Turb 430 IR/T
Operation
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4.3.2
Preparing the sample
Venting the sam-
ple
Air bubbles in the sample affect the measuring result to a massive extent be-
cause they have a large scattering effect on the incident light. Larger air bub-
bles cause sudden changes in the measured values whereas smaller air
bubbles are recorded by the instrument as turbidity. Therefore, avoid or re-
move air bubbles:
Avoiding or remov-
ing air bubbles
During sampling, ensure all movement is kept to a minimum
If necessary, vent the sample (ultrasonic baths, heating or adding a sur-
face-active substance to reduce the surface tension)
4.4
General operating principles
This section contains basic information on the operation of the Turb 430 IR/T.
Operating ele-
ments,
display
An overview of the operating elements and the display is given in section 1.2
and section 1.3.
Operating modes,
navigation
An overview of the operating modes of the Turb 430 IR/T and the navigation
through menus and functions can be found in section 4.4.1 and section 4.4.2.
4.4.1
Operating modes
The instrument has the following operating modes:
Measurement
The display indicates measurement data in the measured value display
Calibration
The display indicates a calibration procedure with calibration information
Data transmission
The meter transmits measuring datasets or calibration records to the in-
terface
Configuration
The display indicates a menu with further menus, settings and functions
4.4.2
Navigation
Measured value
display
In the measured value display, open the menu with
<MENU>
.
Menus and dialogs
The menus for settings and dialogs in procedures contain further subele-
ments. The selection is done with the keys
<
V
> <
W
>
.
The current selection is displayed inverse.
Menus
