Do you mean meter drawing more current from motor on an uphill grade ? The meter is not a load, it should not draw current. We think it should be that motor draws more current from battery, is it right?
Could you please tell us the max load current? You mention voltage spikes, how large it is?
And does the negative of battery goes through the shunt then connected to meter negative?
I have a 200141 meter. The voltmeter seems to be very accurate but the current measure is very inaccurate. It reads about twice the actual current draw.
Also, when I long press the button, I get a “Set” screen with blinking numbers. This is not described in the manual. What does this do?
We just make insturction for it, please kindly find more details here. 200141
If the reading is not accurate, you may try below calibration:
1. Connecting power supply (20V/10A), shunt and load.
2. Connecting the two calibrating spots (Open the back cover, then you will find two holes which
marked by “W” on the edge of board)
3. Turn on the power supply.
4. When the screen display changed from “CAL—“ into” —PASS”, that means the calibration is
successful.
Model # 200141 trying to calibrate (currently reads 32vdc when sampling 20.0; but zero amps when sampling 10A) using procedure per Reply#33680. Screen shows 20.v and 10A during calibration.
goes Cal—>-err. And of course calibration isn’t saved.
Mark
Josh S
Brian Edey