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Troubleshooting and Service Teledyne API T803 CO2/O2 Analyzer Operation Manual
190
11.3. GAS FLOW PROBLEMS
When troubleshooting flow problems, it is a good idea to first confirm that the
actual flow and not the analyzer’s flow sensor and software are in error, or the
flow meter is in error. Use an independent flow meter to perform a flow check as
described in Section 10.3.4. If this test shows the flow to be correct, check the
pressure sens
ors as described in Section 11.6.8.
In general, flow problems
can be divided into three categories:
Flow is too high
Flow is greater than zero, but is too low, and/or unstable
Flow is zero (no flow)
When troubleshooting flow problems, it is crucial to confirm the actual flow rate
without relying on the analyzer’s flow display. The use of an independent,
external flow meter to perform a flow check as described in Section 10.3.4 is
essential.
The flow dia
g
rams found in a variety of locations within this manual depicting
the T803 in its standard configuration and with options installed, can help in
trouble-shooting flow problems. For your convenience the diagrams are collected
here.
11.3.1. T803 INTERNAL GAS FLOW DIAGRAMS
Figure 11-5: T803 – Internal Gas Flow
07276B DCN6418