laughing:

J. V. 02-21-2010 11:25 AM

Perfectly normal on Fluke and any other.

Chevyman30571 02-21-2010 05:12 PM

Thanks J.V. Also alot of the guys I work with use ideal clamp meters. Whats wrong with them. Just becuase they didnt want to spend the money doesnt mean that ideal makes bad meters. They are just as accurate as a fluke.


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