SQ-4.2
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 Pressure chamber secondary calibration of microphones according to IEC 61094-5  Pressure chamber secondary calibration of dosimeters according to IEC 61252  Pressure chamber secondary calibration of sound level meters and sound level measuring chains according to IEC 61672  True pressure chamber calibration with an acoustic coupler  Calibration of measuring microphones (capacitor and electrets microphones in the sizes ½" and with adapter ¼“ )  Calibration of dosimeters with a diameter of ½"  Supply of a sound pressure level for the calibration of sound level meters and measuring chains  Frequency range 31.5 Hz…16 kHz  Sound pressure level 64 dB…124 dB  Including holder fixture  Including High-End Power Amplifier Range of Use  Certified calibration laboratories  Departments of measuring instrument verification in research and industry, for example test laboratories in the automotive field or in the aviation and space industry  Quality assurance in manufacturing of microphones, sound level meters and dosimeters Wide frequency range 31.5 Hz…16 kHz Low distortion, even at low frequencies High sound pressure level up to 124 dB Symmetric very small pressure chamber  On request: there is solution for 1‘‘ microphones available: the SQ-4.1 electro-aco

SQ-4.2 Electro-Acoustic Coupler System components     SQ 4.2 active electro-acoustic coupler High-End Power amplifier S.M.S.L sAp-8, including power plug and plug adapter Holder fixture Microphone adapter 1/2“ to 1/4 Optional reference standards (recommended):  ½" condenser microphone cartridge type LS2P or WS2P with amplifier  LS-Adapter (open grid for WS2P Microphone) Optional calibration adapter:  Calibration adapter for surface microphones  Calibration adapter for ear simulators Sound field: Pressure chamber Frequency range: Maximum electrical power of the sound source: Diameter...