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Calibration and Verification Teledyne API – Model T700 Dynamic Dilution Calibrator
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7.3.5. O3 PHOTOMETER DARK CALIBRATION
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.
To activate the Dark Calibration feature:
06873B DCN6388