Common name: Microtech Gefell MK 223
Production Status: In production
The MK 223 is a 1/2” measuring microphone capsule designed for acoustical measurements in research and development and also for industrial use. Some applications include audiometry, the measurement of building acoustics and noise levels. The microphone capsule is designed and manufactured to ensure excellent long-time stability of the electro acoustical parameters. All essential components including the diaphragm are made of nickel and the diaphragm is bonded by a special galvanic process. The measurement capsule MK 223 has a coated diaphragm. That enables to use the capsule in measurement surroundings with elevated environmental pollution. The rear electrode is insulated from the capsule housing by a quartz glass plate. The diaphragm is protected against mechanical damage by a protection grid. The equalisation of the static air pressure between the inside and outside of the MK 223 capsule is by means of a capillary tube rear-vented into the preamplifier. This enables the use of the optional TA 202 dehumidifier. The capsule uses the international standard thread 60 UNS which ensures compatibility with a wide range of calibration equipment and measurement devices available from many manufacturers. Includes wooden box.