GRAS

46AO 1/2" CCP Pressure Standard Microphone Set

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Key Features

  • Frequency Range: 3.15 Hz – 20 kHz
  • Dynamic Range: 25 dB(A) – 150 dB
  • Sensitivity: 12 mV/Pa
  • Mic Size: 1/2"
  • Field Type: Pressure
  • Polarization Connection: 0 V / CCP
  • Interface: BNC


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46AO 1/2" CCP Pressure Standard Microphone Set

The 46AO is a 1/2" CCP microphone set for wide-frequency pressure measurements. Its LEMO equivalent is 46AG.

The 46AO is a high-precision microphone suitable for laboratory work.

Regarding temperature range, see the Specifications. Should higher temperature limits be required, we recommend considering  the GRAS probe microphones where the microphone and preamplifier can be isolated from the hot source.

Key Specifications

Polarization/Connection 0 V / CCP
Frequency range (±1 dB) 5 Hz to 12.5 kHz
Frequency range (±2 dB) 3.15 Hz to 20 kHz
Dynamic range lower limit with GRAS preamplifier 25 dB(A)
Dynamic range upper limit with GRAS preamplifier 150 dB
Set sensitivity @ 250 Hz (±3 dB) 12 mV/Pa
Set sensitivity @ 250 Hz (±3 dB) -38.5 dB re 1V/Pa
Output impedance <50 Ω
Output Voltage Swing, min. @ 24-28 V CCP voltage supply 8 Vp
Power supply min. to max. 2 to 20 mA
Power supply min. to max. (single/balanced) N/A V
DC bias voltage, typ. 12 V
Microphone venting Rear (Front on request)
IEC 61094-4 Designation WS2P
Temperature range, operation -30 to 85 °C / -22 to 185 °F
Temperature range, storage -40 to 85 °C / -40 to 185 °F
Temperature coefficient @250 Hz -0.01 dB/°C / -0.006 dB/°F
Static pressure coefficient @250 Hz -0.007 dB/kPa
Humidity range non condensing 0 to 90 % RH
Humidity coefficient @250 Hz -0.001 dB/% RH
Influence of axial vibration @1 m/s² 66 dB re 20 µPa
TEDS (IEEE 1451.4) 27 v. 1.0
Connector type BNC
Weight 33 g / 1.164 oz

Specifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.

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