1/2" low frequency Pressure field Microphone
Low frequency microphone Type 4193 is designed for infrasound measurements over a frequency range of 0.07 Hz to 20 kHz. The microphone is externally polarized and must be used with a classical preamplifier.
Type 4193 Low Frequency Microphone is built for making infrasound measurement in ship engine rooms, in helicopters and in wind-buffeted buildings, due to its extremely low cut-off frequency.
When used with Infrasound Adaptor UC-0211, the lower limiting frequency of the preamplifier is reduced to 0.1 Hz.
Pressure-field microphones are optimised to have a flat frequency response in a pressure field, and work well for making measurements in small, closed couplers or close to hard, reflective surfaces. The microphone is an ideal choice when making:
- Infrasound (infrasonic) measurements
- Sonic boom measurements
- General pressure field measurements
A press-fitted, stainless-steel diaphragm ensure superior long-term stability and mechanical robustness – Type 4193 will withstand the 1 m drop test of IEC 6006-2-32.
Type 4193 requires an external polarization voltage and must therefore must be used with a classical preamplifier. External polarized microphones may be used at higher temperatures without severe changes in sensitivity.
This microphone cartridge is available as a Infrasound Microphone Set with the classical Preamplifier Type 2669 built-in.
The TEDS microphone has been sealed in a clean environment. The TEDS is programmed with the loaded sensitivity of the actual cartridge and the data is therefore readily available.
The default TEDS template is to IEEE P 1451.4 but TEDS to IEEE 1451.4 is available on request.
- 18 pF
- Dyn. range
- 19 – 162 dB
- Freq. range
- 0.07 – 20000 Hz
- Inherent noise
- 19 dB A
- Lower limiting frequency -3dB
- 0.05 Hz
- Low Frequency
- Ext polarized
- Polarization voltages
- 200 V
- Pressure coefficient
- -0.005 dB/kPa
- 12.5 mV/Pa
- IEC 61094-4 WS2P
- Temperature coefficient
- -0.002 dB/ºC
- Temperature range
- -30 – 300 ℃
- Sound field
- Input type
- Microphone type
- Pressure Field