Just got my new CC ICE2 80HV. I love its data logger function, but the current reading seems higher than my Eagle Tree data logger. Since my job relates to a lot of tool calibrations, so I like to share how I calibrate these current readings.

Figure 1 shows the setup. ICE2 80HV, Eagle Tree and Watts Up are series together, so the current is the same.

Current standard is read from a calibrated current shunt (1mV=1Amp), voltage across this current shunt is picked up by a calibrated Keithley 2010 precision multimeter. Each measurement is repeat twice in opposite polarity to eliminate the thermal noise. Table shows the results: just as I suspected, the current reading from CC ICE2 80HV data logger is off by ~4.5% at high current (>30A) range, while Eagle Tree and Watts Up are off less than 1.4%.

Well, the calibration will NOT improve anything, just curious how accurate those numbers are.