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Teledyne API T703/T703U Calibrator Operation Manual Calibration and Verification
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6. CALIBRATION AND VERIFICATION
Basic electronic calibration of the 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 instrument’s 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 6.1).
O
3
Generator: The O
3
generator should be periodically calibrated (see Section 6.2).
6.1. VERIFYING/CALIBRATING THE 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 6-1) or an external source of O
3
(see Figure 6-2). In either case, an external
source of zero air (such as a Teledyne API’s Model 701 Zero Air Generator) is required.
6.1.1. SETUP FOR VERIFYING AND CALIBRATING THE O
3
PHOTOMETER
Note
This operation requires an external reference photometer.
Figure 6-1: Set up for Verifying Optional O
3
Photometer Using Internal O
3
Generator
07223C DCN6572