Since the ITEAD Support is not reacting at all on my ticket I want to hear your opinion about the case of inaccurate energy calculation with POW rev2.
I use a POW rev2 to measure the energy amount generated by my plug-in PV module. I recognized that although the power measurement seems to be correct, the displayed value of the energy shows a strong deviation to the value obtained by manual calculation from power. Please see the attached figures. I used a second energy meter to verify the result. The POW rev 2 shows 20% too less energy! The internal totaling of power to the energy amount is not correct.
Did someone ever notice this trouble before?