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Setup Menu Teledyne API – Model T300/T300M CO Analyzer
138
5.9.7. FLOW CALIBRATION
The flow calibration allows the user to adjust the values of the sample flow rates as they
are displayed on the front panel and reported through COMM ports to match the actual
flow rate measured at the sample inlet. This does not change the hardware measurement
of the flow sensors, only the software-calculated values. For details see Section 9.6.3.
5.9.8. TEST CHAN OUTPUT
When activated, output channel A4 can be used in the standard configuration to report
one of the test functions viewable from the SAMPLE mode display. (See also Section
12.5.8.2).
5.9.8.1. SELECTING A TEST CHANNEL FUNCTION FOR OUTPUT A4
The test functions available to be reported are listed in Table 5-9:
Table 5-9: Test Channels Functions available on the T300/T300M’s Analog Output
TEST CHANNEL DESCRIPTION ZERO
FULL SCALE
*
NONE TEST CHANNEL IS TURNED OFF.
CO MEASURE
The demodulated, peak IR detector output
during the measure portion of the GFC Wheel
cycle.
0 mV 5000 mV
CO REFERENCE
The demodulated, peak IR detector output
during the reference portion of the GFC
Wheel cycle.
0 mV 5000 mV
SAMPLE PRESSURE
The absolute pressure of the Sample gas as
measured by a pressure sensor located inside
the sample chamber.
0 "Hg 40 "Hg
SAMPLE FLOW
Sample mass flow rate as measured by the
flow rate sensor in the sample gas stream.
0 cm
3
/m 1000 cm
3
/m
SAMPLE TEMP
The temperature of the gas inside the sample
chamber.
0C 70C
BENCH TEMP
Optical bench temperature.
0C 70C
WHEEL TEMP
GFC Wheel temperature.
0C 70C
O
2
CELL TEMP
1
The current temperature of the O
2
sensor
measurement cell.
n
70C
CHASSIS TEMP
The temperature inside the analyzer chassis.
0C 70C
PHT DRIVE
The drive voltage being supplied to the
thermoelectric coolers of the IR photo-
detector by the Sync/Demod Board.
0 mV 5000 mV
* Maximum test signal value at full scale of test channel output.
1
When option installed.
Once a function is selected, the instrument not only begins to output a signal on the
analog output, but also adds TEST to the list of test functions viewable via the front
panel display.
06864B DCN6314