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Type 4193 Microphone Cartridge

TYPE 4193

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.

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TYPE 4193

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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
TYPE 4193
Standard IEC 61094
Sound field Pressure field
Polarization voltage 200V
Sensitivity 12.5 mV/Pa
Lower limiting frequency 0.07 Hz
Higher limiting frequency 20000 Hz
Inherent noise 19 dB(A)
Upper limiting of dynamic range 162 dB
Diameter 1/2 inch
Venting Side
Minimum Temperature -30 °C
Maximum Temperature 300 °C
Minimum Temperature -22 °F
Maximum Temperature 572 °F

Stability

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.

Polarization Voltage

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.

TEDS MICROPHONES

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.

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