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NGA 2000 CLD
Instruction Manual
HAS60E-IM-HW
June 2007
2 - 4 Installation Emerson Process Management GmbH & Co.OHG
Leak Test
The CLD Analyzer Module is completely tested at the
factory for gas leakage (leakage rate - 7.5 hPa/min. with
He or - 2.5 hPa/min. with N
2
). The user is responsible for
leakage testing at the inlet and outlet fittings on the rear
panel minimum twice a year (see Section 4-8).
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 pro-
gram developed (if dropout is not excessive). Another
source of crystalline formation is contaminated air.
NOTE
Contamination is a result of a not properly work-
ing sample handling systrem and is not be cov-
ered by Emerson Process Management warranty.
2-5 ELECTRICAL CONNECTIONS
NOTE
Electrical installation must be in compliance with
the requirements of NAMUR and DIN VDE and/or
any applicable national or local codes (like local
electricity supply enterprises (ESE)).
Refer to figure 2-3. Two electrical connections are re-
quired on the Analyzer Module: POWER and NET-
WORK. On the Analyzer Module, two NETWORK con-
nectors are available, either of which is appropriate for:
1. Interconnection with the Backplane of the Plat-
form. (See Instruction Manual for the NGA 2000
Platform).
2. "Daisy-chaining" with other NGA 2000 compo-
nents.
Connect Analyzer Module POWER to a 24 VDC, 10 A
power source, either the Platform or external power
source.
Figure 2-3: Front Panel Controls and Electrical Connections
Regulator Adjust Slot
Metering Valve
Network
Connection “1”
Network
Connection “2”
Power
Connection
Fuse
T 6A
~
250 V
1 +
2 -
3 GND
24 V
LON
1
LON
2
Polarity
FLOW
BALANCE
SAMPLE
REGULATOR