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

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Catalogue excerpts

G.R.A.S. 40AK 1/2" Ext. Polarized Intensity Microphone Set Date 10-06-2013. Page 1 of 5 G.R.A.S. 40AK 1/2" Ext. Polarized Intensity Microphone Set Sensitivity: 25 mV/Pa Dynamic range: 20 dBA to 152 dB The 40AK is an IEC 61094-compliant, WS2F ½" externally polarized sound-intensity microphone set. The microphones in the set are two 40AI microphones - two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. This microphone pair has a free-field frequency response that complies with IEC 61043 1993 Class 1 and IEC 60651 Type 1 in the range from 20 Hz to 10 kHz. Introduction The 40AK is an IEC 61094-compliant, WS2F ½" externally polarized sound-intensity microphone set. Read about the prepolarized equivalent [40GK]. The microphones in the set are two 40AI microphones – two phase-matched free-field condenser microphones with extremely well-controlled phase characteristics for use in sound-intensity probes. This microphone pair has a free-field frequency response that complies with IEC 61043 1993 Class 1 and IEC 60651 Type 1 in the range from 20 Hz to 10 kHz.

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G.R.A.S. 40AK 1/2" Ext. Polarized Intensity Microphone Set Date 10-06-2013. Page 2 of 5 The 40AK set also includes solid spacers for 12 mm, 25 mm, 50 mm, and 100 mm intensity-probe configurations, as well as adapters for the ¼" LEMO preamplifier 26AA. The 40AK is a part of the G.R.A.S. LEMO Sound Intensity Probe Type 50AI. 40AK 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...

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G.R.A.S. 40AK 1/2" Ext. Polarized Intensity Microphone Set Date 10-06-2013. Page 3 of 5 The microphone diaphragm, body, and improved protection grid are made of high-grade stainless steel, which 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...

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G.R.A.S. 40AK 1/2" Ext. Polarized Intensity Microphone Set Date 10-06-2013. Page 4 of 5 Microphone cartridge capacity, typical 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. 40AK 1/2" Ext. Polarized Intensity Microphone Set 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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