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G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure - 5 Pages

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Catalogue excerpts

G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure Date 10-06-2013. Page 1 of 5 G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure Sensitivity: 0.4 mV/Pa Freq resp: 10 Hz to 20 kHz Dynamic range: 54 dBA to 194 dB The 40BH is an IEC 61094 WS3P ¼" externally polarized high-pressure microphone with rear-venting. It is a high-precision Type 1 condenser microphone made according to IEC 61094-4 requirements. Its very low sensitivity and wide frequency response make it ideal for measuring very high sound pressure levels of up to 194 dB. It is extremely robust and reliable and can handle acoustic impulse measurements in frequencies of up to 20 kHz. Introduction The 40BH is an IEC 61094 WS3P ¼" externally polarized high-pressure microphone with rear-venting. 40BH is a high-precision Type 1 condenser microphone made according to IEC 61094-4 requirements. Its very low sensitivity and wide frequency response make it ideal for measuring very high sound pressure levels of up to 194 dB. It is extremely robust and reliable and can handle acoustic impulse measurements in frequencies of up to 20 kHz. 40BH is individually factory-calibrated and delivered with a calibration chart stating its specific open-circuit

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G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure Date 10-06-2013. Page 2 of 5 sensitivity and pressure frequency response. Typical applications and use 40BH is typically used for sound pressure, very high level measurements, and impulse-sound measurements. It is suitable for general purpose acoustic measurements in couplers and at boundaries. The 40BH is a very versatile microphone when connected to the RA0086 Transmitter Adapter for ¼" Microphones. The 40BH becomes a high-impedance sound source when the RA0086 takes a calibration signal directly from the signal generator and...

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G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure Date 10-06-2013. Page 3 of 5 Learn more about G.R.A.S. service program. Calibration Before leaving the factory, all G.R.A.S. microphones are calibrated in a controlled laboratory environment using traceable calibration equipment. Depending on the use, measurement environment, and internal quality control programs, we recommend recalibrating the microphone at least once a year. Learn more about G.R.A.S.' calibration services. Specification Open-circuit sensitivity @ 250 Hz (±2 dB) Dynamic range lower limit (microphone thermal...

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G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure Date 10-06-2013. Page 4 of 5 Humidity range non condensing CE/RoHS compliant, WEEE registered Weight

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G.R.A.S. 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure Date 10-06-2013. Page 5 of 5 Tradition Since the establishment in 1994, G.R.A.S. have been 100% dedicated to developing and manufacturing high-quality measurement microphones and related acoustic equipment. Founded by the Danish acoustics pioneer Gunnar Rasmussen who for more than 60 years has contributed to the world of sound and vibration with his unique ideas and designs. From the first reproducible 1” condenser measurement microphone that enabled quality measurements and instrumentation for acoustic calibration, Mr. Rasmussen’s...

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