Specifications

I
NSTALLATION
748410-A
August 1999
9
Chemiluminescense Detector Analyzer Module
Rosemount Analytical NGA 2000
2
At no time should ozonator gas pressure exceed 2070 hPa-gauge (30 psig).
Damage to internal components may occur if this pressure level is exceeded.
Leak Test
The CLD Analyzer Module is completely tested at the factory for gas leakage. The user is
responsible for testing for leakage only at the inlet and outlet fittings on the rear panel.
Periodically, the user should do an internal leak test (with a test procedure chosen by the
user).
Contaminants
White crystal deposits on the windows of the reaction chamber, and the clogging of
capillaries and vent are usually due to sample contaminates such as ammonia reacting with
the high ozone levels and NO components.
To eliminate the contaminates, the sampling system should be reworked or a preventive
maintenance program developed (if dropout is not excessive). Another source of crystalline
formation is contaminated air.
2.5 E
LECTRICAL
C
ONNECTIONS
Electrical installation must be in compliance with National Electrical Code
(ANSI/NFPA 70) and/or any applicable national or local codes.
Refer to Figure 2-3. Two electrical connections are required on the Analyzer Module:
POWER and NETWORK. On the Analyzer Module, two NETWORK connectors are
available, either of which is appropriate for:
1. Interconnection with the Backplane of the Platform. (See instruction manual for the NGA
2000 Platform).
2. "Daisy-chaining" with other NGA 2000 components.
Connect Analyzer Module POWER to 24 VDC, 120 Watt power source, either the Platform
or external power source.
NOTE
NOTE