Current measurements accuracy with Power Profiler Kit 2

Hello everyone,

I am working on a low consumption product and to optimize it I was using the PPKII to analyze my tuning.

I had strange observations so that I decided to do a very simple setup to compare my multimeter and the PPKII.

The setup is easy : a 440,8kΩ resistance in serie with an ampere meter and the PPKII. A battery of 3,78V has been used to ensure stability in the alimentation. Electric scheme linked.

I was attempting to read a 3,78V / 440,8kΩ = 0,0086 mA = 8,6 µA.

On my multimeter ref UNI-T UT139C I have 8,7µA which is good.

On the PPKII I have 0,61 µA ! Where could come such a difference ? I join the ppk file to my message if someone wants to open it and see that it last a few mili seconds before stabilizing to 0,61 µA.

Thank you in advance for your help !

Best regards,


Impression Schématique.pdf


Parents Reply
  • Hi,


    SimonD said:
    To be sure that I do things right, could you confirm that if I put the ppk2 on the orange wires (cf joint schema) I will be able to measure the consumption of the different parts of my system. Of course, I let the GND of the ppk2 connected to the GND of the circuit.

    Yes, that is correct. I assume you want to use it as an ampere-meter, and not a source meter?

    In case of ampere meter operation, you can choose to measure both or individually, depending on where you break the connection.


    Kind regards,