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Instruction Manual
IM-106-5500, Original Issue
August 2005
4-1
CCO 5500
Section 4 Normal Operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1
Normal Startup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2
Key Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
Program Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-5
Parameter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-5
Normalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-6
Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-6
Check Cell Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-20
Normal Shutdown Procedure . . . . . . . . . . . . . . . . . . . . . . page 4-21
Routine Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-21
INTRODUCTION After the CCO 5500 has been configured, it will measure the gas levels
between the transmitter and receiver and produce an output proportional to
the gas levels. An integral 32-character display also shows the calculated
levels.
The CCO 5500 allows the operator to interrogate the micro-processor to
observe the system parameters and to change them if required.
A menu-based program is used and access is gained by four keys mounted
on the lid of the signal processor.
Measurement Once configuration has been completed, the absorption of IR radiation is
measured and a parameter 'Y' is calculated - refer to “Principles and Modes of
Operation” on page 1-4. This value is used to produce a final concentration of
gas that can be normalized to standard conditions and averaged over a time
ranging from 10 seconds to 30 days.
The instrument computes four averages, any of which can be used to drive
the analog output, or displayed on the integral 32-character LCD.
Calibration During the configuration procedure a calibration is conducted that sets the
system gains to produce a zero or known gas level. Once the routine has
been conducted the calibration of the instrument is fixed by precision filters,
which do not change.
NORMAL STARTUP
PROCEDURE
Power-up the system and wait for 30 minutes. This allows time for the infrared
source to heat up. Once the receiver is detecting a signal a reading will be
seen on the signal processor display. This should be in normal operating
mode, Mode 1 (shown by a number 1 at the top left corner of the LCD); a
reading in vpm, mg/m
3
or Nmg/m
3
will be shown. If this appears, the system is
functioning properly.