JJF 1223-2009 Active National Metrology Technical Specifications JJF

JJF 1223-2009 Calibration Specification for Standing Wave Tubes(Method Using Standing Wave Ratio)

Publish Date: 2009-07-10 Implement Date: 2009-10-10 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: JJF 1223-2009

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 2009-07-10

Implement Date: 2009-10-10

Pages: 20 pages

Scope

This specification is applicable to the measurement of surface acoustic impedance and the calibration of sound-absorbing coefficient acoustic impedance tubes using the standing wave ratio method.

Development Information

Word Count: 20 Thousand words Pages: 20 pages

Referenced Standards

GB/T 3102.5-1993 Quantities and units—Electricity and magnetism GB/T 3102.7-1993 Quantities and units—Acoustics GB/T 18696.1-2004 Acoustics—Determination of sound absorption coefficient and impedance in impedance tubes—Part 1:Method using standing wave ratio JJF 1001-1998 General Terms in Metrology and Their Definitions JJF 1034-2005 JJF 1059-1999

Related Standards

DZ/T 0101.12-1994 Active

DZ/T 0101.12-1994 Geological instrument manufacturing time quota for printed circuit board

Publish Date: 1994-01-27

JJG 204-1980 Active

JJG 204-1980 Meteorological Ventilation Psychrometer

Publish Date: 1980-07-11

SC 53-1980 Active

SC 53-1980 Transfer blade hydraulic steering gear repair quality standard

Publish Date: 1981-07-01

DZ 4-1981 Replaced

\nDZ 4-1981 Method for Compiling Product Models of Geological Instrumentation Equipment

Publish Date: 1981-08-20

SC 69-1982 Active

SC 69-1982 ZSS-12 Flash-type seawater desalination production device technical specifications

Publish Date: 1982-01-20

SC 72-1982 Active

SC 72-1982 Steel Fishing Boat Builder Quality Standards and Mooring Equipment Installation Technical Requirements

Publish Date: 1982-03-30