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Updated Power monitoring calibration (markdown)

blakadder 2019-02-22 22:39:36 +01:00
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Power-monitoring-calibration.md

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You might need to calibrate your power metering device as correct measurements are influenced by hardware and timing differences.
You might need to calibrate your power monitoring device as correct measurements are influenced by hardware and timing differences.
This is how to do it:
You will need a:
For proper calibration you will need:
- your power monitoring capable device flashed with Tasmota and configured to a correct module/template that supports power monitoring
- calibrated multimeter (AC capable)
- incandescent light bulb (we use a 60 W one in the example)
- (optional) power meter (aka Kill A Watt)
1. Connect the light bulb to your device.
* (Optional: plug your device into the power meter)
2. Open the Web UI for your device in one window and another window to that same devices Console
* *Optional: Plug your device into the power meter*
2. Open the web UI for your device in one window and another window to that same devices Console
3. Turn power on and wait a few seconds for the power metering to settle on a stable power reading
4. Verify the **Power** reading in the web UI (optionally with the power meter as well) for the expected 60 W and if needed change the power offset with command: <BR>&nbsp;&nbsp;&nbsp;&nbsp;`PowerSet 60.0`<BR>&nbsp;&nbsp;&nbsp;&nbsp;*(if you're using something with different power draw enter the appropriate number)*
5. Verify the **Voltage** reading with the multimeter and if needed change the voltage offset in V with command: <BR>&nbsp;&nbsp;&nbsp;&nbsp;`VoltageSet 235.5`<BR>&nbsp;&nbsp;&nbsp;&nbsp;*(235.5 would be replaced with your measurement which varies depending on the electrical standards and your electrical grid)*