6. Calibration of speed measuring devices

6.1 Basic principles. Traceability

Tachometric measurements are in the time-frequency domain, where speed n (expressed in rpm) is related to frequency ν (expressed in hertz) by the relationship :

n = 60 ν

Depending on the equipment to be calibrated, the reference is either a frequency generator or a frequency counter, which must of course be calibrated themselves.

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6.2 Calibration of photoreflective tachometers

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Calibration of speed measuring devices

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Bibliography

(1) - AUDOIN (C.), BERNARD (M.Y.), BESSON (R.), GAGNEPAIN (J.J.), GROSLAMBERT (J.), GRANDVEAUD (M.), NEAU (J.C.), OLIVIER (M.), RUTMAN (J.) - La mesure de la fréquence des oscillateurs. - Masson, 348 p. (1991).
(2) - Groupe métrologie - Guide pour la détermination...

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