Flow Calibration; Test Chan Output; Selecting A Test Channel Function For Output A4; Table 5-9: Test Channels Functions Available On The T300/T300M's Analog Output - Teledyne T300 Operation Manual

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5.9.7. FLOW CALIBRATION

5.9.8. TEST CHAN OUTPUT

5.9.8.1. SELECTING A TEST CHANNEL FUNCTION FOR OUTPUT A4

Table 5-9: Test Channels Functions available on the T300/T300M's Analog Output

TEST CHANNEL
NONE
CO MEASURE
CO REFERENCE
URE
SAMPLE PRESS
SAMPLE FLOW
SAMPLE TEMP
BENCH TEMP
WHEEL TEMP
1
O CELL TEMP
2
CHASSIS TEMP
PHT DRIVE
*
Maximum test signal value at full scale of test channel output.
1
When option installed.
138
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.
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).
The test functions available to be reported are listed in Table 5-9:
DESCRIPTION
TEST CHANNEL IS TURNED OFF.
The demodulated, peak IR detector output
during the measure portion of the GFC Wheel
cycle.
The demodulated, peak IR detector output
during the reference portion of the GFC
Wheel cycle.
The absolute pressure of the Sample gas as
measured by a pressure sensor located inside
the sample chamber.
Sample mass flow rate as measured by the
flow rate sensor in the sample gas stream.
The temperature of the gas inside the sample
chamber.
Optical bench temperature.
GFC Wheel temperature.
The current temperature of the O
measurement cell.
The temperature inside the analyzer chassis.
The drive voltage being supplied to the
thermoelectric coolers of the IR photo-
detector by the Sync/Demod Board.
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.
Teledyne API – Model T300/T300M CO Analyzer
ZERO
0 mV
0 mV
0 "Hg
3
0 cm /m
0°C
0°C
0°C
sensor
2
n
0°C
0 mV
*
FULL SCALE
5000 mV
5000 mV
40 "Hg
3
1000 cm /m
70°C
70°C
70°C
70°C
70°C
5000 mV
06864B DCN6314