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05509F DCN6409 84
11. CALIBRATION
11.1. Factory Calibration
The Model 465 is calibrated to NIST traceable standards on the 0-1 ppm range prior to shipment.
A calibration certificate for your instrument can be purchased from Teledyne API if required.
Teledyne API also recommends that the Model 465 be re-calibrated once a year. Teledyne API
can provide NIST traceable calibration services at our factory or on-site. Please contact our
Customer Service department for details on these services.
11.2. Zero Calibration
A zero calibration can be easily performed in the field, and Teledyne API recommends that this
be done at least annually. See Section 7.2.3.4 for details on performing a zero calibration.