Products > Test Equipment
Low current (mA) clamp meter with recording for automotive use (dark current)
hugh_CZ:
I am looking for current clamp meter to be used in automotive dark current measurement.
Minimum currents to be measured are around 20mA, max can be up to 10A-15A peaks... I understand that clamp meter wont be very accurate, but having the values of +-5mA would be enough for me.
And clamps because I want to handover this one to the workers, that are not trained in some electrical measurement, etc...
Measurement recording is a must, so I can evaluate the results later. Ideally some industrial solution maybe? Budget is not a problem, but lets try to stay in reasonable price (+-1000€).
Is there any tool that may cover the above mentioned please? Thanks for any tips!
Byacey:
Any clamp meter for DC current will be using a hall effect sensor, which typically is too sensitive to be using for automotive use because of all the stray magnetic fields under the hood of the engine compartment.
I have one, but it's really only suitable for currents from a few amps up to 1000A.
Measuring down into the mA range, I wouln't put much faith in the accuracy of the readings.
David Hess:
I have been thinking of getting a BK Precision Model 316 which is suppose to have a resolution down to 1 milliamp for that application.
Kean:
--- Quote from: David Hess on October 18, 2024, 11:41:08 pm ---I have been thinking of getting a BK Precision Model 316 which is suppose to have a resolution down to 1 milliamp for that application.
--- End quote ---
That looks good, and seems a very similar design to the ST-337, but the ST-337 (aka TENMA IN05268) has a 4A range which suits my typical use much better.
I posted a quick comparison of some of my clamp meters earlier this year with measurement data from sub-1mA to 100mA DC.
https://www.eevblog.com/forum/testgear/good-clamp-meter-for-low-dc-currents/msg5252202/#msg5252202
I have since bought a couple of Owon CM2100 clamp meters this year, and they seem to be reasonable. The smaller opening on the ST-337 and F771 are better in my opinion, but may limit multi-turn use.
The Fluke 771 is still my go-to for small currents (less than 100mA, ideally less than 20mA for high accuracy) when it is not feasible/necessary to break to loop. It is less sensitive to external factors and reorientation than any others, but the 100mA limit makes it unusable a lot of the time.
David Hess:
--- Quote from: Kean on October 19, 2024, 04:54:06 am ---
--- Quote from: David Hess on October 18, 2024, 11:41:08 pm ---I have been thinking of getting a BK Precision Model 316 which is suppose to have a resolution down to 1 milliamp for that application.
--- End quote ---
That looks good, and seems a very similar design to the ST-337, but the ST-337 (aka TENMA IN05268) has a 4A range which suits my typical use much better.
I posted a quick comparison of some of my clamp meters earlier this year with measurement data from sub-1mA to 100mA DC.
https://www.eevblog.com/forum/testgear/good-clamp-meter-for-low-dc-currents/msg5252202/#msg5252202
I have since bought a couple of Owon CM2100 clamp meters this year, and they seem to be reasonable. The smaller opening on the ST-337 and F771 are better in my opinion, but may limit multi-turn use.
The Fluke 771 is still my go-to for small currents (less than 100mA, ideally less than 20mA for high accuracy) when it is not feasible/necessary to break to loop. It is less sensitive to external factors and reorientation than any others, but the 100mA limit makes it unusable a lot of the time.
--- End quote ---
The big difference between them is the number of counts. Would have to test them to learn drift and noise levels.
BK 316 10A by 0.001A 2.5%+10 $175 Owon CM2100 2A by 0.001A 2%+8 $40 Bluetooth Version Available Extech 380950 4A by 0.001A 2.5%+4 $160UNI-T UT210A 2A by 0.001A 2%+8 25$ UNI-T UT210B 2A by 0.001A 4%+30 25$
Navigation
[0] Message Index
[#] Next page
Go to full version