Acoustic Calibrators

The high reliability of electronic measuring instruments such as sound level meters enables you to make accurate measurements after a simple check with one of our acoustic calibrators. In many cases this check is also carried out after each measurement to validate the results. To make sure an instrument is working correctly, more comprehensive checks are required periodically making the portable acoustic calibrators an excellent choice for making highly accurate, in-field calibration of your measuring instrument.

  • Acoustic calibrator Type 4228

    TYPE 4228

    Pistonphone

    Pistonphone Type 4228 is designed to be used for sound level meter and microphone calibration, and is ideal for in-field calibration over a wide range of temperature, humidity and pressure while still maintaining high accuracy. 

    • Standards : IEC 942 (1998) Class 1
    • Calibration pressure : 124
    • Calibration frequencies : 251.2
    • Calibration accuracy : ± 0.2
    • Transducer : 1-inch, 1/2-inch,1/4-inch and 1/8-inch
  • Acoustic calibrator - Type 4297

    TYPE 4297

    Sound Intensity Calibrator

    Sound intensity calibrator is deisgned for on-site sound-pressure calibration and pressure-residual intensity-index verification

    • Standards : Type 1 IEC 60942 / IEC 60943
    • Calibration pressure : 101.3 kPa
    • Calibration frequencies : 251.2 Hz
    • Calibration accuracy : 0.1%
    • Transducer :
  • Type 3541-A

    TYPE 3541-A

    Sound intensity calibrator

    Our sound intensity calibrator enables calibration of sound intensity measuring instruments by using a coupler designed especially for the purpose.

    • Standards :
    • Calibration pressure :
    • Calibration frequencies :
    • Calibration accuracy :
    • Transducer :
  • Acoustic calibrator Type 4226

    TYPE 4226

    Multifunction acoustic calibrator

    Multifunction Acoustic Calibrator enables simulated free-field calibration of microphones, sound level meters and other acoustical instruments in compliance with standards EN/IEC 60942 / ANSI S1.40.

    • Standards : IEC 942 (1988) Class 1
    • Calibration pressure : 94, 104 and 114
    • Calibration frequencies : 31.5 Hz to 16 kHz in octave steps
    • Calibration accuracy : ± 0.2 at 94 dB
    • Transducer : 1/2-inch
  • 4229_Boxed

    TYPE 4229

    Hydrophone Calibrator

    Hydrophone Calibrator Type 4229 is a precision, high-quality sound pressure source. It delivers an easy method to calibrate sound measuring systems by employing a B&K Hydrophones in air.

    • Standards :
    • Calibration pressure : From 151 to 166 dB re 1uPa, depending on hydrophone
    • Calibration frequencies : 251.2
    • Calibration accuracy : ± 0.7
    • Transducer : Fits Types 8100, 8101, 8103, 8104, 8105 and 8106
  • Polarization Voltage Calibration Unit Type 5008

    TYPE 5008

    Polarization Voltage Calibration Unit

    Type 5008 is a differential DC buffer intended to act as a buffer for high-impedance microphone polarization voltage, allowing the microphone polarization voltage to be measured using a common DC voltmeter.

    • Standards :
    • Calibration pressure :
    • Calibration frequencies :
    • Calibration accuracy :
    • Transducer :
  • Acoustic calibrator Type 4231

    TYPE 4231

    Sound Calibrator

    B&K Class 1 Sound Level Calibrator is designed for accurate in-field acoustic calibration of sound level meters, microphones and other sound measurement equipment.

    • Standards : IEC/EN 60942 (2017) Class 1
    • Calibration pressure : 94 and 114 dB
    • Calibration frequencies : 1000 Hz
    • Calibration accuracy : ±0.2 dB
    • Transducer : 1-inch, 1/2-inch and 1/4-inch