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G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair - 5 Pages

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Catalogue excerpts

G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair Date 10-06-2013. Page 1 of 5 G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair Sensitivity: 25 mV/Pa Dynamic range: 20 dBA to 152 dB The 40AI is an IEC 61094-compliant, WS2F ½" externally polarized sound-intensity microphone pair. The 40AI microphone pair consists of two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. Their standard mounting threads make them compatible with all the usual available makes of measurement-microphone preamplifiers. Introduction The 40AI is an IEC 61094-compliant, WS2F ½" externally polarized sound-intensity microphone pair. Read about the prepolarized equivalent [40GI]. The 40AI microphone pair consists of two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. Their standard mounting threads make them compatible with all the usual available makes of measurement-microphone preamplifiers. As a microphone pair, the free-field frequency response of the 40AI complies with IEC 61043 1993 Class 1

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G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair Date 10-06-2013. Page 2 of 5 and IEC 60651 Type 1 in the range from 20 Hz to 10 kHz. Two 40AI microphones are included in 40AK microphone set, which is used in the G.R.A.S. LEMO Sound Intensity Probe Type 50AI. 40AI is individually factory-calibrated and delivered with a calibration chart stating its specific open-circuit sensitivity and pressure frequency response. Typical applications and use The 40AI is designed for sound-intensity and sound-power measurements, as well as sound-source localization, which is why it is included in the...

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G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair Date 10-06-2013. Page 3 of 5 makes the microphone resistant to physical damage, as well as corrosion caused by aggressive air or gasses. This, combined with the reinforced gold-plated microphone terminal which guarantees a highly reliable connection, enables G.R.A.S. to offer 5 years warranty against defective materials and workmanship. Learn more about G.R.A.S.' unique warranty policies. Service If you accidentally damage the diaphragm on a G.R.A.S. microphone, we can — in most cases — replace it at a very reasonable cost and with a...

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G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair Date 10-06-2013. Page 4 of 5 Microphone cartridge venting Temperature range, operation Temperature range, storage [dB/°C / dB/°F] Static pressure coefficient @250 Hz Humidity range non condensing Influence of magnetic field @ 80 A/m , 50 Hz Influence of axial vibration @1 m/s² CE/RoHS compliant, WEEE registered Weight

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G.R.A.S. 40AI 1/2" Ext. Polarized Intensity Microphone Pair 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 ingenuity...

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