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Instruction 24-9351
PCA
1.3 Sensor Configurations
TABLE 1-1. PCA SENSOR CONFIGURATIONS
PCA 10 & 40
These basic instruments have the capability of measuring, displaying,
and storing combustion tests. They will also display flue gas Oxygen
content, flue gas Carbon Dioxide (CO
2
) content, air temperature, flue gas
temperature, stack loss, Lambda, and the current fuel selected. The
‘standard’ PCA 10 stores up to 10 combustion tests, while the ‘advanced’
PCA 40 can store up to 100 tests.
PCA 15 & 45 with Draft
In addition to the features of the basic PCAs described above, these instru-
ments have the added capability of measuring, displaying, and saving draft
or differential pressure in either Millibars, Pascals, or Inches-of-Water
Column.
PCA 20 & 50 with Carbon Monoxide Measurement
In addition to the features of the basic PCAs described above, these
instruments have the added capability of measuring, displaying, and
saving Carbon Monoxide (CO) content, as well as calculating CO refer-
enced to 0% Oxygen.
PCA 25 & 55 with Draft and CO Measurement
These instruments combine the features of all the PCAs listed above.
PCA 30 & 60 with CO and Nitric Oxide Measurement
In addition to the features of the basic PCAs with CO measurement, these
instruments have the added capability of measuring, displaying, and
saving Nitric Oxide (NX) content, as well as calculating NX referenced to
0% Oxygen.
1-3
Introduction
PCA Models Sensors Installed
Standard Advanced
PCA Part No.* Part No.** PCA Part No.* Part No.** Stack Temp., CO NX Draft
Model 24- 24- Model 24- 24- Air Temp. & O
2
(
∆∆
∆∆
∆P)
10 7181 7281 40 7241 7251 X
15 7182 7282 45 7242 7252 X X
20 7183 7283 50 7243 7253 X X
25 7184 7284 55 7244 7254 X X X
30 7185 7285 60 7245 7255 X X X
35 7186 7286 65 7246 7256 X X X X
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