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.

見積もり依頼

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.

USER SCENARIOS

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

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.

Capacitance
18 pF
Diameter
1/2
Dyn. range
19 – 162 dB
Freq. range
0.07 – 20000 Hz
Inherent noise
19 dB A
Lower limiting frequency -3dB
0.05 Hz
Optimised
Low Frequency
Polarization
Ext polarized
Polarization voltages
200 V
Pressure coefficient
-0.005 dB/kPa
Sensitivity
12.5 mV/Pa
Standards
IEC 61094-4 WS2P
Temperature coefficient
-0.002 dB/ºC
Temperature range
-30 – 300 ℃
Venting
Side
Weight
gram
Sound field
Special
Input type
Classic
Microphone type
Pressure Field