TYPE 4971
½-inch Pressure-field Microphone, Prepolarized, 5 Hz – 20 kHz
Pressure-field microphone for precision coupler measurements, random incidence, and free-field measurements with 90°C incidence over a frequency range of 5 Hz to 20 kHz.
견적 요청하기Type 4971 is a high temperature, CCLD pressure-field microphone set optimized for measurements in 125°C. The microphone is ideal for coupler measurements, random incidence measurements and free-field measurements with 90° incidence.
Being prepolarized, it can be used with CCLD input as well as classical input. It has wide frequency and dynamic range and is highly immune to changing environmental conditions.
USE SCENARIOS
- Precision coupler measurements
- Precision-grade sound level meters
- General, random-incidence measurements
- Free-field measurements with 90° incidence
MICROPHONE IS ASSEMBLED USING:
Microphone Type 4971-H-041
Preamplifier Type 1706
Suitable for:
- Random-incidence measurements
- Free-field measurements with 90° incidence
- Pressure-field measurements (5 Hz to 20 k Hz)
- Close to hard reflective surfaces
- Close to sound ports of audio devices
- In flush mountings
- Capacitance
- 14 pF
- Diameter
- 1/2
- Dyn. range
- 19 – 162 dB
- Freq. range
- 5 – 20000 Hz
- Inherent noise
- 18.6 dB A
- Lower limiting frequency -3dB
- 1-3 Hz
- Optimised
- Pressure Field
- Polarization
- Prepolarized
- Polarization voltages
- V
- Pressure coefficient
- -0.0023 dB/kPa
- Sensitivity
- 12.5 mV/Pa
- Standards
- IEC 61094-4 WS2P
- Temperature coefficient
- 0.003 dB/ºC
- Temperature range
- -30 – 150 ℃
- Venting
- Rear
- Weight
- gram
- Sound field
- Pressure-field
- Microphone type
- Pressure Field