Instruction manual

Instruction Manual
760006-A
September 2001
Rosemount Analytical Inc. A Division of Emerson Process Management Operation 3-1
Model NGA 2000 Platform
SECTION 3
OPERATION
3-1 OVERVIEW
The Platform can perform a narrow set of ac-
tive functions within the NGA 2000 Series
range of operations. That set of functions in-
cludes the following:
• Supply power to a single internal
Analyzer module, and any inte-
gral I/O Modules, if equipped
with an integral power supply
• Output data to the front panel
display
• Hold and maintain network con-
figuration data
Most other functions are performed by other
modules. For instance, the Analyzer mod-
ule(s) performs all functions related to gas
concentration measurement, and therefore
places on the network all related data. This
data (which appears on the Run Mode, Menu
and Diagnostic display screens) is Analyzer
module-specific. Refer to the respective Ana-
lyzer module instruction manuals for descrip-
tions of those operational functions. Multiple
Analyzer module systems require an addi-
tional source of 24 VDC power.
3-2 DISPLAY & 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 keys, four arrow (cursor)
keys and the enter key. The function of each
key varies depending on the installed Ana-
lyzer module, any auxiliary modules installed,
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.
Function Keys - Also called softkeys, are
assigned values depending on the menu or
screen being displayed. The legend is dis-
played above the keys.
Enter Key - Used to confirm a previously en-
tered variable value, to start a selected func-
tion 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 → key can be used.
Cursor Up/Down Keys (↑ or ↓) - Used to
move up or down the lines within a menu or to
increment and decrement number variables.
Cursor Left/Right Keys (← or →) - Used to
move backwards or forwards between the
pages of a menu or to select numeric digits for
adjustment.
Figure 3-1. Platform Front Panel
F1 F2 F3 F4 F5
ROSEMOUNT ANALYTICAL NGA 2000
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
Dis
p
la
y
Status… Main… Channel BasicCal
0.00 Ran
g
e: 1 10.00
7.50
pp
m NO
Enter Key
LCD Display
Function Keys
Cursor Keys