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  • Stephen Biss

Control Tests do not displace Formal Calibration Intervals


Purpose:

To separate conceptually control tests from calibration

To obtain an admission that there are no "assessors" in the province of Ontario

To obtain an admission that the historical maintenance records show a deterioration of performance - deterioration of linearity in this particular instrument

The strategy of using control tests as indication of reliability depends upon completeness of records and transparency

To obtain an admission that at the bottom of the valley in the infrared spectrum at approximately 9.4 microns, your detection limit will certainly be degraded and precision will also suffer in most instances, if you are no longer taking the reading at the absorbant’s maximum.

To obtain an admission as to what may happen if the detector becomes dirty.

#controltest #assessor #linearity #IR #calibration

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