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Teledyne API T703 Calibrator Operation Manual T703 Calibration and Verification
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8. T703 CALIBRATION AND VERIFICATION
Basic electronic calibration of the T703 Calibrator is performed at the factory. Normally there is no need to
perform this factory calibration in the field however, the performance of several of the instruments key
subsystems should be verified periodically and if necessary adjusted. These subsystems are:
O
3
Photometer: The O
3
photometer performance should be periodically verified against an external
standard (see Section 8.1).
O
3
Generator: The O
3
generator should be periodically calibrated (see Section 8.2).
8.1. VERIFYING AND CALIBRATING THE T703’S O
3
PHOTOMETER
The accuracy of calibration gas produced by the T703 depends entirely on the accuracy of the photometer;
therefore, it is very important that the photometer is operating properly and accurately.
The verification procedure can be performed using the instruments internal O
3
generator (see Figure 8-1) or an
external source of O
3
(see Figure 8-2). In either case, an external source of zero air (such as a Teledyne API’s
Model 701 Zero Air Generator) is required.
8.1.1. SETUP FOR VERIFYING AND CALIBRATING THE O
3
PHOTOMETER
Note
This operation requires an external reference photometer.
Figure 8-1: Set up for Verifying Optional O
3
Photometer Using Internal O
3
Generator
07223B DCN6378