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Instruction Manual
IM-106-5500, Original Issue
August 2005
CCO 5500
4-22
Figure 4-6. Check Cell Holder
5. Insert the check cell into the check cell holder and replace and tighten
the screws. The cell can be inserted in either direction. Refer to
Figure 4-7.
Figure 4-7. Check Cell
6. Introducing the check cell may cause an initial major disturbance to the
instrument operation.
7. Wait for the instrument reading to settle - 5 to 10 minutes - and record
the gas measurement with the cell in position.
8. Remove the check cell and wait for the analyzer to return to zero
(another 5 to 10 minutes).
9. Replace the cover on the check cell holder and press the mode key on
the signal processor. The instrument now returns to operation mode.
10. This test can be done with the plant on line, but any pollutant gas
present (also it will probably be residing at a different temperature) will
interfere with the check cell value.
NOTE
Do not insert the check cell in any other mode as this will influence the
recorded rolling averages.
The calibration of the CCO 5500 analyzers is fixed at the point of
manufacture. If gross errors exist this could suggest an instrument
malfunction. If minor errors are observed, please check the procedure and if
necessary return the gas cell for re-certification.
Check Cell
Check Cell Holder
Receiver
Gas Cell Winow