Bacharach PCA3 Spezifikationen PDF herunterladen (Seite 65)

PCA



3 Manual

0024-9473 Rev 4 65

The printout shown in Figure 5-23 shows typical combustion test results of an

analyzer containing O

, CO

LOW

, NO, and NO

sensors. Note that since the SO

sensor is not installed, three stars (* * *) appear in their data fields.

NOTE: Three Stars (***) appear in the data field of sensors that are

not calibrated or installed, and in the data fields of that sensor’s

related calculated values.

NOTE: Three hyphens or dashes (---) indicate that the calculated

data cannot be displayed because the measured data necessary to

make the calculation is out of range (i.e., oxygen level above 16%).

NOTE: Three Xs (i.e., X X X) indicate the sensor is over range.

5.17. Turning Off the Analyzer and Purging

Turn OFF the analyzer by pressing the

I/O

button for at least 2

seconds, or until

two beeps are heard. The unit will count down 5

seconds before shutting down,

giving the operator an opportunity to keep the analyzer turned ON by pressing

the

RUN/HOLD

button.

If the PCA

3 was not purged with fresh air (as described in Ending a Combustion

Test on page 53), then the analyzer may remain ON with its pump running and

display the message “PURGING SENSORS” as the result of combustion gases

still being present inside the analyzer. At this time the operator should ensure

that the probe is removed from the stack, allowing the analyzer to purge itself

with fresh air. The 5-second shutdown sequence will not begin until the gas

levels inside the analyzer drop below predetermined levels.

NOTE: Although not recommended, the purging process can be

bypassed by pressing the I/O button a second time.

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Bacharach PCA3 Spezifikationen Seite 65