PCA
3 Manual
44
0024-9473 Rev 3
CHAPTER 5. OPERATION
5.1. Operating Tips
•
When an analyzer is brought in from a cold vehicle, let it warm up slowly to
minimize condensation. Temperatures below freezing will not damage the
analyzer.
CAUTION:
Although the analyzer itself is not damaged by an
extremely cold environment, the electrochemical sensors may
be damaged. The O
2
sensor’s electrolyte will freeze at
approximately -29 ºC and the other sensors at approximately
-70 ºC. If the analyzer is exposed to an extremely cold
condition, it is strongly suggested that the sensor housings be
examined for hairline cracks. Be aware that a leaking sensor
can cause chemical burns to the skin and possibly damage the
PCB assemblies.
•
Ensure that the analyzer is sampling fresh air when turned ON. Pulling a
stack-gas sample through the analyzer during its warm-up period will not
damage the analyzer, but it will result in incorrect sensor readings, and may
result in sensor error messages appearing after the warm-up cycle
completes.
•
Note that flue-gas condensate is acidic and very corrosive. It is important not
to allow the analyzer’s internal components to come in contact with
condensate for long periods of time.
•
Before each use, inspect the filter element of the water trap / filter assembly.
Replace the filter if it looks dirty. See Replacing the Filter Element on page
87.
•
When sampling flue gas, keep the analyzer above the water trap, and keep
the trap in a vertical position. This will maximize the effectiveness of the trap
and keep liquid condensate from being drawn directly into the analyzer.
•
When liquid condensate is seen inside the water trap, empty the trap before
it becomes full. See Emptying the Water Trap on pages 53 and 87.
•
The analyzer should be purged after performing a combustion test. After
removing probe from the stack, let the pump run for at least 10 minutes to
remove any stack gases and dry any condensate from inside the sensor
chamber and probe assembly. If the analyzer is turned OFF with high levels
of flue gas remaining in the analyzer, then the pump will continue to run and
the message “PURGING SENSORS” will appear on the display until all flue
gas levels fall below predetermined levels.
•
When storing the analyzer, it’s a good idea to empty the water trap and
leave it open to further dry it out.
•
Calibrate the analyzer every 6 months to 1 year to ensure its accuracy.
Summary of Contents for PCA3
Page 23: ...PCA 3 Manual 0024 9473 Rev 3 23 Figure 3 2 Connecting the Probe to the Analyzer...
Page 64: ...PCA 3 Manual 64 0024 9473 Rev 3 Figure 5 23 Printer Alignment and Sample Printout...
Page 84: ...PCA 3 Manual 84 0024 9473 Rev 3 Figure 7 2 Inside View with Rear Case Removed...
Page 86: ...PCA 3 Manual 86 0024 9473 Rev 3 Figure 7 5 Wire Routing Connectors and Solder Connections...
Page 101: ...PCA 3 Manual 0024 9473 Rev 3 101...
Page 102: ...PCA 3 Manual 102 0024 9473 Rev 3...
Page 103: ...PCA 3 Manual 0024 9473 Rev 3 103...
