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Microtech Gefell GmbH
Catalog excerpts
MK 255 1/2“ Microphone Capsule for free-field application • WS2F acc. IEC 61094-4 • free-field • 3,5 Hz to 20 kHz • 15 dBA to 149 dB • prepolarized The 1/2“ microphone capsule MK 255 has a freefield response and is therefore optimized for correct acoustic measurements under free-field conditions with 0 degree incidence. The equalization of the static air pressure is by means of a capillary to the preamplifier (rearvented). The microphone capsule is suitable for sound level meters of Type 1 acc. IEC 61672. Delivery Microphone capsule, stainless steel in wooden case 90 mm x 90 mm x 40 mm Options and Accessories Electrostatic actuator instead of standard protection grid Adapter for 1/2“microphone capsules to 1/4“preamplifiers Angle adapter 1/2“ Dehumidifier adapter 1/2“
Open the catalog to page 1
Technical Specifications Transducer type Frequency range zero degree incidence Open-circuit sensitivity Open-circuit sensitivity Max. SPL for 3% THD at 1 kHz Inherent noise Polarization voltage Capacitance at 1 kHz Temperature range, operation Temperature coefficient Static pressure coefficient Diameter Capacitive pressure transducer 3.5 Hz to 20 kHz re 1 V/Pa Peak, with MV 204 @ 120 V RMS, with MV 204 @ 120 V with MV 204 without protection grid with protection grid Length Weight Preamplifier thread Protection grid thread Typical frequency response Microtech Gefell GmbH · Georg-Neumann-Platz ·...
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