calculations ECS1030-L72 sensor? about emonlib HOT 4 CLOSED

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@jamipraveeen adding 9v adapter and change code

adapter
input - AC100~240V 50/60Hz 0.2A
output - DC9V 0.5A

#include "EmonLib.h"             // Include Emon Library
EnergyMonitor emon1;             // Create an instance

void setup()
{  
  Serial.begin(9600);

  emon1.voltage(1, 234.26, 1.7);  // Voltage: input pin, calibration, phase_shift
  emon1.current(0, 111.11);       // Current: input pin, calibration.
}

void loop()
{
  emon1.calcVI(20,2000);         // Calculate all. No.of wavelengths, time-out
  emon1.serialprint();           // Print out all variables
}

but
...
-0.16 0.37 3.90 0.09 -0.45
-0.13 0.37 3.81 0.10 -0.36
-0.12 0.33 3.80 0.09 -0.37
-0.12 0.35 3.85 0.09 -0.35
-0.12 0.34 3.99 0.09 -0.34
-0.14 0.35 3.87 0.09 -0.41
-0.14 0.35 3.85 0.09 -0.40
-0.12 0.35 3.78 0.09 -0.35
-0.16 0.34 3.80 0.09 -0.46
-0.14 0.35 3.86 0.09 -0.38
-0.14 0.35 3.88 0.09 -0.40
-0.13 0.32 3.74 0.09 -0.40
-0.14 0.35 3.86 0.09 -0.40
-0.15 0.33 4.00 0.08 -0.46
-0.13 0.34 3.84 0.09 -0.39
-0.12 0.35 3.89 0.09 -0.36
...

8.5W lamp measurement output data....????

from emonlib.

@AbrahamYu In the first image, the ECS1030-L72 has a CT Ratio = 30A/15mA = 2000. You also mentioned that the burden resistance connected is 120ohms.
Hence the CT Sensor Calibration value = CT Ratio / Burden resistance = 2000/120 = 16.66
Change the calibration value from the default 111.11 to 16.66

In order to calculate Apparent Power, you multiplied Irms by 220.0V. Did you measure your mains supply and then use this value? In the second image & code, you set the voltage to 234.26V.
Set the voltage calibration values to the value of your mains AC supply read by your Multimeter.

from emonlib.

@AbrahamYu In the second image & code, you mentioned an AC-DC adapter with specifications:

adapter
input - AC100~240V 50/60Hz 0.2A
output - DC9V 0.5A

But Open Energy Monitor measures the AC voltage using an AC-AC adapter & hence it requires scale down & offset circuit so that there is no negative component.

OEM - Voltage Sensing - AC-AC Adapter

You must set the voltage calibration value to the value read by the multimeter at the AC mains supply.
Adjust the phase shift value so that Real & Apparent Power are equal for a resistive load.

Calibration

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