Emerson Rosemount CCO 5500, Reference Manual

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This is set and used in a similar manner to the temperature threshold. If the
normalizing water vapor level falls below the threshold, plant status is
OFF . For
plant status
ON
, the water vapor level must be above the threshold.
- Logic Input
Select
YES
or
NO
and press ENTER. For plant status to be
ON
, the logic input (PS1
and PS2) must be open circuit; for plant status to be OFF , the logic input must be
closed circuit. After you configure this option, the menu exits to the Multiple
option. Use the DOWN arrow to select EXIT and press ENTER.
4.10.5 Normalization
Complete the following steps to set the Normalization parameters.
1.
Press ENTER to access one of the four normalizing parameters listed below.
2. Use the arrow keys to cycle through the four options and press ENTER once the
desired option is selected.
a. Temperature
b. Oxygen
c. Pressure
d. Water Vapor
Once selected, each of the above normalizing parameters have the same suboptions: Set
Standard Levels and Set Values . Under Set Values , are three more suboptions that determine
how the instrument reads the data: Analog Input , Serial Input , and Keypad Input .
Set Standard Levels
Each normalizing parameter normalizes the measured gas concentration to standard
conditions of temperature, oxygen, pressure, and water vapor. Set these levels within this
option. Use the arrow keys to change each displayed normalizing standard value.
Temperature
Always use an analog input for temperature correction; this ensures that the flue gas
temperature is being measured continuously and accurately. Connect the analog output
of the temperatue transducer into the Rosemount
™
analyzer and select the analog input
option. This value is used to normalize the gas concentration measurement and to correct
for the effects of temperature on the IR absorption spectrum.
Operation
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