Troubleshooting Dynamic Problems - Teledyne 401 Instruction Manual

Teledyne API Model 401 O
Table 9-2: Test Function Values (Continued)
Test
Meaning
Function
SAMPLE Sample mass flow rate.
FLOW
SAMPLE The temperature of the
TEMP sample gas in the absorption
cell.
ANA LAMP The temperature of the
TEMP Source Lamp.
IZS LAMP The temperature of the O
GEN Lamp.
BOX TEMP The temperature inside the
analyzer chassis.
DCPS DC Power Supply reference-
-A composite of all voltages
provided by the DC Power
Supply.
O FLOW The flow rate of O
3

9.5 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 is 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.
If all the checks described in the preceding sections have been successfully performed, the
following will provide an itemization of the most common dynamic problems with
recommended troubleshooting checks and corrective actions.
Photometric Calibrator Instruction Manual, 01124, Rev. J1
3
Acceptable Values
700-900 cc./min
1°-5° C
above ambient
52° C
(After warm-up)
48° C
3
(After warm-up)
1°-5° C above
ambient
2400-2600 mV
GEN. 2-5 L/M
3
9-6
Corrective Action for
Unacceptable Values
Check for pneumatic system
problems. See Section 9.6.1.
Check for flowmeter
problems. See Section 9.6.5.
See Section 9.6.2.
See Section 9.6.2.
See Section 9.6.2.
See Section 9.6.2.
See Section 9.6.4.
Adjust pressure regulator to
set proper flow rate.