Instruction Manual
760000-C
November 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-1
Model NGA2000 CLD
CLD
Sample flow: 1300 ml/min 200 1500
Sample press: 4.0 hPa 50.0 490.0
Ozonator: OFF – PRESS. SW.
Converter temp: 30.9 C 150.0 500.0
Display
Status…
Main…
Channel
BasicCal
0.00 Range: 1 10.00
7.50
ppm NO
SECTION 3
OPERATION
3-1 OVERVIEW
Once the CLD has been correctly assembled
and installed, the analyzer is ready for opera-
tion.
Before operating the system, verify that the
Leak Checks have been performed in accor-
dance with Section 2-4, page 2-2.
For the remainder of this section, Analyzer
Module interconnection with a Platform or
some interfacing component is assumed. Dis-
play and Keypad information refers to that
which the user can expect to see and do with
regard to the Front Panel of the Platform.
3-2 DISPLAYS & OPERATING KEYS
The LCD screen shows all measurement val-
ues of the analyzer, status values and all user
menu instructions. Operation is performed
with five function softkeys, four arrow (cursor)
softkeys and the enter softkey. The function of
each softkey varies depending on the installed
analyzer module, any auxiliary modules in-
stalled, and the individual menu displayed.
In case of power failure, all user defined spe-
cific module parameters are saved by a bat-
tery powered memory.
Figure 3-1. Measure Mode Display
The
Function Keys
, also called softkeys, are
assigned values depending on the menu or
screen being displayed. The legend is dis-
played above the softkeys.
The
Enter Key
is used to confirm a previously
entered variable value, to start a selected
function or to go to a submenu selected at a
menu line as opposed to the Function Keys.
As an alternate to using the Enter Key to start
a function, the
→
softkey can be used.
The
Cursor Keys
(
↑
or
↓
) are used to move
up or down the lines within a menu or to in-
crement and decrement number variables.
The
Cursor Keys
(
←
or
→
) are used to move
backwards or forwards between the pages of
a menu or to select numeric digits for adjust-
ment.
a. Menu Lines & Softkey Functionality
Menu lines can be selected with the
↑
softkey or the
↓
softkey. The selected line
is displayed as white lettering on a black
background (highlighted). Menus can con-
tain four different types of lines:
Menu Line
– A line ending with three dots
(…) indicates that it leads to a submenu.
The submenu can be activated by press-
ing the
↵
softkey or the
→
softkey when
the line is highlighted.