LaMotte COD3 Plus, Руководство оператора

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22 COD3 Plus Colorimeter 10.18
As described previously, the EXIT button allows an exit or escape from the current
menu and a return to the previous menu. This allows a rapid exit from an inner menu
to the main menu by repeatedly pushing the
EXIT button. Pushing at any time
will turn the colorimeter off .
The display may show the following messages:
Battery Status
More choices are available and can be viewed by scrolling
up and/or down through the display.
Header Identifi es the current menu and information on units and
reagent systems if applicable.
Footer 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

TUBES AND CHAMBERS
The colorimeter uses one type of tube (Code 0290) for all test factors.
The handling of the tubes is of utmost importance. Tubes must be clean and free from
lint, fi ngerprints, dried spills and signifi cant scratches, especially the central zone
between the bottom and the sample line.
Scratches, fi ngerprints and water droplets on the tube can cause stray light
interference leading to inaccurate results. Tubes that have been scratched in the light
zone through excessive use should be discarded and replaced with new ones.
Tubes should always be washed on the inside and outside with mild detergent prior to
use to remove dirt or fi ngerprints. The tubes should be allowed to air-dry in an inverted
position to prevent dust from entering the tubes. Dry tubes should be stored with the
caps on to prevent contamination.
After a tube has been fi lled and capped, it should be held by the cap and the outside
surface should be wiped with a clean, lint-free absorbent cloth until it is dry and
smudge-free. Handling the tube only by the cap will avoid problems from fi ngerprints.
Always set the clean tube aside on a clean surface that will not contaminate the tube.
It is imperative that the tubes and light chamber be clean and dry. The outside of the
tubes should be dried with a clean, lint-free cloth or disposable wipe before they are
placed in the meter chamber.