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The 800 system components consist of the following functional groups:
S base model measurement module
S CO-ox model measurement module
S fluidic components
S electronic components
The following illustrations show the measurement module components. Table 1-1
describes these components and their functions.
Preheater The preheater warms the sample to 37°C.
Sensors The sensors detect analytes present in the sample and form the
actual sample path. The sample leaves the sample path through
the measurement module tubing after analysis. Refer to
Appendix I, Operating Principles, for more information about
each sensor.
Sample Ground/
Temperature Sensor
The sample ground/temperature sensor provides an electrical
grounding mechanism for stable sensor readings and also
measures the sample temperature.
Measurement Block The temperature-controlled measurement block contains the
sensors and ensures a constant temperature of 37°C during
analysis.
Spring-loaded Latch The spring-loaded latch keeps the sensors aligned in the
measurement block. The latch locks open for easy removal of
the sensors. The release tab on the latch releases the latch to
close it.
Contact Assembly
The contact assembly provides electrical contacts between the
sensors and the system.