Calibrator Sound Level Meter ( CAL-150)

Model CAL150
Precision Acoustic Calibrator

IEC 60942 Class 2 Handheld Sound Level Calibrator for ½” microphones at 1000 Hz Used for Sound Level Meters and Noise Dosimeters

The 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
  •   IEC 60942-1:2003 Class 2 compliant
  •   Internal battery
  •   Output level independent of battery condition
  •   Adaptors: 1/4”, 3/8” microphones


  •   Field calibration or laboratory

Calibration of:

  •   Sound level meters
  •   Noise dosimeters
  •   Noise monitoring stations