Gravity SEN0451 Example Code for First Measurement

Connect all the parts and upload the following code. The measurement data can be viewed through the serial monitor after uploading the program, and the probe is not calibrated at this time.
The default parameters: calibration factor K=1.0, temperature=25°C.

Hardware Preparation

DFRduino UNO R3 x 1
Electrical Conductivity Probe x 1
Electrical Conductivity Signal Conversion Board x 1
PT1000 RTD Signal Conversion Board x 1
Electrical Conductivity Calibration Solution 1413us/cm x 1
Jumper wires
Tested Solution

Software Preparation

Arduino IDE (version 1.8.x or later)
Download and install the DFRobot_ECPRO Arduino Library. (About how to install the library?)

Probe - Signal Conversion Board

Probe Wire	Signal Conversion Board
S+ (EC)	Electrical Conductivity Board S+
S- (EC)	Electrical Conductivity Board S-
TEMP	PT1000 Board T+
TEMP	PT1000 Board T-

Signal Conversion Board - Arduino

Signal Conversion Board	Arduino UNO
Electrical Conductivity Board	A1
PT1000 Board	A2

Other Preparation Work

Connect all the parts.

Sample Code

#include "DFRobot_ECPRO.h"

#define EC_PIN A1

DFRobot_ECPRO ec;

uint16_t InputVoltage;
float Conductivity;

void setup()
{
  Serial.begin(115200);

  ec.setCalibration(1); //Replace the 1 with the calibrated K value if it's calibrated
  Serial.println("Default Calibration K=" + String(ec.getCalibration()));
}

void loop()
{
  InputVoltage = (uint32_t)analogRead(EC_PIN) * 5000 / 1024;
  Conductivity = ec.getEC_us_cm(InputVoltage);

  Serial.print("InputVoltage: " + String(InputVoltage) + " mV\t");
  Serial.println("Conductivity: " + String(Conductivity) + " us/cm");

  delay(1000);
}

Result

Default Calibration K=1.00
InputVoltage:	1547 mV	Conductivity:	943.29 us/cm
InputVoltage:	1547 mV	Conductivity:	943.29 us/cm
InputVoltage:	1547 mV	Conductivity:	943.29 us/cm
InputVoltage:	1547 mV	Conductivity:	943.29 us/cm
InputVoltage:	1547 mV	Conductivity:	943.29 us/cm
InputVoltage:	1542 mV	Conductivity:	940.24 us/cm
InputVoltage:	1542 mV	Conductivity:	940.24 us/cm
InputVoltage:	1542 mV	Conductivity:	940.24 us/cm
InputVoltage:	1542 mV	Conductivity:	940.24 us/cm

Example Code for Arduino-First Measurement