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Easy selection Microphone Sets

G.R.A.S. Sound & Vibration logo
 
Click here (or on logo) to go to G.R.A.S. Sound & Vibration web site.
 

Simple     Reliable     Robust
 

Microphone Sets for industrial acoustic applications

½" free-field

¼" free-field

½" pressure

¼" pressure

½" random

  Type 46AE
 Frequency Range
  3.15 Hz - 20 kHz

 Dynamic Range
  17 dBA - 134 dB

 Sensitivity
  50 mV/Pa


  Type 46BE
 Frequency Range
  10 Hz - 100 kHz

 Dynamic Range
  36 dBA - 156 dB

 Sensitivity
  4 mV/Pa

 Included
  3 m Microdot-BNC cable


  Type 46AO
 Frequency Range
  3.15 Hz - 20 kHz

 Dynamic Range
  27 dBA - 147 dB

 Sensitivity
  12.5 mV/Pa


  Type 46BD
 Frequency Range
  10 Hz - 70 kHz

 Dynamic Range
  44 dBA - 164 dB

 Sensitivity
  1.6 mV/Pa

 Included
  3 m Microdot-BNC cable


  Type 46AQ
 Frequency Range
  3.15 Hz - 16 kHz

 Dynamic Range
  17 dBA - 134 dB

 Sensitivity
  50 mV/Pa

 
 
 
 
 

  Type 46AF
 Frequency Range
  3.15 Hz - 20 kHz

 Dynamic Range
  17 dBA - 146 dB

 Sensitivity
  50 mV/Pa


  Type 46BF
 Frequency Range
  10 Hz - 100 kHz

 Dynamic Range
  36 dBA - 172 dB

 Sensitivity
  4 mV/Pa

 Included
  3 m integrated LEMO cable


  Type 46AG
 Frequency Range
  3.15 Hz - 20 kHz

 Dynamic Range
  27 dBA - 164 dB

 Sensitivity
  12.5 mV/Pa


  Type 46BP
 Frequency Range
  10 Hz - 70 kHz

 Dynamic Range
  44 dBA - 180 dB

 Sensitivity
  1.6 mV/Pa

 Included
  3 m integrated LEMO cable


  Type 46AR
 Frequency Range
  3.15 Hz - 16 kHz

 Dynamic Range
  17 dBA - 146 dB

 Sensitivity
  50 mV/Pa

NOTE - All microphone sets include built-in TEDS (Transducer Electronic Data Sheet as proposed by IEEE-P1451.4)
 
  Accessories Sound Source
Sound Calibrator Type 42AB
BNC Cables for CCP(*) sets
3 m BNC-BNC Cable AA0035
10 m BNC-BNC Cable AA0037
      Cables for LEMO(*) sets
      3 m LEMO-LEMO Cable AA0008
      10 m LEMO-LEMO Cable AA0009


* CCP - Constant Current Power is the same as IEPE and CCLD and is compatible with ICP™, DeltaTron®, ISOTRON® etc.
7-pin LEMO - the classic measurement microphone input including a 200 V polarization voltage supply.

(ICP™ is a registered trademark of PCB Group, Inc., DeltaTron® is a registered trademark of Brüel & Kjaer SVM A/S, ISOTRON® is a registered trademark of Endevco Corporation.)

      Click on above images for more details
 


Why does this matter to me? / What is the fuss about?
 

New approach: choosing and using acoustic sensors
 
With unique transducer combinations, G.R.A.S. is introducing a new approach to choosing and using acoustic sensors.
 
Mixing up externally polarised and prepolarised microphones and preamplifiers or using wrong calibration data in the system setup is time consuming and often undiscovered until a whole set of measurement data is analysed and consequently discarded.
 
Pre-assembled sets fix selection problems
 
The Type 46 sets of pre-assembled G.R.A.S. microphones and preamplifiers solves this problem. A carefully selected microphone + pre-amplifier combination is used to obtain the best possible properties and reliability, thus optimising user workflow and minimising typical handling errors.
 
These sets are assembled in a dust-free environment to avoid contamination of the interface between the microphone and preamplifier and are sealed with a label. If desired, this label can be removed and the set dismantled.
 
Easy selection: the hard work has been done
 
These sets have been designed to fulfil typical measurement needs. Use the table to identify the input type you have and then choose the appropriate properties for your specific application.
 
Better value: taking price out of the selection process
 
Simplifying your choices - all G.R.A.S. ½" microphone sets are the same price and all G.R.A.S. ¼" microphone sets are same price (whether LEMO or CCP). Letting you worry about the capability and performance you need and not fiddling with the budget!
 
Plug & Play
 
The microphone sets can be connected directly to all professional measurement systems and 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 to your equipment (with their specific properties, types and calibration data). This convenient feature is especially appreciated by multi-channel users.
 

Cables
 
The CCP sets use high-quality coaxial cables whereas the LEMO sets use a special multi-core shielded cable. Some sets have a 3 m cable included and others have cables as accessories.
 
Note that longer cables will influence the upper frequency and dynamic ranges. More information about this can be found on the www.gras.dk website.
 
Calibration data included
 
All microphone sets are delivered as a unit and are calibrated accordingly. They include calibration charts with sensitivity values and frequency response curves for the complete set. The sensitivity value can therefore be used directly in your system setup.
 
Verification and annual calibration
 
Use a reference sound source for frequent verification of the measurement chain. G.R.A.S. supplies a 114 dB sound calibrator for this purpose (link). Depending on use and your internal quality control requirements, we recommend that these sets are re-calibrated at least every second year.
 
Warranty - extended peace of mind
 
G.R.A.S. offer a 5 year warranty on Type 46 sets.
 
Service and repair
 
Damaged diaphragms, cables or connectors can all be exchanged (same for the microphone capsule and preamplifier unit).
 

Want to learn more?     Contact us or visit G.R.A.S. Sound and Vibration web site.
 


 

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