I wonder how clamps data is measured?
imagine that, for a same instant power consumption, the clamp is moved, so that the measured voltage on the + and - screws is different.
Will the FLM determine that the instant power consumption has changed?
In fact, my question is: how FLM is computing the real power consumption, if measured voltage on the clamp can change with the position of the clamp.
Thx for you response.
PS: not sure that this question is to be classed in Installation forum
I don't know if I understand the question correctly:
The "measured voltage" at the clamps represents the current floating through the line the clamp is attached to (static at time of measurement - or do you intend to "play generator" by moving the clamp thus inducing an extra magnetic flux?!); the voltage output here is proportional to the current floating: 0V at the clamp represent 0A linear up to 5V representing 50A (or the corresponding maximum Amperes the clamp is able to handle, that is 50, 100 or 500...) - with the assumed stable voltage of the line (230V AC in Europe - fixed parameter in the configuration settings) we have a power "floating" through the line equal to (fix) 230V multiplied by (xV measured times 50A divided by 5V --> y[A])... (error of phase shift is assumed negligible)
So the actual answer is, not the "voltage" is measured but the current; see for example http://en.wikipedia.org/wiki/Current_clamp for a maybe "more appropriate" explanation.
Best regards
Markus
Okay, what you explain let me understand that the position of the clamp has no importance, the main requirement being that the clamp is around the wire.
Then I don't understand the meaning of step 3 in the installation page : https://www.flukso.net/installation
=> "The lip should lie flush with the clamp's body." <=
It is a split core that has a plastic case around it - when you open it, you can put it around the wire without having to remove the wire; after that you close the plastic case again to close the core actually; this must lock in ("the lip" of the fastener), thus tighten ("lie flush with the clamp's body"). Get an impression of the split core clamps at http://www.hqsensing.com/split-core-ct.html - that is the manufacturer of the clamps - it is actually also visualized in the picture of "step 3" in the locked position (the clamp is put around the wire, not the wire through the clamp).