Sensor Calibration; General - Agrowtek GrowControl GC-Pro Operation Manual

Software
Navigate to "Controller -> Clock," or press the clock button at the bottom of the window.

Sensor Calibration

The precision electronic sensors of the GC-Pro can be fully calibrated for "zero offset" and "span" (slope) if necessary.
When calibrating a sensor, always perform the "Zero" calibration first. Performing a zero calibration automatically resets the
span calibration to the factory default. Span calibrations can be performed successively without affecting the zero calibration.
Zero calibration is a linear offset which shifts the
sensor reading so that it matches the actual value.
Touch Panel
Press "Analog Sensors" to enter the
sensors menu. System password req'd.
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Press "Calibrate" to enter the
calibration menu.
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Set the controller time and date
to match the computer.
Span calibration adjusts the slope response of the
reading to correct for any error as the reading gets
further away from the zero calibration point.
Span Correction
Select the zone and which sensor to
calibrate.
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