hi guys,
I am using 2 methods to measure my e-consumption.
one flukso measures via the 3 "50amp current clamps" and
my second flukso measures via S0 1000imp/kwh electricity meter. So I have two graphs in my flukso electricity dashboard.
the only problem I have is that the graph for the S0 electricity meter is about 1 minute in "the future" :D
is there any way to fix that besides an hard reset (power off/on the flukso)?
cheers
chris
Sorry, I can't comment on how to get the time correct on your Flukso. It should be set automatically via ntp, which would give well better than one-second accuracy.
I'm curious though to hear what sort of differences you see between the current clamp readings and the meter readings. How close do the clamps get to the meter reading?
Michi.
hi Michi,
it's about 15-20% difference, you can see/compare my dashboard via my nickname "chriz99"
cheers
chris
Hi Chris,
thanks for the info! 15-20% is quite significant. But then, even with current clamps and some inaccuracy, you are still far better off than with no information at all…
I tried getting your consumption data via the "Add a Fluksonian" field in the Dash, but it doesn't seem to be working. Nothing happens when I type chriz99 and press "Add".
Michi.
Especially inductive loads can be quite misleading using the clamps. In my case, a TL lamp of 60 cm measured 80 Watt using a clamp, and now measures 25 Watt since I'm using a DIN kWh meter...
PS: I was able to add chriz99 to my dash...
OK, figured it out. The problem was that my consumption data was private, which means that I can't add someone else's consumption either. When I change consumption data to public, I can see Chris's graphs.
It would be nice to fix the web interface to display an error message instead of doing nothing when consumption is private and someone tries to add another Fluksonian.
Cheers,
Michi.
I've also been running a benchmarking test of a clamp reading vs a DIN-rail meter one. I'm getting a long-term offset of 10% with a 3% standard deviation.
When you look at your two lines, the clamps are giving you a consistent high reading compared to the S0. So one trick we could do is to use two readings from the utility's meter (say a week apart) and use this data to calculate the offset. That way, we can compensate the offset in all charts.