How can I measure the right Libelium conductivity sensor.

Hi guys,

I've purchase the Analog Electrical Conductivity Sensor and I want to connect Libelium's Conductivity Sensor. I tried to use this oficial code on ESP32 and compare to the DFROBOT's conductivity sensor using the DFROBOT's external electronic. Therefore, when I try to calibrate Libelium's sensor, I can't have the same conductivity value as DFRROBOT's sensor. How can I adjust this code to read the Libelium's sensor? This is the libelium sensor: LIBELIUM.