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Teledyne API M100E Analyzer Operation Manual Optional Hardware and Software
67
OPERATION WITHIN THE M100E ANALYZER
The CO
2
sensor option is transparently integrated into the core analyzer operation. All functions can be viewed
or accessed through the front panel, just like the functions for SO
2
.
The CO
2
concentration is displayed in the upper right-hand corner, alternating with SO
2
concentration.
Test functions for CO
2
slope and offset are viewable on the front panel display along with the other test
functions of the analyzer.
CO
2
sensor calibration is performed via the front panel CAL function and is performed in a nearly identical
manner as the standard SO
2
calibration. Refer to Section 8.10.2 for more details.
Stability of the CO
2
sensor can be viewed via the front panel (refer to Section 8.10.2.3).
The CO
2
concentration range is 0-20%. Refer to Section 8.10.2.1 for information on calibrating the CO
2
.
PNEUMATIC OPERATION OF THE CO
2
SENSOR
Pneumatically, the CO
2
sensor is placed in line with the sample gas line between the particulate filter and the
analyzer’s sample chamber. It does not alter the gas flow rate of the sample through the analyzer.
(Kicker)
Figure 5-12: Internal Pneumatics with CO
2
ELECTRONIC OPERATION OF THE CO
2
SENSOR
The CO
2
PCA which is mounted to the rear side of the Relay Board Mounting Bracket controls the CO
2
Sensor.
It converts the sensor’s digital output to an analog voltage that is measured with the motherboard and draws 12
VDC from the analyzer via the relay card from which converts to fit the power needs of the probe and its own
onboard logic. It outputs a 0-5 VDC analog signal to the analyzer’s CPU via the motherboard that corresponds
to the concentration of CO
2
measured by the probe.
04515F DCN6048