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TYPE 4964

½-INCH INFRASOUND MICROPHONE, PREPOLARIZED

Infrasound microphone specifically designed for high-precision, acoustic measurements with high sensitivity in the frequency range of 0.02 Hz to 20 kHz.

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TYPE 4964

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Infrasound Microphone Cartridge Type 4964 is designed for high-precision, acoustic measurements where an infrasound microphone with high sensitivity is required. Being prepolarized, Type 4964 can be used with both CCLD and classical preamplifiers, and makes the microphone especially well-suited for battery operated equipment and operation in environments with high humidity.

  • General noise measurements
  • Wind turbine measurements
  • Sonic boom measurements

File

Description

Type

Languages

Size

½ inch Prepolarized Infrasound Microphone Type 4964

Technical Document English 587 KB
TYPE 4964
Standard IEC 61094
Sound field Free field
Polarization voltage 0V
Sensitivity [mV/Pa] 50 mV/Pa
Lower limiting frequency 0.02 Hz
Higher limiting frequency 20 kHz
Inherent noise 14.2 dB(A)
Upper limiting of dynamic range 146 dB
Diameter 1/2 inch
Venting Rear
Minimum Temperature [°C] -30 °C
Maximum Temperature [°C] 150 °C
Minimum Temperature [°F] -22 °F
Maximum Temperature [°F] 302 °F