Hach DR/2010 Instrument Manual page 37

Table 4 Operating Controls, Indicators and Connections
Item
Name
No.
1 Cell Compartment Cover
2 Wavelength Control
3 Display
4 key
READ
5 key
ZERO
6 key
EXIT
7 /
UP LEFT ARROW
8 key
ENTER
9 /
DOWN RIGHT ARROW
10 /9 key
CONC
11 /6 key
BATT
12 /3 key
USER PRGM
13 /5 key
TIMER
Light shield for sample cell compartment. Contains list of
stored program numbers on underside.
Used to select appropriate wavelength in nanometers for
test parameters.
LCD window divided into three function areas: wavelength,
numeric output and alphanumeric message. Indicates
wavelength, prompts and gives measurement results in
operational modes. Displays menu options when scrolling
through menu with arrow keys. Provides error messages
when invalid entries are made.
Used to start measurement readings of standards and
samples in Momentary mode.
Not necessary in Constant-On mode.
Used to zero the instrument with the blank solution in the
cell holder before measuring the sample.
Each press moves the display up/back one level in the
menu without altering memory or settings. Acts as an
escape key. Exits current menu or edited item without
retaining changes made during the edit.
key Scrolls through selected menus or programs. Moves cursor
to the left (left arrow accessed with SHIFT key).
Used to confirm a prompt or answer "yes" to a displayed
question. Accepts the displayed value. The display then
returns to the next level up in the menu. Also used to enter a
submenu.
key Scrolls through selected menus or programs. Moves cursor
to the right (right arrow accessed with SHIFT key).
Initiates concentration readout mode when used
with
SHIFT
Has numeric key function when not used with
Used to check condition of battery when used with
key. Current battery voltage and battery-life bar graph will
be displayed.
Has numeric key function when
Used to enter a user-program menu when used with
key.
Has numeric function when
Starts timer when used with the
function when
Description
key.
SHIFT
key is not used.
SHIFT
37
key.
SHIFT
SHIFT
key is not used.
SHIFT
SHIFT
key is not used.
key. Has numeric key
SHIFT