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Instruction Manual
IM-106-5500, Original Issue
August 2005
3-15
CCO 5500
NOTE
If normalization is not required, the instrument must have the normalizing
parameters for oxygen set.
With an integrated system the pressure data can be taken to the
instrument via the serial data line.
e. Pressure
To correct the data to a standard pressure - normally 14.65 psi (101
kPa), the pressure at the point of measurement needs to be
determined. If the flue pressure is relatively constant through all firing
conditions, then a fixed input may be used. If the pressure is not
constant, it should be measured and brought into the instrument via
the 4-20 mA input within the processor.
NOTE
If normalization is not required, the instrument must have the normalizing
parameters for pressure set to 14.65 psi (101 kPa)(standard level and keypad
input).
With an integrated system the pressure data can be taken to the
instrument via the serial data line.
f. Water Vapor
An 'across the duct' monitor measures the gas concentration under
wet conditions, that is, unlike a sampling system, the gas has not
been preconditioned in any way before the measurement is made.
To normalize it to dry conditions, when the water vapor present is of
a known and relatively fixed level, set the standard level to DRY, and
use a fixed value in the keypad option representing the expected
water vapor produced for the fuel type. If the measurement is not to
be normalized for water vapor, set the standard level to WET.
8. Reset Averages
The average values that are currently
held in the averaging stacks will not be
accurate as configuration has not yet
been completed, these therefore need
resetting using this option. This process will erase the current average
that is held in all of the averaging stacks. Select this option by pressing
the ENTER key and using the Arrow keys.
NOTE
Confirmation is requested before the averages are reset.
If this option is selected after the instruments' first configuration, all data
in the averaging stacks is reset, and the data for as much as the last 30
days will be lost.
5 RESET AVERAGES