TYPE 4964

½-inch infrasound microphone, 0.02 Hz to 20 kHz, prepolarized

Designed for high-precision, acoustic measurements where an infrasound microphone with high sensitivity is required.

Solicitar oferta

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.

USE SCENARIOS

  • General noise measurements
  • Wind turbine measurements
  • Sonic boom measurements
Capacitance
14 pF
Diameter
0.52
Dynamic range
14.6 – 146 dB
Frequency range
0.02 – 20000 Hz
Inherent noise
dB A
Lower limiting frequency -3dB
0.02 Hz
Optimised
Free field
Polarization
Prepolarized
Polarization voltages
0 V
Pressure coefficient
-0.01 dB/kPa
Sensitivity
50 mV/Pa
Temperature coefficient
-0.006 db/ºC
Temperature range
-30 – 150 C
Venting
Rear
Weight
gram
Sound field
Free-field
Input type
CCLD IEPE
Microphone type
Free field