Measurement microphone cartridge MK 112

1"

The 1" measuring microphone capsule MK 112 is designed for acoustical measurements in research and development and also for industrial use. Some applications include audiology, the measurement of building acoustics and noise levels. The measuring microphone capsule is designed and very carefully constructed to ensure excellent long-time stability of the electroacoustical parameters. All essential components including the diaphragm are made of nickel and the diaphragm is bonded by a special galvanic process. The rear electrode is insulated from the cartridge housing by a quartz glass plate. The diaphragm is protected against mechanical damage by a protection grid in which an insulated calibration grid is integrated. This allows convenient measurement of each cartridge’s frequency response curve by applying a well-defined electrostatic field (400 volts/dc, 30 volts/ac) without removing the protection grid or requiring special spacers. The equalization of the static airpressure between the inside and outside of the MK112 capsule is side-vented. The measuring microphone capsule MK112 can be screwed onto all Standard 1/2" threaded amplifiers or sound level meters using adaptor A 63.1.