Industrial pH Meter Module PH Detector Sensor Analog Sensor 5V for Arduino Raspberry Pi

Industrial pH Meter Module PH Sensor Analog Sensor 5V for Arduino Raspberry Pi

Specification:

- Module power supply: + 5.00V

- Module size: 43mmx32mm

- Measurement range: 0-14ph

- Measuring temperature: 0-60 ℃

- Accuracy: ± 0.1ph (25 ℃)

- Response time: ≤ 1min

- BNC interface pH sensor

- Xh2.54 interface (3-pin patch)

- Gain adjusting potentiometer

- Power indicator

Package list

- 1 pH sensor (BNC interface)

- PH sensor circuit board 1

- 1 Analog connecting line

The electrode output is millivolt, and the relationship with pH value is as follows (25 ℃):

/*

# This sample codes is for testing the pH meter V1.0.

 # Editor : YouYou

 # Date   : 2013.10.21

 # Ver    : 0.1

 # Product: pH meter

 # SKU    : SEN0161

*/

#define SensorPin 0            //pH meter Analog output to Arduino Analog Input 0

#define Offset 0.00            //deviation compensate

unsigned long int avgValue;     //Store the average value of the sensor feedback

void setup()

{

  pinMode(13,OUTPUT); 

  Serial.begin(9600); 

  Serial.println("Ready");    //Test the serial monitor

}

void loop()

{

  int buf[10];                //buffer for read analog

  for(int i=0;i<10;i++)       //Get 10 sample value from the sensor for smooth the value

  {

    buf[i]=analogRead(SensorPin);

    delay(10);

  }

  for(int i=0;i<9;i++)        //sort the analog from small to large

  {

    for(int j=i+1;j<10;j++)

    {

      if(buf[i]>buf[j])

      {

        int temp=buf[i];

        buf[i]=buf[j];

        buf[j]=temp;

      }

    }

  }

  avgValue=0;

  for(int i=2;i<8;i++)                      //take the average value of 6 center sample

    avgValue+=buf[i];

  float phValue=(float)avgValue*5.0/1024/6; //convert the analog into millivolt

  phValue=3.5*phValue+Offset;                      //convert the millivolt into pH value

  Serial.print("    pH:"); 

  Serial.print(phValue,2);

  Serial.println(" ");

  digitalWrite(13, HIGH);      

  delay(800);

  digitalWrite(13, LOW);

}