Measurement microphone sets

Measurement microphone sets

The measurement microphone sets have been combined so they fulfil our users’ typical measurement needs. Independently of your measurement system and application you should be able to find a set that suits your needs. The microphone sets can be connected directly to all professional measurement systems and as indicated they are available for both CCP and 7-pin LEMO inputs.

If your measurement platform supports intelligent transducers according to IEEE 1451.4 (TEDS) you can simply plug in the microphones and they will identify themselves with their specific properties, types and calibration data. A feature especially appreciated by multi-channel users.

The CCP sets use high-quality coaxial cables, whereas the LEMO sets use a special, soft type of multicore shielded cable. Some sets have a 3 m cable included and others have cables as accessories. If extended cables are to be used you should consider the possible influence on the upper frequency and dynamic ranges.

All microphone sets are delivered as a unit and are calibrated accordingly. The sets are delivered with calibration charts including sensitivity values and frequency response curves for the complete set. The sensitivity value can therefore be used directly in your system setup.

For frequent verification of the measurement chain a sound source will be required. G.R.A.S. supplies a 114 dB sound calibrator for this purpose. Depending on the use and your internal quality control requirements we recommend that the sets are recalibrated at least every second year.

For a more accurate verification we recommend calibration with a pistonphone. G.R.A.S. supplies 114dB and 134dB pistonphones.

Further, we recommend calibration of the sound sources agains an extreme reliable reference. G.R.A.S. offers such a service and recommends this calibration every second year.

  1. Constant current power (CCP)
    Constant current power (CCP)
  2. Traditional power supply (LEMO)
    Traditional power supply (LEMO)
  1. 46AE 1/2'' Free-field Set
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 17 dB(A) to 138 dB
    Sensitivity: 50 mV/Pa
    Use: For general acoustic diagnostics

    G.R.A.S. 46AE 1/2'' CCP Free-field Standard Microphone Set

    The G.R.A.S. 46AE is a 1/2" Constant Current Power (CCP) free-field microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V (LEMO) type is G.R.A.S. 46AF.

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  2. 46AD 1/2" Pressure Set, High Sensitivity
    Freq range: 3.15 Hz to 10 kHz
    Dyn range: 18 dB(A) to 138 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 46AD 1/2" CCP Pressure Standard Microphone Set, High Sensitivity

    The G.R.A.S. 46AD is a 1/2" Constant Current Power (CCP) pressure microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V (LEMO) type is G.R.A.S. 46AP.

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  3. 46BL 1/4" Pressure Set, High Sensitivity
    Freq range: 4 Hz to 20 kHz
    Dyn range: 25 dB(A) to 147 dB
    Sensitivity: 18 mV/Pa

    G.R.A.S. 46BL 1/4" CCP Pressure Standard Microphone Set, High Sensitivity

    The 46BL is a high-sensitive, low-noise 1/4" CCP condenser microphone set with rear-venting.

    The set consists of a 40BL 1/4" CCP Pressure Microphone, High Sensitivity and a 26CB 1/4" preamplifier with Microdot connector.

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  4. 46AM 1/2'' Free-field Set, Wide Frequency
    Freq range: 3.15 Hz to 31.5 kHz
    Dyn range: 25 dB(A) to 149 dB
    Sensitivity: 14.5 mV/Pa
    Use: For general acoustic diagnostics

    G.R.A.S. 46AM 1/2'' CCP Free-field Standard Microphone Set, Wide Frequency

    The G.R.A.S. 46AM is a 1/2" Constant Current Power (CCP) free-field microphone set for measuring medium sound pressure levels at a wide range of frequencies. It is terminated with a BNC connector and is TEDS compatible. The equivalent traditional 200 V LEMO type is G.R.A.S. 46AC.

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  5. 46AO 1/2'' Pressure Set
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 25 dB(A) to 150 dB
    Sensitivity: 12 mV/Pa

    G.R.A.S. 46AO 1/2'' CCP Pressure Standard Microphone Set

    The 46AO is a ½" CCP microphone set for wide-frequency pressure measurements. Its LEMO equivalent is 46AG.

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  6. 46AQ 1/2'' Random Incidence Set
    Freq range: 3.15 Hz to 12.5 kHz
    Dyn range: 17 dB(A) to 138 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 46AQ 1/2'' CCP Random Incidence Standard Microphone Set

    The 46AQ is a 1/2" CCP microphone set for random-incidence measurements. Learn More
  7. 46BE 1/4" Free-field Set
    Freq range: 4 Hz to 80 kHz
    Dyn range: 35 dBA to 160 dB
    Sensitivity: 4 mV/Pa
    Use: For general acoustic diagnostics

    G.R.A.S. 46BE 1/4" CCP Free-field Standard Microphone Set

    The G.R.A.S. 46BE is a 1/4" Constant Current Power CCP free-field microphone set for measuring high sound pressure levels at high frequencies. It is terminated with a 10/32 UNC microdot female connector and is TEDS compatible. The equivalent traditional 200 V LEMO type is G.R.A.S. 46BF.

