TYPE 4176

½-inch free-field microphone, 6.5 Hz to 12.5 kHz, prepolarized

Designed for measurements as required for sound level meters in accordance with IEC61672 class 1 and ANSI S 1.4 Type 1.

Demande de devis

Type 4176 is a prepolarized ½" Free-field Microphone designed for accurate and reliable sound measurements, as required for sound level meters in accordance with IEC 61672 class 1 and ANSI S 1.4 Type 1. 

USE SCENARIOS

  • Sound measurements to IEC 61672, and ANSI S 1.4-1983 
  •  As a sound level meter microphone

CALIBRATION

The sensitivity of Type 4176 can be calibrated at 250 Hz using Pistonphone Type 4228 with Adaptor DP 0776, or at 1 kHz using Sound Level Calibrator Type 4231. Calibration in an extended frequency range is possible using Multifunction Acoustic Calibrator Type 4226.

Capacitance
12.5 pF
Diameter
1/2
Dynamic range
14 – 142 dB
Frequency range
6.5 – 12500 Hz
Inherent noise
13.5 dB A
Lower limiting frequency -3dB
5 Hz
Optimised
Free field
Polarization
Prepolarized
Polarization voltages
0 V
Pressure coefficient
-0.02 dB/kPa
Sensitivity
50 mV/Pa
Temperature coefficient
-0.004 db/ºC
Temperature range
-30 – 100 C
Venting
Rear
Weight
gram
Sound field
Free-field
Input type
Classic
Microphone type
Free field