PZEM 004T V3 inaccurate energy reading?

[dabide_bidubi]

New with using PZEM 004T with 1000/1 open current transformer. I am using it with an arduino mega. The energy reading seems off.

I stole the code from miliohm.com just to test if the pzem is working or not.

The code is in the following text file: pzem_testing-code.txt (1.4 KB)

It can also be seen as the first sample code on: https://miliohm.com/pzem-sensor-tutorial-read-current-voltage-power-factor-power-frequency-on-mains/

Now, the sample data from the serial monitor shows the following readings:

Voltage: 241.80V

Current: 0.23A

Power: 55.90W

Energy: 0.894kWh

Frequency: 59.9Hz

PF: 0.98

This is the part where the energy reading seems off, 55.90 watt-second when converted to kwh should be "0.00001555556 kWh" but the pzem reading is 0. 894 kWh, is there something wrong with my logic? Or is there something with the pzem i don't understand. Maybe the pzem uses a different unit for electrical energy?

[b707]

@dabide_bidubi

55.90 watt-second when converted to kwh should be "0.00001555556 kWh"

It is not a "watt-second", it just a watt.
The constant power of 55W give you an energy flow 55Ws in a second or 55Wh (0.055 kW*h) in a hour