Photometer Dark Calibration - Teledyne T700 Operation Manual

Teledyne API – Model T700 Dynamic Dilution Calibrator
7.3.5. O

PHOTOMETER DARK CALIBRATION

3
06873E DCN7106
The Dark Calibration Test turns off the Photometer UV Lamp and records any offset
signal level of the UV Detector-Preamp-Voltage to Frequency Converter circuitry. This
allows the instrument to compensate for any voltage levels inherent in the Photometer
detection circuit that might affect the output of the detector circuitry and therefore the
calculation of O concentration.
3
To activate the Dark Calibration feature:
STANDBY
<TST TST>
SETUP X.X
SEQ
GAS
SETUP X.X
CYL
O3
SETUP X.X
MODE ADJ
SETUP X.X
BCAL
DARK
SETUP X.X
SETUP X.X
The DARK CAL procedure progresses automatically
Yes
SETUP X.X
INVALID DARK CAL OFFS=XXXX.X MV
A-CAL=0.000 LPM
GEN STBY SEQ
PRIMARY SETUP MENU
CFG CLK PASS
MORE
SOURCE GAS CONFIG
USER
O3 GAS CONFIG
PHOT
O3 PHOTOMETER CONFIG
CALIBRATING DARK OFFSET
DARK CAL 34% COMPLETE
until ...
DARK CAL
Successful?
No
Calibration and Verification
SETUP
EXIT
EXIT
EXIT
EXIT
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