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PRES The absolute
pressure of the
sample gas in the
absorption cell
0"-1.0" Hg below
ambient pressure
Check for
pneumatic system
problems. See Sect.
10.6.1. Check for
pressure transducer
problems. See Sect.
10.6.5
SAMPLE FLOW Sample mass flow
rate
720-880 scc/min Check for
pneumatic system
problems. See
Section 10.6.1.
Check for
flowmeter
problems. See
Section 10.6.5
SAMPLE TEMP The temperature of
the sample gas in
the absorption cell
48
o
-50
o
C (After
warm-up)
See Section 10.6.2
BENCH TEMP The temperature of
the Optical Bench
48
o
C (After warm-
up)
See Section 10.6.2
WHEEL TEMP The temperature of
the Gas Filter Wheel
68
o
C (After warm-
up)
See Section 10.6.2
BOX TEMP The temperature
inside the analyzer
chassis
1
o
-5
o
C above
ambient
See Section 10.6.2
DCPS DC Power Supply
reference - A
composite of all
voltages provided
by the DC Power
Supply
2250-2750 mV See Section 10.6.4
TABLE 10.2
10.5 Troubleshooting dynamic problems
Dynamic problems (i.e. problems which only manifest themselves when the analyzer is
monitoring sample gas) can be the most difficult and time consuming to isolate and
resolve. Additionally, analyzer behavior which appears to be a dynamic problem is often
a symptom of a seemingly unrelated static problem. For these reasons, it recommended
that dynamic problems not be addressed until all static problems and warning conditions,
as described in the preceding sections, have been isolated and resolved.
P/N 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 88