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Although the exact procedure may vary from product to product, the calibration process generally involves using the instrument to test samples of one or more known values called âcalibrators.â The results are used to establish a relationship between the measurement technique used by the instrument and the known values.
Answered by Bob Pellissier, president, RKI Instruments Inc., Union City, CA. Calibration frequency is one of the most common subjects of questions regarding the use of gas detection instruments. Regulatory agencies typically refer users to follow manufacturers' recommended protocols for calibration. The calibration frequency for a gas detection instrument depends on how the customer will use it.