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  8. 46BD 1/4" Pressure Set
    Freq range: 4 Hz to 70 kHz
    Dyn range: 44 dB(A) to 166 dB
    Sensitivity: 1.45 mV/Pa

    G.R.A.S. 46BD 1/4" CCP Pressure Standard Microphone Set

    The 46BD is a 1/4" CCP microphone set for pressure measurements. Learn More
  9. 46BG 1/4" Pressure Set, High Pressure
    Freq range: 3.15 Hz to 70 kHz
    Dyn range: 60 dB(A) to 184 dB
    Sensitivity: 0.25 mV/Pa

    G.R.A.S. 46BG 1/4" CCP Pressure Standard Microphone Set, High Pressure

    The G.R.A.S. 46BG is a ¼” CCP pressure microphone set for measuring very high sound pressure levels. Learn More
  10. 46DD 1/8'' Pressure Set
    Freq range: 6.5 Hz to 70 kHz
    Dyn range: 47 dB(A) to 175 dB
    Sensitivity: 0.62 mV/Pa

    G.R.A.S. 46DD 1/8'' CCP Pressure Standard Microphone Set

    G.R.A.S. 46DD 1/8'' CCP Pressure Microphone Set Learn More
  11. 46AF 1/2'' Free-field Set
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 17 dB(A) to 149 dB
    Sensitivity: 50 mV/Pa
    Use: For general acoustic diagnostics

    G.R.A.S. 46AF 1/2'' LEMO Free-field Standard Microphone Set

    The G.R.A.S. 46AF is a 1/2" Traditional Power (LEMO) free-field microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a 7-pin LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is G.R.A.S. 46AE.

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  12. 46DP 1/8" Pressure Set
    Freq range: 6.5 Hz to 140 kHz
    Dyn range: 46 dB(A) to 191 dB
    Sensitivity: 0.7 mV/Pa

    G.R.A.S. 46DP 1/8" LEMO Pressure Standard Microphone Set

    The 46DP is a 1/8” LEMO microphone set for pressure measurements. Learn More
  13. 46AP 1/2" Pressure Set, High Sensitivity
    Freq range: 3.15 Hz to 10 kHz
    Dyn range: 18 dB(A) to 149 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 46AP 1/2" LEMO Pressure Standard Microphone Set, High Sensitivity

    The G.R.A.S. 46AP is a 1/2" traditional 200 V (LEMO) pressure microphone set for measuring medium sound pressure levels at medium frequencies. It is terminated with a LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is G.R.A.S. 46AD.

    Learn More
  14. 46AC 1/2'' Free-field Set, Wide Frequency
    Freq range: 3.15 Hz to 40 kHz
    Dyn range: 20 dB(A) to 164 dB
    Sensitivity: 12.5 mV/Pa
    Use: For general acoustic diagnostics

    G.R.A.S. 46AC 1/2'' LEMO Free-field Standard Microphone Set, Wide Frequency

    The G.R.A.S. 46AC is a 1/2" Traditional Power LEMO free-field microphone set for measuring medium sound pressure levels at a wide range of frequencies. It is terminated with a 7-pin LEMO connector and is TEDS compatible. The equivalent Constant Current Power (CCP) type is G.R.A.S. 46AM.

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  15. 46AG 1/2'' Pressure Set
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 25 dB(A) to 164 dB
    Sensitivity: 12 mV/Pa

    G.R.A.S. 46AG 1/2'' LEMO Pressure Standard Microphone Set

    The 46AG is a ½” LEMO microphone set for pressure measurements. Learn More
  16. 46AR 1/2'' Random Incidence Set
    Freq range: 3.15 Hz to 16 kHz
    Dyn range: 19 dB(A) 149 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 46AR 1/2'' LEMO Random Incidence Standard Microphone Set

    The 46AR is a ½” LEMO microphone set for random-incidence measurements. Learn More
  17. 46BH 1/4" Pressure Set, High pressure
    Freq range: 10 Hz to 20 kHz
    Dyn range: 54 dB(A) to 193 dB
    Sensitivity: 0.4 mV/Pa

    G.R.A.S. 46BH 1/4" LEMO Pressure Standard Microphone Set, High pressure

    G.R.A.S. 46BH ¼'' LEMO Pressure Microphone Set, High Pressure Learn More
  18. 46BP 1/4" Pressure Set
    Freq range: 4 Hz to 70 kHz
    Dyn range: 39 dB(A) to 169 dB
    Sensitivity: 1.5 mV/Pa

    G.R.A.S. 46BP 1/4" LEMO Pressure Standard Microphone Set

    The 46BP is a ¼” LEMO microphone set for pressure measurements. Learn More
  19. 46BF 1/4" Free-field Set
    Freq range: 4 Hz to 100 kHz
    Dyn range: 35 dB(A) to 172 dB
    Sensitivity: 3.6 mV/Pa
    Use: For general acoustic diagnostics

    G.R.A.S. 46BF 1/4" LEMO Free-field Standard Microphone Set

    The G.R.A.S. 46BF is a 1/4" Traditional Power (LEMO) free-field microphone set for measuring high sound pressure levels at high frequencies. It is terminated with a 7-pin LEMO connector and is TEDS compatible. The quivalent Constant Current Power (CCP) type is G.R.A.S. 46BE.

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