Thermo Scientific AquaSensors™ DataStick™ Measurement System User Guide
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Once the calibration has been initiated it will take somewhere between 30 seconds and 2 minutes depending on sensor
and temperature measurement stability. During this period, the abort sequence can be initiated as shown with the active
ABORT button.
When the second point has been successfully calibrated, measured values will be based on the new calibration. The rate of
change in reading from the old measured value to the new will be dependent on the sensor filter value that is entered in the
configuration menu.
Exiting the calibration menu will return the display to the measure screen.
ASCII Command to initiate a 2-Point Sample Calibration
Function
Command
Explanation
2-Point Sample
First Sample
CALPH2PS 0 X
Initiates 1
st
point of a 2-point sample calibration;
Where X is the desired pH value.
2-Point Sample
Second Sample
CALPH2PS 1 Y
Initiates 2
nd
point of a 2-point buffer calibration;
Where Y is the desired pH value.
All Calibration Commands will respond with “OK” if accepted and “ERROR” if not accepted
The status of the calibration can be reviewed with the CALSTATUS command. When the last number returned is a 1,
the calibration is in process. When the last number returned is a 2, the calibration has been successful. Any other number
indicates a specific failure mode (see appendix).
