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Help, how can I calibrate AC current

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daisizhou:
This instrument

radiolistener:
If you want to calibrate it with a good precision, you're needs another DMM with much better precision class which is already calibrated, so you can connect both DMM in a series between your signal generator and dummy load and calibrate one DMM by check value on second DMM which is already calibrated.

Oscilloscope has precision about 5% which is probably much worse than your device, so if you calibrate it with your oscilloscope it will have very bad calibration and show you more than 5% error.

daisizhou:
Thanks.I understand what you mean.I completed the calibration plan for DC voltage and DC current using Fluke 8060a.
But for the AC part, I don't have any AC power supply,AC power supply, I mean the type of AC power supply that can change frequency.
So I am unable to complete the AC part of the test

radiolistener:

--- Quote from: daisizhou on June 10, 2023, 11:53:32 pm ---But for the AC part, I don't have any AC power supply,AC power supply, I mean the type of AC power supply that can change frequency.
So I am unable to complete the AC part of the test

--- End quote ---

You can use your signal generator as AC current source. But if you connect it directly it provides too small current, about 100 mA max or even smaller. But you can attach high power audio amplifier to your signal generator and use output of power amplifier.

For example, 100W output from power amplifier on 8Ω dummy load provide you about 3.535 Amps RMS current. But don't use speaker as a dummy load! Speaker is reactive load, it will give you wrong results. Use non inductive dummy load.

But you're needs another DMM which has better accuracy and is already calibrated, so you can use it to check actual value.

J-R:
Are you sure you're reading the calibration procedure correctly?  I do not find that it uses anything other than a 190.0mA DC source for the mA calibration and 100mA over 1.9 seconds for the mAs calibration.  Even the portion where you are in AC mode you are simply verifying the rectifier circuit by applying a negative DC current and checking that it shows a positive value instead.   All other ranges and inputs are only used for verification of proper operation and cannot be adjusted.

Appears to be sold by many companies: Fluke, Keithley, Inovision, CardinalHealth

Fluke manual:

https://assets.fluke.com/manuals/35035___omeng0000.pdf

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