GTCGeneral Technologies Corp CM100 1 mA to 100 Amps AC/DC Low Current Clamp Meter

GTCGeneral Technologies Corp CM100 1 mA to 100 Amps AC/DC Low Current Clamp Meter

Q: The stated accuracy for DC current is, " +/- 2.5% +/- 10 dgts." (Assume "dgts" = digits?) Can anyone clearly explain what "+/- 10 digits" means?

The +/- 10 digits means that the meter may be off 10 digits in the least significant (furthest to the right of the decimal place) digit. It's a standard way that meters are rated for accuracy besides the +/- %. If the meter is reading to 3 significant digits (0.000 to +/- 9.999 then the meter may be "off" ten digits in the 0.00x place). This is in addition to the percent error. For example, if this meter reads "1.000" mA. The actual value may be +/- 2.5% (+/- 0.025 mA) +/- 10 digits, so that means the actual value would be between 1.000+/-.025+/-.010= 1.035 to 0.965. If the meter range was only 2 decimal places (it read 1.00) then the actual value would be 1.00+/-.025+/-0.10= 1.33 to 0.87. Think of "+/- digits" at the amount number of values the least significant digit in the reading may be "wrong". This must be added to the percentage error. Hope that makes sense.

Q: Will the 100 amp max. range be enough to check the starter current drawn from the battery by cars & trucks ? Will the clamps fully grip the cables ?

For starter motors, this is the wrong tool for the job. It is the best low current clamp meter I have used, closest measurement to a Siemens device I also use, and that's well over $3000. This little guy fits in your pocket, and it's made in the USA. It is temperature sensitive, so it does require zeroing occasionally, its only drawback. But, if you are measuring a few milliamps, it's very useful. For starter draw, I use the Fluke 88 with the i1010 clamp accessory. With this device, you can read average and peak draw.

Q: For AC current measurements at the low end (20-100 mA), does this meter achieve the stated accuracy/precision (+/- 10 mA)? Thanks.

On AC current it is OK but on DC it is very unstable and you have to constantly pushing Reset because after measuring a current it does not returns to zero, it stays at there last measure.

Q: Can this meter read in the 2 - 3 ma range in the ac mode?

I never try that, for low frequency should be OK. For high frequency AC , should use scope.

4.3/5

Product ID: 293018594

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Details

Brand
GTC
Power source
Battery
Style
Clamp
Colour
Grey with
Item weight
0.95 Pounds

⚡0.001-100A range

📏1.2" jaw width

🔋Battery powered

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Description

🔍 Measure with Confidence!

COMPACT DESIGN - Small jaw size (1.2" W x 0.53" D) allows for easy access in tight spaces.
FAST SAMPLING RATE - 2 readings per second for quick and efficient measurements.
COMPLETE KIT INCLUDED - Comes with test leads, soft carrying pouch, and batteries for immediate use.
PRECISION MEASUREMENT - AC/DC current measurement from 0.001 to 100 Amps for accurate diagnostics.
USER FRIENDLY OPERATION - One rotary switch operation with peak and data hold functions for seamless use.

The GTC General Technologies Corp CM100 is a versatile clamp meter designed for both AC and DC current measurements ranging from 0.001 to 100 Amps. Its compact jaw design allows for easy access in tight spaces, while the user-friendly rotary switch operation and fast sampling rate ensure efficient and accurate readings. The product comes complete with essential accessories, making it an ideal tool for professionals seeking reliability and precision.

Specifications

Manufacturer	General Technologies Corp.
Part number	CM100
Item Weight	431 g
Product Dimensions	28.96 x 14.48 x 6.35 cm; 430.91 g
Item model number	CM100
Color	Grey with Yellow Clamp
Style	Clamp
Power source type	Battery Powered
Volume	1 Milliliters
Item Package Quantity	1
Included components	CM100, 2 batteries, User's manual, Test leads, Soft carrying pouch
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline

Have a Question? See What Others Asked

The stated accuracy for DC current is, " +/- 2.5% +/- 10 dgts." (Assume "dgts" = digits?) Can anyone clearly explain what "+/- 10 digits" means?

Will the 100 amp max. range be enough to check the starter current drawn from the battery by cars & trucks ? Will the clamps fully grip the cables ?

For AC current measurements at the low end (20-100 mA), does this meter achieve the stated accuracy/precision (+/- 10 mA)? Thanks.

Can this meter read in the 2 - 3 ma range in the ac mode?

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€ 264.30

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