Products > Test Equipment
Good clamp meter for low DC currents
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J-R:
I say the video points out the differences between someone who is coming from the concept side vs. someone who is just trying to do a job and measure an unknown with their clamp meter.  So yes, some of the tests and conclusions are a bit questionable in the context of this thread, but you may still bump into those conditions in the field.  Who is right?  Maybe one solution is high-speed sampling, then perform any desired calculations such as averaging.

The bugs and lockups are disturbing though, especially at that price point.  They should have gotten a second unit to rule out a faulty device for some of the issues.

Overall, it's not looking too good for the CM11.  Limited functions, bugs/lockups, expensive...  But maybe some would still buy it for specific tasks.
Martin72:

--- Quote ---The bugs and lockups are disturbing though, especially at that price point.  They should have gotten a second unit to rule out a faulty device for some of the issues.
--- End quote ---

What bugs ?

One of the main problems is that you have to know what you are using what for.
For me, the matter was over when PWM signals or the simulation thereof were measured.
But that is beside the point.
We bought this current clamp because we wanted to measure small standby currents.
Before we could use this current clamp, we had to have it calibrated externally and the second one has now successfully passed this type of calibration.
I therefore only see two possibilities.
Either the video is largely rubbish, or the calibration carried out according to international standards is rubbish.
Due to the principle, I tend towards the former.
J-R:

--- Quote from: Martin72 on February 10, 2024, 01:31:56 am ---
--- Quote ---The bugs and lockups are disturbing though, especially at that price point.  They should have gotten a second unit to rule out a faulty device for some of the issues.
--- End quote ---
What bugs ?

--- End quote ---
Enter manual range mode, can't go back to automatic.  You have to turn it off and back on.
There is no display icon to indicate if you are in manual or automatic mode.
Min/Max function has various issues, such as showing OL when you open the clamp/stop current flow while in manual mode and it actually locks up the meter if you press hold while using Min/Max.
It generates a 102Hz signal back through the wire being tested while in DCA mode.
Over 30mA draw in DCA mode, which combined with the two AAA batteries means a very short runtime (maybe 30 hours).

I agree with you about the the flaws in the video.  They clearly don't understand a lot about what they are doing.  The point I was trying to make was all they know is when they try to take certain measurements, one cheap clamp seems to work and the CM11 doesn't.
beanflying:
Looking for a cheapish DMM to leave in the Car toolbag so I was going to buy another 210E as I like the one I already have but the BT version of the Owon for singlehanded vehicle work might be handy and make for a decent second clamp meter if needed.

Anyone got a BT version care to comment? Yes I know BT has issues too but it is what it is.
naiclub:
I use model 204A and it works well and is quite accurate. Used for almost 10 years.
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