Calibration Method Ph; Menu Structure; Calibration - Xylem SI Analytics Lab 745 Operating Manual

60
9.6

Calibration method pH

9.6.1 Menu structure

Input
Asymmetrie
Slope
Back

9.6.2 Calibration

Select (CAL) to get to the menu item "Calibration" and then on to the Calibration menu:
> The calibration procedures for the respective sensor type are displayed.
Choose your desired calibration procedure by selecting the respective menu item.
The sensor must be thoroughly cleaned with distilled or deionized water prior to and
between every measurement.
Immerse the sensor into the calibration solution and wait until a stable measured value is reached.
Ensure that the calibration medium is mixed properly and watch for the temperature balance.
9.6.2.1 Data input
Under menu item "Input", you can enter and change the specific characteristics of the connected
sensor, e.g. ones that were previously defined in the lab, individually.
> For this, select the respective submenu item for which the settings should be changed (Asymmetry,
Steepness).
An input dialog will allow you to change the respective calibration/sensor values and their
respective limits. If these are not reached or exceeded, there will be an error message,
which will ask you to enter a value within these limits.
Via (INFO) or (CAL) you select the position to change.
Via (CONF +1) or (LOG -1) you change the position.
(ON/OFF) confirms and saves your setting.
(MEAS) terminates the entry dialog without transferring the value.
9.6.2.2 Temperature offset
Under menu item "Temp.Offs." you can enter an offset for the temperature value.
> Select "Temp.Offs.".
An input dialog allows you to set up the offset. This value can be positive or negative.
Via (CONF +1) or (LOG -1) you change the position.
(ON/OFF) confirms and saves your setting.
(MEAS) terminates the entry dialog without transferring the value.
Calibration
Temp.Offs. Two point Automatic Back
CAL INFORMATION