Teledyne API T703/T703U Calibrator Operation Manual Calibration and Verification
125
O
3
PHOTOMETER DARK CALIBRATION 6.1.4.
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
3
concentration.
SETUP X.X O3 GAS CONFIG
MODE ADJ PHOT EXIT
The DARK CAL procedure progresses automatically
until ...
SETUP X.X DARK CAL 34% COMPLETE
SETUP X.X CALIBRATING DARK OFFSET
SETUP X.X O3 GAS CONFIG
BCAL DARK EXIT
DARK CAL
Successful?
Yes
No
SETUP X.X INVALID DARK CAL OFFS=XXXX.X MV
STANDBY ACT =STANDBY
<TST TST> GEN STBY SEQ SETUP
SETUP X.X PRIMARY SETUP MENU
O3 SEQ CFG CLK PASS MORE EXIT
To Next Page