½" Free-field microphone Type 40AC - Wide-frequency

The Type 40AC is a high precision microphone for laboratory work and as a working standard microphone in calibration laboratories. It covers a frequency range from 3.15 Hz to 40 kHz. Its small size and lower sensitivity make it extremely robust and stable.

The Type 40AC is capable of measuring sound levels up to 160 dB re. 20µPa.

Download PDF Data Sheet: pd_40AC_ver_10_12_03.PDF
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Specifications Type 40AC
Sensitivity

12.5 mV/Pa

Frequency range

3.15 Hz - 40 kHz

Dynamic range

27 dB - 160 dB re. 20µPa

Polarisation voltage

200 V

Outside diameter (with protection grid)

13.2 mm

Length (with and

12.5 mm

without protection grid)

11.6 mm

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