Handheld Sound Level Calibrator

IEC 60942 Class 2 | Model CAL150

CAL150 handheld sound level calibrator for microphonesThe Larson Davis CAL150 Sound Level Calibrator is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment. It can provide an output level of either 94.0 or 114.0 dB (switch-selectable) at a frequency of 1 kHz.

It has been designed for both field and laboratory use and the accuracy has been calibrated to a reference traceable to the National Institute of Standards and Technology (NIST).

The Larson Davis CAL150 features a stable sound pressure independent of the battery condition. In addition, the Larson Davis CAL150 will turn off automatically to preserve battery and guarantee a stable output.


  •   Output level: 94 or 114 dB
  •   Output frequency: 1 kHz
  •   ½” microphone opening
  •   ANSI S1.40, IEC 60942:2017 and 60942:2003 Class 2 compliant
  •   Internal battery
  •   Output level independent of battery condition


  •   Field calibration or laboratory


  •   Sound level meters
  •   Noise dosimeters
  •   Noise monitoring stations