LaMotte 2020t BLE Mode D'emploi page 46

A light colored bar will indicate the menu choice. As the menu is scrolled through, the light
colored bar will highlight different menu choices. Pressing the
menu choice that is indicated by the light colored bar.
In the second format the menu choice window takes advantage of the graphical capabilities
of the display. Large format graphic information, such as test results or error messages or
the LaMotte logo is displayed. The top two lines of the display are used to display information
in a large, easy to read format. The menus work in the same way as previously described but
only two lines of the menu are visible at the bottom of the display.
Message or Result Window
As described previously, the
and a return to the previous menu. This allows a rapid exit from an inner menu to the main
menu by repeatedly pushing the
2020t/i BLE off.
The display may show the following messages:
Header
Footer
„ NEGATIVE RESULTS
There are always small variations in readings with analytical instruments. Often these
variations can be observed by taking multiple readings of the same sample. These normal
variations will fall above and below an average reading. Repeated readings on a 0.00
turbidity sample might give readings above and below 0.00. Therefore, negative readings
are possible and expected on samples with concentrations at or near zero. This does not
mean there is a negative concentration in the sample. It means the sample reading was
less than the blank reading. Small negative readings can indicate that the sample was at
or near the detection limit. A large negative reading, however, is not normal and indicates a
problem. Some instruments are designed to display negative readings as zero. In this type
of instrument, if the meter displayed zero when the result was actually a large negative
Header
Main Selection Window First Choice
Footer
Header
Main Selection Window
Footer
button allows an exit or escape from the current menu
EXIT
button. Pushing
EXIT
Battery Status
More choices are available and can be viewed by scrolling up and/or down
through the display.
Identifies the current menu and information on calibration curves and
reagent systems if applicable.
In the data logging mode the number of the data point is displayed and the
total number of data points in the memory will be shown. The footer also
shows current time and battery status
Menu Title
Second Choice
Third Choice
Another
12:00:00 p
And Another
And So On
ENTER
Menu Title
Result or Message
Another
And Another
12:00:00 p
And So On
Last Choice
at any time will turn the
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1/500
button will select the
1/500