
Instruction 24-9448 21
Initial Setup
3.21 Run/Hold Screen Format
PCA2 testdata is located in the Run/Hold screen. By pressing the Run/
Hold key, you should hear the pump running and see the word RUN at
the upper-left hand corner of the display. The instrument is continuously
measuring and calculating the data that is shown in the Run/Hold screen.
Press the RUN/HOLD key again, the pump should stop running and the
word HOLD should be shown at the upper-left hand corner of the display.
The instrument will now show the last measured and calculated data
taken before the instrument was placed in HOLD. Use the up and down
arrow keys to scroll through the complete list of measured and calculated
values when the instrument is running or in the hold mode.
The order in which data appears in the Run/Hold screen is as follows:
O
2
= Oxygen
CO = Carbon Monoxide
EFF = Combustion Efciency
CO
2
= Carbon Dioxide
T-STK = Stack Temperature
T-AIR = Ambient/Primary Air Temperature
EA = Excess Air
CO(O) = Carbon Monoxide content referenced to an Oxygen
percentage
NO = Nitric Oxide
NO
2
= Nitrogen Dioxide
NOx = Oxides of Nitrogen (NO and NO
2
combined)
SO
2
= Sulfur Dioxide
NO(O) = Nitric Oxide content referenced ro an Oxygen percentage
NO
2
(O) = Nitrogen Dioxide content referenced to an Oxygen
percentage
NOx(O) = Oxides of Nitrogen content referenced to an Oxygen
percentage
SO
2
(O) = Sulfur Dioxide content referenced to an Oxygen percentage
Note: (O) denotes the current O
2
Reference selected.
Note: Stars (***) appear in measurement and calculation elds of sensors
that are not installed.
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