Campbell Scientific RTDAQ Software - Manual (Page 262)

Section 9. Calibration and Zeroing
b. A number less than 0 indicates that the calibration process
encountered an error. Resolve the error before proceeding with the
calibration then set the mode value to zero for a fresh start.
2. Place the sensor into the first known point condition.
3. Indicate the known value of the first point by changing the “known value”
variable to that value.
4. Set the mode variable to 1 to initiate the first part of the calibration
process.
5. Note that the datalogger automatically sets the mode variable to 2 during
the first point calibration process.
6. Note that the mode variable is automatically set to 3 when the first point is
completed.
a. The datalogger is waiting for the user to place the system into the second
point condition.
7. Place the sensor into the second known point condition.
8. Indicate the known value of the second point by changing the “known
value” variable to that value.
9. Set the mode variable to 4 to initiate the second part of the calibration.
10. Note that the datalogger sets the mode variable to 5 during the second
point calibration process.
11. Note that the mode variable is set to 6 by the datalogger when the
calibration process completes successfully.
9.5 Generating Calibration Programs
The RTDAQ Program Generator can be used to create CR5000 or CR9000X
programs with zeroing or two-point multiplier and offset calibration. Set up
zeroing calibration by selecting a Zero Flag (1-8) for a measurement. To set
up a two-point multiplier/offset calibration, select the Cal-on-site check box
within a measurement detail box. Offset calibration and two-point multiplier
only calibration are not supported in the RTDAQ Program Generator. Basic
field calibration options are also available when generating common generic
sensor programs with Short Cut, but Short Cut will not generate code that uses
flags to trigger calibrations.
For more information on using the Program Generator and Short Cut, refer to
Section 5.
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