Current Calibration

[jolcese]

I have installed a Vue and it's consistently reporting daily energy ~3.5% lower than what I can see on the utility's website.
The voltage readings on both phases are very close to what I can measure with a good Fluke multimeter.
And the power sum of all the individual circuits at a given time is also around ~3.5% lower than the total power (phase 1 + phase 2)

So my take is that the main current clamps need some calibration. Is there a way to do it with the current code? I only see calibration for voltage.

[flaviut]

Every field can have a multiplier or a calibrate_linear filter, and you're not limited to just integers.

…

On Wed, Feb 22, 2023, 14:25 Jose Olcese ***@***.***> wrote: I have installed a Vue and it's consistently reporting daily energy ~3.5% lower than what I can see on the utility's website. The voltage readings on both phases are very close to what I can measure with a good Fluke multimeter. And the power sum of all the individual circuits at a given time is also around ~3.5% lower than the total power (phase 1 + phase 2) So my take is that the main current clamps need some calibration. Is there a way to do it with the current code? I only see calibration for voltage. — Reply to this email directly, view it on GitHub <#131>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABHY2HJLTFWWQ5PCSYHTRB3WYZRZDANCNFSM6AAAAAAVEXOHQQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[flaviut]

Let me clarify with an example:

Good multimeter reads 2.2A, Vue reads 2A. Either of these two lines can be used to calibrate this out:

      - { phase_id: phase_b, input:  "2", power: { name:  "Circuit 2 Power", id:  cir2, filters: [ *moving_avg, *pos, multiply: 1.1 ] } }

      - { phase_id: phase_b, input:  "2", power: { name:  "Circuit 2 Power", id:  cir2, filters: [ *moving_avg, *pos, calibrate_linear: ["0.0 -> 0.0", "2.0 -> 2.2"] ] } }

There's no need to make changes to the daily energy sensors.

[jolcese]

Thank you!