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Instruction Manual
IM-106-5500, Original Issue
August 2005
4-15
CCO 5500
Alarm
A contact output is available to warn of a high
gas concentration. This contact output may be
triggered from any of the four averaging stacks.
Select the source with the ARROW key and
enter it with the ENTER key.
Select the units for the alarm - these may be
different to the units selected for the analog
output.
After the source has been selected, the
instrument requires a level that the output will
be triggered. Set the desired level with the
ARROW keys.
Cal Factor
NOTE
Do not enter this mode without first recording the original cal factor - this value
is displayed in Mode 4. Refer to Calibration Data. The Cal factor will be lost
when this menu option is entered.
During the calibration routine, the instrument
calculates a 'Cal Factor' which sets the basic
calibration of the instrument. This value may be
changed from this mode.
NOTE
As this value controls the calibration of the instrument do not change it without
due consideration.
Plant Status Input
Used to determine whether the plant is operating under correct conditions. If it
is not, plant status will be OFF and the minutes, hours and days averaging
stacks will not be updated. If data is stored while the plant status is OFF
diluted overall readings will be registered.
There is a choice of three controls for plant
status, logic input, serial input and multiple
input, but only one can be used to control plant
status at any one time. The multiple input has
four options that may be configured for plant status; temperature threshold,
oxygen threshold, water vapor threshold, and logic input. Any or all of these
may be used to determine plant status.
Logic Input — If the PS1 and PS2 terminals are linked in the signal
processor the logic contact is made and the plant status is OFF. These
terminals may be linked manually during a plant shut down, or they may be
wired to a switch/contact outside the unit (e.g. a value that opens and
closes the duct). Select this option by pressing ENTER when the 'Plant
Status - Logic' screen is displayed.
5 PARAMETERS
Alarm source 15m
5 PARAMETERS
Alarm mg/Nm3
5 PARAMETERS
Alarm 0000mg/Nm3
5 PARAMETERS
Cal Factor
5 PARAMETERS
Plant Status I/P