Instruction Manual
760000-C
November 2002
3-10 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
3-5 BASIC CONTROLS
To access the Basic Controls menu:
Measurement Mode [BasicCal (F5)]
Or
Main Menu
↓
Analyzer basic controls (calibration) &
setup…
Figure 3-9. Basic Controls Menu
The Basic Controls menu is used to set the
range, initiate and exit a quick start and exit
the sleep mode.
Measurement range number:
To select one of the four ranges of the CLD
analyzer, Move the cursor to the “Measure-
ment range number:” line and press the
↵
softkey. Change the range number using the
↑
and
↓
softkeys and then press the
↵
softkey
again to save the selection.
See Section 3-7a, page 3-12 to change the
begin and end concentration values for each
of the four ranges.
Automatic range change control:
When enabled, the CLD analyzer module will
change ranges automatically when the pre-
sent range is exceeded.
Span gas concentration:
Allows setting of the calibration span gas con-
centration. The default is the range upper
limit.
Ozonator Power:
Used to turn off (Disable) the ozonator. For
applications where measurements are made
infrequently but the analyzer is to remain on to
avoid the warm-up period, the CLD would be
placed in Standby mode and the Ozonator
could be Disabled to conserve the life of the
lamp and converter.
NO/NOx (F2)
Press the F2 softkey to toggle the measure-
ment mode between NO and NOx.
ZERO (F3) / SPAN (F4)
To ZERO (F3) or SPAN (F4) the analyzer,
flow the appropriate gas, select the correct
range and press the appropriate softkey. Do a
zero before span!
CLD
7.50 ppm
HOME
SPAN
-- Basic Controls --
Measurement range number: 1
Range upper limit: 10.0 ppm
Automatic range change control: Disabled
Ranges with valid calibration: None
Calibration status: READY
Span gas concentration: 10.0 ppm
Status: STANDBY
Measurement mode: NO
Ozonator status: OFF – PRES. SW.
Ozonator power: Enabled
ZERO
INFO
NO/NOx