Instruction Manual
760000-C
November 2002
2-2 Installation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 CLD
2-3 LOCATION
Install the CLD Analyzer Module in a clean,
weather-protected, vibration-free location free
from extreme temperature variations and mois-
ture. For best results, install the instrument near
the sample stream to minimize sample transport
time.
The analyzer should be installed within
±
15
°
of
horizontal.
NOTE
Unrestricted air flow to the rear of the Ana-
lyzer Module is critical to its performance
and reliability.
Operating ambient temperature is 0
o
C to 45
o
C
(32
o
F to 113
o
F). Temperature change should
not exceed 10
o
C (18
o
F) per hour. The same
temperature range restrictions apply to the loca-
tion of the air and span gas cylinders.
2-4 GASES
a. Overview
See Table 2-1, page 2-2. The CLD Analyzer
Module requires two cylinder gases: 1)
breathing grade air or oxygen and 2) a
standard of accurately known composition
for use as a span gas.
Each gas should be supplied from a cylin-
der equipped with a clean, non-corrosive,
two-stage regulator. A shutoff valve is rec-
ommended.
b. Connections
(See Figure 2-2, page 2-3) Connect inlet
and outlet lines for sample, air, and exhaust
to appropriately labeled fittings on the rear
panel, each of which is a 1/4-inch fer-
rule-type compression fitting.
Stainless steel or Teflon tubing is recom-
mended for the sample line. Exhaust tubing
should be 1/4 inch (6.3 mm) or larger, and
made of stainless steel or Teflon.
MAXIMUM NOx
LEVEL IN PARTS
PER MILLION
GAS SUPPLIED
TO REAR PANEL
AIR INLET
SETTING ON OZONE
PRESSURE GAUGE
(pressure values:
gauge)
SETTING ON SAMPLE
PRESSURE GAUGE
(pressure values:
gauge)
800 Air
690 hPa (10 psig); pro-
vides flow of approxi-
mately 500 cc/min. to
ozone generator
344 hPa (5 psig); pro-
vides flow of approxi-
mately 200 cc/min. to
reaction chamber
2,500 Air
690 hPa (10 psig); pro-
vides flow of approxi-
mately 1000 cc/min. to
ozone generator.
344 hPa (5 psig); pro-
vides flow of approxi-
mately 70 cc/min to
reaction chamber.
10,000 Oxygen
1035 hPa (15 psig); pro-
vides flow of approxi-
mately 1000 cc/min to
ozone generator.
103 hPa (1.5 psig); pro-
vides flow of approxi-
mately 20 cc/min. to
reaction chamber.
CAUTION
.
Externally Limit Sample Flow Rate To Less Than 2200 Cc/Min.
Table 2-1. Gas Specifications
