5. SENSOR CALIBRATION
5.1 Temperature Calibration
The AquaTrace system’s temperature measurement can be recalibrated using a 1-point sample
calibration. Use the following procedure to calibrate the temperature measurement:
1.
Enter the calibration menu on the AV38 Remote Display (see the AV38 user guide for detailed
information on the various menus in the user interface).
2.
Press the ENTER key from the TEMPERATURE calibration menu to initiate the calibration
process. When the temperature calibration procedure is started, the analog output is placed into
hold mode. The user is prompted to prepare the sensor. The sensor value is dynamically
updated during this step.
Thermo Scientific AquaSensors
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AquaTrace
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Trace DO System User Guide
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Calibrate
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Temperature
MENU ESC ENTER
3.
Remove the Trace DO sensor from sample chamber.
4.
Place the Trace DO sensor in a beaker filled with clean water at the desired calibration
temperature.
5.
Allow the sensor to stabilize in the calibration bath. The time required to stabilize will vary based
on the temperature difference between the process sample and the calibration bath. If the two
do not vary significantly, the temperature measurement should stabilize within five minutes. If
the variation is significant it may take up to fifteen minutes for the temperature measurement to
stabilize sufficiently for an accurate calibration.
6.
Use a known reference sensor to determine the actual temperature of the calibration bath.
7.
When the sensor is ready, press the ENTER key is pressed and the user is presented with a
calibration value for editing.
25.3 °C
Sensor ready?
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MENU ESC ENTER
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