LaMotte COD Plus Colorimeter 1922-EX2 - Manual (Page 22)

GENERAL OPERATING PROCEDURES
The operation of the COD PLUS Colorimeter is controlled by a
microprocessor. The microprocessor is programmed with menu driven software.
A menu is a list of choices. This allows a selection of various tasks for the
colorimeter to perform, such as, scan blank, scan sample, and edit test
sequences. The keypad is used to make menu selections which are viewed in
the display. There are three selections accessible from the MAIN MENU:
Testing Menu
, Editing Menu and PC Link.
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THE KEYPAD
The keypad has 6 buttons which are used to perform specific tasks.
ON This button is used to turn the colorimeter on.
t
This button will cause the display to scroll down through a list of
menu choices. It will move through a list viewed in the display. It
will auto scroll when held down.
s
This button will cause the display to scroll up in a list of menu
choices. It will move through a list viewed in the display. It will
auto scroll when held down.
ENTER
Q
This button is used to select the menu choice adjacent to the “*” in
a menu viewed in the display.
EXIT This button is an exit or escape button. When pressed, the display
will exit from the current menu and go to the previous menu.
OFF This button turns the colorimeter off.
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SAMPLE HOLDERS
The sample chamber is designed for 25 mm round tubes, and a sample holder
for 16 mm COD tubes is included. A 1 cm square UDV cuvette sample holder
is available for the COD PLUS Colorimeter.
Position the COD adapter in the SMART 2 chamber so that the grooves in the
adapter are aligned with the ridges located at the rear of the chamber. The
adapter should be inserted with the small hole, containing the ball plunger, at
the top. The ball plunger can be adjusted with a small screwdriver to control
the tightness of the fit of the tube in the adapter.
22 COD PLUS COLORIMETER 8/02