vn en
GRAS 147AX
GRAS 147AX
GRAS 147AX

The 147AX is a rugged CCP pressure microphone set specialized for hot/cold engine noise measurement in automotive NVH, with three-layer diaphragm protection and new form factor for quick mounting, high harsh environment tolerance.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: Wide for engine noise.
  • Frequency range: Suitable for automotive NVH.
  • Operating temperature: High (hot engine).
  • Connector: BNC.
  • Type: Rugged pressure.
  • TEDS: Yes.
  • Application: Engine noise testing.
Product details
Related Products
GRAS 46AM
GRAS 46AM

The 46AM is a 1/2" CCP free-field microphone set with wide frequency range, 50 mV/Pa sensitivity, suitable for high-frequency sound measurement with extended dynamic range.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 15 dB(A) to 148 dB.
  • Frequency range: 2.6 Hz to 70 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: BNC.
  • Type: Free-field wide frequency.
  • TEDS: Yes.
  • Standard: IEC 61094.
GRAS 46AQ
GRAS 46AQ

The 46AQ is a 1/2" CCP random incidence microphone set, 50 mV/Pa sensitivity, suitable for diffuse sound field measurements in reverberant environments like vehicle cabins.

· Key Specifications:

  • Sensitivity: 50 mV/Pa.
  • Dynamic range: 17 dB(A) to 138 dB.
  • Frequency range: 3.15 Hz to 16 kHz.
  • Operating temperature: -30°C to +85°C.
  • Connector: BNC.
  • Type: Random incidence.
  • TEDS: Yes.
  • Standard: IEC 61094 WS2D.
GRAS 46BG-FV
GRAS 46BG-FV

The 46BG-FV is a 1/4" CCP pressure front vented high pressure microphone set, low sensitivity for high levels with front venting.

· Key Specifications:

  • Sensitivity: Low.
  • Dynamic range: High peak.
  • Frequency range: High.
  • Operating temperature: -30°C to +100°C.
  • Connector: Microdot.
  • Type: Pressure front vented high pressure.
  • TEDS: Yes.
  • Venting: Front.
GRAS 46AN
GRAS 46AN

The 46AN is a 1/2" LEMO free-field low-frequency microphone set with 200V polarization, suitable for infrasound and low-frequency measurements like wind turbine with high sensitivity.

· Key Specifications:

  • Sensitivity: High for low frequency.
  • Dynamic range: Wide low noise.
  • Frequency range: Low frequency optimized.
  • Operating temperature: -30°C to +85°C.
  • Connector: 7-pin LEMO.
  • Polarization: 200 V.
  • TEDS: Yes.
  • Type: Free-field low frequency.
GRAS 46BD-FV
GRAS 46BD-FV

The 46BD-FV is a 1/4" CCP pressure front vented microphone set, ~4 mV/Pa sensitivity, suitable for pressure measurements with front venting in special spaces.

· Key Specifications:

  • Sensitivity: ~4 mV/Pa.
  • Dynamic range: 35 dB(A) to 160 dB.
  • Frequency range: 4 Hz to 70 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: Microdot.
  • Type: Pressure front vented.
  • TEDS: Yes.
  • Venting: Front.
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 46BC
GRAS 46BC

The 46BC is a 1/4" CCP multifield high sensitivity microphone set with 20 mV/Pa, lowest noise floor 24 dB(A), suitable for multi-directional measurement in vehicle cabins or complex environments.

· Key Specifications:

  • Sensitivity: 20 mV/Pa.
  • Dynamic range: 24 dB(A) to 146 dB.
  • Frequency range: 4 Hz to 20 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: Microdot.
  • Type: Multifield high sensitivity.
  • TEDS: Yes.
  • Noise floor: 24 dB(A).
GRAS 46DE
GRAS 46DE

The 46DE is the smallest 1/8" CCP pressure microphone set in the GRAS line, designed for sound measurements in extremely limited spaces, with high durability and shock resistance for industrial applications.

· Key Specifications:

  • Sensitivity: Approximately 1 mV/Pa.
  • Dynamic range: Approximately 50 dB(A) to 172 dB.
  • Frequency range: 20 Hz to 140 kHz.
  • Operating temperature: -30°C to +100°C.
  • Connector: Microdot.
  • Polarization: 0 V.
  • TEDS: Yes.
  • Size: Smallest 1/8".