Step 2: Dry Calibration
Do not put the Sensor in any liquid. You are going to calibrate your E.C. Circuit
for a dry condition. This is much like setting the TARE on a scale.
Z0 Informs the E.C. Circuit to calibrate for a dry Sensor.
Full proper syntax: z0 or Z0
The E.C. Circuit will respond: Dry Cal
Informs