Precision Sound Level Calibrator

1" Microphones - IEC 60942 Class 1 | Model CAL250

This is product is now discontinued. The newer version is now available: Multi-Frequency Acoustic Calibrator Model CAL1250

Precision Sound Level Calibrator Model CAL250 is a used to calibrate 1" microphones from sound level meters and other sound measurement equipment.

IEC 60942 Class 1 Handheld Sound Level Calibrator for 1" microphones at 251.2 Hz Used for Sound Level Meters and Other Sound Measuring Equipment

The Larson Davis Model CAL250 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment. The CAL250 delivers a full 114.0 dB level output signal @ 251.2 Hz.

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

The Larson Davis CAL250 features a stable sound pressure independent of the battery condition. In addition, the CAL250 will turn off automatically to preserve battery and guarantee a stable output.

Highlights

  • Output level: 114 dB
  • Output frequency: 251.2 Hz
  • Standard: 1" microphone
  • ANSI S1.40, IEC 60942-2017 Class 1 compliant
  • Internal battery
  • Output level independent of battery condition
  • Adapters: 1/2", 1/4", 3/8" & 1/8" microphones
  • Array adaptor for 8 microphones simultaneously

Applications

Field calibration or laboratory

Calibrate

  • Sound level meters
  • Noise dosimeters
  • Noise monitoring stations
  • Microphone arrays