DZ/T 0101.12-1994
Active
JJG 991-2017
Active
National Metrology and Inspection Regulations JJG
JJG 991-2017 Audiometric Equipment—Instruments for the Measurement of Aural Acoustic Impedance/Admittance
JJG 991-2017 Audiometric Equipment—Instruments for the Measurement of Aural Acoustic Impedance/Admittance
Basic Information
Standard Code:
JJG 991-2017
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
-
Publish Date:
2017-11-20
Implement Date:
2018-05-20
Pages:
23 pages
Scope
This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of ear acoustic impedance/admittance measurement instruments.
Development Information
Replace the following standards
Referenced Standards
JJG 388-2012 Audiological Equipment Pure-tone Audiometers
JJF 1001-2011 General Terms in Metrology and Their Definitions
JJF 1034-2005
GB/T 4854.1-2004 Acoustics—Reference zero for the calibration of audiometric equipment—Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
GB/T 15953-1995 Instruments for the measurement of aural acoustic impedance/admittance
GB/T 16402-1996 Acoustics—Reference equivalent threshold sound pressure levels for pure tones and insert earphones
IEC 60318-1
IEC 60318-4
IEC 60318-5
IEC 60645-5:2004
GB/T 3102.7-1993 Quantities and units—Acoustics
GB/T 3947-1996 Acoustical terminology
GB/T 25498.3-2010 Electroacoustics—Simulators of human head and ear—Part 3:Acoustic coupler for the calibration of supra-aural earphones used in audiometry
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