As the manual tells, ports 1 to 3 are fixed clamp ports in the v3E.
"The port numbers are printed on the front of the enclosure for easy reference, with the polarity denoted by + and -. Ports #1 to #3 are current clamp ports that are tuned to accept Flukso FLS06-type split-core current clamps. Ports #4, #5 and #6 can be used for counting pulses. "
stielens |
Is this a hardware or software limitation as te v2B has selectabel inputs?
gebhardm |
Hardware - the v2B has switchable inputs (in contrast to the v2A) that the v3E revoked due to having three pulse inputs by default. This is also caused by the completely different analog handling that works with a very high sampling rate to follow the wave form at the clamps.
i have a 3fase kwh with S0 for measuring elek. consumption
i have 2 pv plants to measure, 1heatpump and water consumption
therefore i need 5 pulse inputs...
confused that v2B has switchable inputs that v3E lacks
so have to buy 3 new current clamps and drop measurement of the water
gebhardm |
Why don't you use your v2 further on?! Devices may be added, thus shown together in the account...
stielens |
i am aware of this posibility;
the cost of these 2 flukso's and clamps ads up to €430, my intention was to sell on the old flukso
otherwise this cost for measuring an extra port makes no sense
gebhardm |
I'll make that a development request, as I could imagine a further solution to this (the FLM v3 as such is capable to deal with many more sensors, so "just" the interfacing is an issue)...
The FLM03E uses 16-bit sigma-delta ADCs for sampling the current clamps. The PCB was carefully designed to get the maximum accuracy from these ADCs. So we're using a 4-layer board with split analog and digital GND and PWR planes and thus strict separation between the analog (current clamp) domain and the digital (pulse inputs + digital logic) one. It would be a pity to mess this all up by introducing re-configurable inputs.
As the manual tells, ports 1 to 3 are fixed clamp ports in the v3E.
"The port numbers are printed on the front of the enclosure for easy reference, with the polarity denoted by + and -. Ports #1 to #3 are current clamp ports that are tuned to accept Flukso FLS06-type split-core current clamps. Ports #4, #5 and #6 can be used for counting pulses. "
Is this a hardware or software limitation as te v2B has selectabel inputs?
Hardware - the v2B has switchable inputs (in contrast to the v2A) that the v3E revoked due to having three pulse inputs by default. This is also caused by the completely different analog handling that works with a very high sampling rate to follow the wave form at the clamps.
See, as an example, https://github.com/gebhardm/flm03/tree/master/MQTTrealtime - this you can't do with a v2B and its clamps...
i have a 3fase kwh with S0 for measuring elek. consumption
i have 2 pv plants to measure, 1heatpump and water consumption
therefore i need 5 pulse inputs...
confused that v2B has switchable inputs that v3E lacks
so have to buy 3 new current clamps and drop measurement of the water
Why don't you use your v2 further on?! Devices may be added, thus shown together in the account...
i am aware of this posibility;
the cost of these 2 flukso's and clamps ads up to €430, my intention was to sell on the old flukso
otherwise this cost for measuring an extra port makes no sense
I'll make that a development request, as I could imagine a further solution to this (the FLM v3 as such is capable to deal with many more sensors, so "just" the interfacing is an issue)...
See https://www.flukso.net/content/flm-v3-allow-further-pulse-ports-be-added... - as a potential solution with the FLM v3 (and not too much extra cost).
The FLM03E uses 16-bit sigma-delta ADCs for sampling the current clamps. The PCB was carefully designed to get the maximum accuracy from these ADCs. So we're using a 4-layer board with split analog and digital GND and PWR planes and thus strict separation between the analog (current clamp) domain and the digital (pulse inputs + digital logic) one. It would be a pity to mess this all up by introducing re-configurable inputs.