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Instruction Manual
748332-F
April 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Startup and Operation 3-5
Model NGA2000 NDIR
DISPLAY MESSAGE DESCRIPTION TYPE
BAROMETER System Barometer WARNING
CASE TEMP Case Temperature WARNING
CHOP SPEED Chopper Speed WARNING
CRUDE NOISE Calculated Noise WARNING
DET SIG Detector Signal WARNING
DET TEMP Detector Temperature WARNING
LIN ERROR Linearizer Error WARNING
N15 VOLTS Power Supply, -15V WARNING
P12 VOLTS Power Supply, +12V WARNING
P15 VOLTS Power Supply, +15V WARNING
P24 VOLTS Power Supply, +24V WARNING
P5 VOLTS Power Supply, +5V WARNING
PERCENT MOD Percent Modulation WARNING
RAW SIGNAL Raw Signal WARNING
SVFLOW Sample Bypass Flow WARNING
SW ERROR Software Error FAILURE
Analyzer Module Set Up, and
Calibration Parameters.
2. Using the ↓ arrow, select Zero
Ranges, press ENTER and, using the
up/down arrows, toggle to
SEPARATE. Do the same for the
Calibrate Ranges selection. Do not
press ESCAPE at any time unless
retention of prior settings is desired.
3. Return to the Main Menu and make
the following selections: Expert
Controls and Setup, Expert Controls,
CAL DATA softkey, FACTORS
softkey, and Range 1 (2, 3, 4) Factors
(do Steps 4 and 5 for each range).
4. Select Zero Offset, press ENTER,
adjust the value to 500000 with the ↑
and ↓ arrow keys, and press ENTER.
Do not press ESCAPE at any time
unless retention of prior settings is
desired.
5. Refer to the Data Sheet in the rear of
this manual for Span Factors as
originally set at the factory. Select
Span Factor, press ENTER, adjust
the value to match the values on the
Data Sheet with the ↑ and ↓ arrow
keys, and press ENTER. If Data
Sheet is not available, enter 0.000015
with the ↑ and ↓ arrow keys, and
press ENTER. Do not press
ESCAPE unless retention of prior
settings is desired.
6. Attempt to recalibrate the Analyzer
Module according to the procedure
outlined at the beginning of Section 3-
5 on page 3-4. If recalibration fails,
return to the Range Factors menu,
readjust factors and try calibrating
again.
Another cause of failure to calibrate is the
following: The value for "Maximum range" is
lower than the upper limit value for the range
in use. See the Range Settings menu for
this information.
Table 3-1. NDIR Analyzer Module Alarms