Fluctuations in minute mode
by
onNow that I have the Minute tab working (thanks Roggy!), I find that the reading jumps up and down a lot, even when I know that actual power consumption is constant (or, at least, much more constant than suggested by the reading). I've attached a screen shot of the consumption in Minute mode. I see this up-and-down pattern at all levels of consumption, whether high or low. The reading jumps between high and low with every output. I see the same pattern in the Hour tab, just on a coarser scale.
The fluctuations are large, typically a little more than ±10% of what I assume is the real value.
I'm measuring consumption by monitoring the pulse output of my 3-phase meter (400 pulse per kW/h, that is, 1 pulse for every 2.5 W/h).
Does anyone know what causes these up-and-down readings?
Thanks,
Michi.