Calibration – Sound Level Meters
About
Accredited calibration of the sound level meter. Measurement method compliant with PN-EN 61672-3: 2007 or PN-EN 61672-3: 2014. The measurement service includes indication of :
โข values of corrections taking into account the deviation of the frequency characteristics of the microphone in free field
โข error at the calibration frequency
โข self noise of a meter with a microphone
โข self noise of a meter with an equivalent impedance
โข frequency correction characteristic by means of an acoustic and an electrical signal
โข long-term stability
โข frequency and time correction characteristics at 1kHz
โข linearity in the reference range (but also in other ranges as requested by the Client)
โข linearity taking into account the influence of the level range switch
โข response to tone impulse
โข peak C sound level
โข overload threshold
โข stability at high signal levels.
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