Calibration error in ZMPT101B i didn"t the sine wave using arduino

Hi everyone
Initially i CALBRIATE the value in first step.. so didn"t get proper sine value while i turning 100k pot also
Connection Arduino to zmpt101b
5V TO VCC
A1 TO OUT (I Checked here in multimeter 2.53v in zmpt101b)
GRD TO GRD
product link zmpt101b

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

  // Set analoge pin to input
  pinMode(A1, INPUT);
}

void loop() {
  // Read analog input
  Serial.println(analogRead(A1));
  delay(20);
}

Here i should get the sinewave but inot geeting properly

please help me to crack this guys and thank you so much

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