Electrical Test; Dark Calibration; Pressure Calibration - Teledyne T300 Operation Manual

Teledyne API – Model T300/T300M CO Analyzer

5.9.4. ELECTRICAL TEST

SAMPLE RANGE=50.0 PPM
<TST TST> CAL
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK
SETUP X.X SECONDARY SETUP MENU
COMM VARS DIAG
Press <TST TST> to view Test Functions.
NOTE: CO MEAS and CO REF will be artificially altered
to enforce a CO reading of 40.0 ppm.
All other Test Functions will report the correct
operational value.

5.9.5. DARK CALIBRATION

5.9.6. PRESSURE CALIBRATION

06864B DCN6314
The electrical test function creates a current, which substitutes the PMT signal, and
feeds it into the preamplifier board. This signal is generated by circuitry on the pre-
amplifier board itself and tests the filtering and amplification functions of that assembly
along with the A/D converter on the motherboard. It does not test the PMT itself. (See
also Section
12.5.7.2).
CO= XX.XX
SETUP
MORE EXIT
EXIT
The dark calibration test interrupts the signal path between the IR photo-detector and the
remainder of the sync/demod board circuitry. This allows the instrument to compensate
for any voltage levels inherent in the sync/demod circuitry that might affect the
calculation of CO concentration. For details see Section 9.6.1.
A sensor at the exit of the sample chamber continuously measures the pressure of the
sample gas. The data are used to compensate the final CO concentration calculation for
changes in atmospheric pressure and are stored in the CPU's memory as the test function
PRES (also viewable via the front panel). For details see Section 9.6.2.
SETUP X.X ENTER PASSWORD
8 1 8
DIAG SIGNAL I/O
PREV NEXT
Continue pressing NEXT until ...
DIAG OPTIC ELECTRICAL TEST
PREV NEXT
DIAG ELEC RANGE=50.0 PPM
<TST TST> CAL
Setup Menu
ENTR EXIT
ENTR EXIT
ENTR EXIT
CO= 40
EXIT
137