Instrument Menu Structure; Setup Menu - Hach Lange CL17 User Manual

Operation

5.2 Instrument menu structure

5.2.1 Setup menu

Menu option
SIGAVG
CAL ZERO
CAL STD
CAL DEFAULTS
OFFSET
GAIN
DISPLAY TEST
RECMIN
RECMAX
REC ADJUST
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The major menus in the CL17 Analyzer consist of
Press the or
UP DOWN ARROW
information on the functions of each of the menus and the submenus within them.
Day-to-day analyzer functions are accessed from the
menu, press the key, then use the
MENU
Press .
ENTER
Scroll through the
SETUP
to select the displayed menu option. Arrow icons are displayed if the display is
ENTER
editable. Press the
EXIT
information in Table 6 is in the order it appears in the
Table 6 Setup menu options
Description
The SIGAVG feature is used to average readings and prevent erratic recorder output signals.
Press , use the and
ENTER UP
accept the displayed selection. Depending on the value selected, the last 1, 2, or 3 measurements
are averages and the reported concentration is the averaged values. Option 4 is a special filter,
which only reports the maximum value between the current reading and the last. This feature
reduces negative spikes due to bubbles and other abnormalities in the sample. The factory default
is 1. Press to return to the
EXIT
Note: A properly maintained instrument in good working condition will read within the accuracy
specifications presented in
to force an analyzer that is not working correctly to display a correct reading. Calibrations are
intended for very small adjustments only.
This feature is used to offset the instrument zero using a prepared zero standard. If the offset is
too large, a marginal zero (MARG Z) warning will occur. Refer to
This feature is used to adjust the analyzer slope using a prepared standard. If the adjustment is
too large, the analyzer will not accept it and a marginal gain (MARG G) warning will occur. The
new standard will not be accepted and it will have to be checked again using another method to
establish a more exact reading. Refer to
(Calibration Default Settings) Press
defaults and set the Gain to 1.0 and the Offset to 0. Use this feature to remove calibrations that
are causing a MARG G or MARG Z to be displayed.
Press to momentarily display the current Zero correction factor. The factory default is 0.
ENTER
Press to momentarily display the current Gain correction factor. The factory default for gain
ENTER
is 1, however, readings of 0.8 to 1.25 are acceptable.
Press to momentarily display all LCD segments to visually check that the complete display
ENTER
is functioning.
Recorder signal test. Press
and hold it there until the next analysis is complete.
Recorder signal test. Press
and will hold it there until the next analysis is complete.
Note: To hold the signal longer, press the
MAINTENANCE. Press
ENTER
Press to modify the Recorder Minimum and Recorder Maximum values. Use this feature to
ENTER
offset the 4 or 20 mA output signal to force a chart recorder to read zero or full scale in case of a
small discrepancy. Use the
the and
UP DOWN ARROW
changes and return to
SETUP
Note: The numbers on the display are A/D counts and cannot be used to determine the recorder
setting.
keys to access the menus. The sections below give
UP ARROW
menu options using the
key to back out of a menu and return to
keys to select 1, 2, 3, or 4, then press
DOWN ARROW
menu.
SETUP
Specifications on page 3. The calibration function should never be used
Calibration on page
to return the calibration settings back to factory
ENTER
to drive the Recorder output to its minimum (normally 4 mA)
ENTER
to drive the Recorder output to its maximum (normally 20 mA)
ENTER
key then the
MENU
then scroll down to
HOLD OUTPUTS
and keys to select
RIGHT LEFT ARROW
keys to adjust the value. Press
.
, ,
ALARMS RECRDR MAINT
menu. To enter the
SETUP
key to scroll to the
SETUP
and keys. Press
UP DOWN ARROW
. The menu
SETUP
menu.
SETUP
Calibration on page
36.
key to scroll to
DOWN ARROW
and press
ENTER
or
RECMIN RECMAX
to select. Press
ENTER
, and .
SETUP
SETUP
option.
to
ENTER
36.
again.
then use
to accept
EXIT