Analog TDS Sensor / Meter For Arduino SKU: SEN0244 - Can't get the expected results

Hi,
Following DFRobot code sample, I just tried the sensor with a Uno R3 but I do not get expected results as presented.
This is what I have in the serial monitor
Any idea ?
Thanks in advance,
Michel
Following DFRobot code sample, I just tried the sensor with a Uno R3 but I do not get expected results as presented.
This is what I have in the serial monitor
Any idea ?
Thanks in advance,
Michel
