Intercomparison on pressure calibration of laboratory standard microphones (EUROMET project no 399)

The project comprises fifteen national metrology institutes in Europe and is carried out under the auspices of EUROMET. An intercomparison has been conducted between the Danish Primary Laboratory on Acoustics, National Physical Laboratory, UK, and Physikalisch Technische Bundesanstalt, Germany, during 1997, where four microphones of type B&K 4160 and 4180 have been exchanged. Each of these laboratories will serve as a centre for four other institutes. The Danish Primary Laboratory on Acoustics will conduct calibrations for Austria, Spain, Sweden and Switzerland.