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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.
The instrumentâs response to the calibration gas serves as the measurement scale or reference point. These detection instruments are used to detect the presence of toxic and combustible substances, as well as oxygen deficiency or oxygen enrichment (a fire and explosion hazard).