7.
The AV38 will update the zero calibration in the sensor based on the current measurement.
During this time, the calibration procedure can be aborted by pressing the ESC key.
Zero
Calibrating…
Thermo Scientific AquaSensors
™
AquaTrace
™
Trace DO System User Guide
23
▲
◄
►
MENU ESC ENTER
▼
8.
If an error occurs during calibration that causes the procedure to fail, the reason for the failure
will be shown.
9.
After the calibration point has been stored, the AV38 will return to the calibration menu. The
user has the option of repeating the procedure if desired. If not, press the ESC key to exit the
menus and return to normal operations.
▲
◄
►
▼
≡
Calibrate
►
Zero
MENU ESC ENTER
10.
Place the sensor back into the sample chamber and resume process flow through the
AquaTrace system.
5.4 Dissolved Oxygen Calibration – 1-Point Calibration
A 1-point calibration can be performed to update the sensor’s span. As supplied, the sensor is factory
calibrated using an air calibration and this value is stored in the internal electronics. Performing a 1-point
calibration at the upper limit of the specific process will improve the measurement accuracy of low range
readings. Use the following procedure to perform a zero calibration on the Trace DO sensor.
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 1-Point Sample 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.
≡
Calibrate
►
1-Point sample
