4190 | Sound fields and adaptation microphone cartridges for specific environments, industries, and measurement conditions
Hottinger Brüel & Kjær
Price (excluding tax)
Model Description
■ 1/2 inch 6.3Hz to 20kHz external polarized free sound field Micro hon The 4190 type is designed for high -precision freedom field measurement that requires high sensitivity microphone. Since the 4190 is an external bias, it must be used in combination with the conventional preamplifier. ■ Usage examples ・ High -precision acoustic measurement ・ Use in high quality sound level meters ・ IEC 61672 Equipment based on Class 1 ■ Use of free sound field type microphones In high frequencies, the sound pressure in front of the microphone diaphragm increases due to the effects of reflection and diffraction. If the sensitivity is not corrected, this effect will increase the output voltage. The free sound field optimization means designing the frequency characteristics of the microphone so that the free sound field response at 0 degrees is flattened. The 4190 type is optimized with the protective grid. The free sound field type micro hon is commonly used in a position far from the iconic chamber or a reflector. In addition, it is used in general electrical sound measurement, such as measurement of speakers and microphones. The 4190 type is suitable for combining with class 1 sound level meters, and is suitable for high -precision acoustic measurements that require durable, stable, unevenly uneven freedom microphones (upper limit frequency 20kHz). ■ stability A pressed stainless steel diaphragm guarantees long -term stability and mechanical robustness. The 4190 type can withstand the 1m drop test of IEC 60068-2-32. ■ Union -poles Type 4190 requires external uneven polygical voltage. Therefore, it must be used in combination with the conventional preamplifier. External uneven moles can be used in high temperature environments without greatly changing sensitivity. TEDS can be used by combining with the conventional 2669 preamplifier for the 4190 type. TEDS Microphones are considered a single unit and sealed in a clean room. TEDS is programmed by the actual cartridge, so you can use data immediately. The default TEDS template is IEEE P1451.4, but IEEE 1451.4 can be used by request.
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Part Number
4190
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Handling Company
Hottinger Brüel & Kjær
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