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The Larson Davis CAL200 Sound Level Calibrator is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment with 1/2 inch microphones. Adapters are available for 1/8, 1/4 and 1/32 inch microphones. The CAL200 meets ANSI and IEC class 1 standards. It is designed for both field and the accuracy has been calibrated to a reference traceable to the National Institute of Standards and Technology (NIST). For annual, accredited calibrations of Larson Davis or Instantel products, please see our Calibrations and Repairs page.  


  • Calibration Sound Pressure Level: 114.0 dB and 94.0 dB

  • Accuracy: +/- 0.2 dB SPL

  • Frequency: 1 kHz +/- 1%

  • Reference Conditions: 101.3 kPa, 23C and 50% Relative Humidity

  • Temperature Range: -10C to 50C (14F to 122F)

  • Relative Humidity Range: 0% to 90% (non-condensing)

  • Battery: 9V alkaline battery

  • Traceable to NIST

  • Class 2 Option Available

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