Settings Of The Temperature Offset; One-Point-Calibration „One Point; Automatic Calibration „Automatic - Xylem TM 40 Operating Manual

Select the position you would like to change by using the buttons
Press the -button to accept and save the entry.
To cancel the input dialogue without saving the value press

9.4.2 Settings of the temperature offset

This menu item enables you to set a temperature value offset. For this purpose open the menu item „temp.offs.".
Now an input dialogue will be displayed which facilitates the setting. The offset can be positive or negative.
Select the position you would like to change by using the buttons
Press the -button to accept and save the entry.
To cancel the input dialogue without saving the value press
9.4.3 One-point-Calibration „One point"
Calibrate the measuring signal at this one point using a defined calibration solution or a known set point value,
e. g. determined by a separate method or by means of another laboratory/field instrument. At first, you will be
prompted to dip the sensor into the corresponding calibration medium. After this step press
dialogue. Now, the currently measured value will be displayed. After the measured value has attained a stable
state, accept the dialogue again by pressing
Select the position you would like to change by using the buttons
Press the -button to accept and save the entry.
To cancel the input dialogue without saving the value press
As a result, you will now be given the new calibration values that will be save in the device.
9.4.4 Automatic calibration „Automatic"
The automatic calibration of the conductivity measurement is a single-point calibration.
The temperature-correction-curves for the following conductivity standard solutions are stored in the LF 40:
Conductivity Standard Solution 0,01 N KCl: 1,41 mS/cm (25 °C)
Conductivity Standard Solution 0,1 N KCl:
At first, you will be prompted to dip the sensor into the corresponding calibration medium. After this step press
to accept the dialogue. Now, the currently measured value will be displayed. After the measured value has
attained a stable state, accept the dialogue again by pressing
As a result, you will now be given the new calibration values that will be save in the device.
+
+
. You will now be prompted to enter the set point value.
+
12,9 mS/cm (25 °C)
.
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