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GRAS 47BX
GRAS 47BX
GRAS 47BX

The 47BX is a low profile 1/4" CCP flush-mount microphone set, wide dynamic range from 44 dB to 165 dB, suitable for precise surface measurements with high frequencies.

· Key Specifications:

  • Sensitivity: Standard.
  • Dynamic range: 44 dB to 165 dB.
  • Frequency range: 4 Hz to 70 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: Microdot to BNC.
  • Mounting: Flush-mount.
  • TEDS: Yes.
  • Size: 1/4".
Product details
Related Products
GRAS 47HC
GRAS 47HC

The 47HC is a 1/2" CCP low-noise system, very low noise floor, suitable for low sound measurements with convenient CCP connection.

· Key Specifications:

  • Sensitivity: High.
  • Dynamic range: Low noise.
  • Frequency range: Wide.
  • Noise floor: Very low.
  • Connector: CCP.
  • Polarization: 0 V.
  • Size: 1/2".
  • Application: Low noise testing.
GRAS 147EB
GRAS 147EB

The 147EB is an extremely rugged CCP free-field microphone set for on-road brake noise measurement, withstanding strong impacts and harsh weather, tested over 10,000 real-road miles.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: Wide for brake noise.
  • Frequency range: Suitable for automotive.
  • Operating temperature: Extreme conditions.
  • Connector: BNC.
  • Type: X-rugged free-field.
  • TEDS: Yes.
  • Application: Brake noise testing.
GRAS 46AC
GRAS 46AC

The 46AC is a 1/2" LEMO free-field wide frequency microphone set with 200V polarization, suitable for ultrasonic diagnostics and impulse measurements with low distortion and high resolution from fast diaphragm response.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 15 dB(A) to 148 dB.
  • Frequency range: Wide to ultrasonic.
  • Operating temperature: -30°C to +85°C.
  • Connector: 7-pin LEMO.
  • Polarization: 200 V.
  • TEDS: Yes.
  • Type: Free-field wide frequency.
GRAS 46BF-1
GRAS 46BF-1

The 46BF-1 is a standard 1/4" LEMO free-field microphone set with 200V polarization, suitable for high-frequency and high-level measurements with mini LEMO connector.

· Key Specifications:

  • Sensitivity: ~4 mV/Pa.
  • Dynamic range: 35 dB(A) to 160 dB.
  • Frequency range: 4 Hz to 80 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: 5-pin LEMO mini.
  • Polarization: 200 V.
  • TEDS: Yes.
  • Type: Free-field.
GRAS 46AD
GRAS 46AD

The 46AD is a 1/2" CCP pressure microphone set with high sensitivity 50 mV/Pa, suitable for sensitive sound pressure measurements in couplers or boundaries with low noise floor.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 17 dB(A) to 146 dB.
  • Frequency range: 3.15 Hz to 20 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: BNC.
  • Type: Pressure high sensitivity.
  • TEDS: Yes.
  • Standard: IEC 61094 WS2P.
GRAS 40HF
GRAS 40HF

The 40HF is a 1" low-noise system measuring sound below human hearing threshold, noise floor below -10 dB, suitable for sound power measurements on very quiet products with extremely wide dynamic range.

· Key Specifications:

  • Sensitivity: High.
  • Dynamic range: Below -10 dB to high.
  • Frequency range: 10 Hz to 10 kHz.
  • Noise floor: Very low (below hearing).
  • Connector: Complete system.
  • Polarization: Externally polarized.
  • Size: 1".
  • Application: Quiet product testing.
GRAS 40HT
GRAS 40HT

The 40HT is a 1/2" low-noise probe-like system for confined spaces, very low noise floor, suitable for low sound measurements in tubes or tight areas.

· Key Specifications:

  • Sensitivity: High.
  • Dynamic range: Low noise.
  • Frequency range: Wide.
  • Noise floor: Very low.
  • Connector: Complete system.
  • Polarization: Externally polarized.
  • Design: Probe-like.
  • Application: Confined spaces.
GRAS 46AO-S2
GRAS 46AO-S2

The 46AO-S2 is a very short 1/2" CCP pressure microphone set, 12.5 mV/Pa sensitivity, suitable for measurements in confined spaces with short preamplifier.

· Key Specifications:

  • Sensitivity: 12.5 mV/Pa.
  • Dynamic range: 20 dB(A) to 160 dB.
  • Frequency range: 3 Hz to 10 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: Microdot.
  • Type: Pressure very short.
  • TEDS: Yes.
  • Length: Very short.