Nivetec AquaSensors AV88, Руководство пользователя

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Thermo Scientific AquaSensors
™
AV88 Universal Analyzer User Guide 21
4.1. 2-Point Buffer Calibration (Sensor Type: pH)
Find the 2-Point Buffer Calibration in the CALIBRATE menu using the UP/DOWN arrows. Press ENTER to
initiate this calibration process. Once the calibration has been initiated it can be aborted by pressing the
escape key before the process is completed.
The sensor should be rinsed in DI water and wiped clean to remove any process solution that would otherwise
contaminate the buffer solution. When the 2-point buffer calibration procedure is started, the analog output is
placed into hold mode and the user is prompted to place the sensor in the first buffer solution. The sensor
value is dynamically updated during this step as shown in Figure 4.4.
Figure 4.4 Sensor value is dynamically updated.
It is best to let the sensor value stabilize in the buffer solution before initiating the calibration. If the temperature
of the sensor is very different from the temperature of the buffer sample, allow some time for the temperature to
equilibrate before initiating the calibration. After the sensor is placed in the first buffer, the ENTER key is
pressed to start the calibration of the first point.
It takes between 5 seconds and two minutes depending on sensor and temperature measurement stability.
Once the calibration has been initiated it can be aborted by pressing the escape key before the process is
completed. See Section 4.2 for an example of an aborted calibration procedure.
2-Point Buffer
Calibrating...
MENU ESC ENTER
10.01 pH
In 1st solution?
MENU ESC ENTER
Calibrate
2-Point Buffer
MENU ESC ENTER