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.

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Output level: 114 dB
Output frequency: 251.2 Hz
Standard: 1” microphone
IEC 60942-2017 Class 1 compliant
Internal battery
Output level independent of battery condition
Adapters available: 1/2”, 1/4”, 3/8” & 1/8” microphones
Array adaptor for 8 microphones simultaneously
Field calibration or laboratory
Calibration of Sound level meters
Calibration of Noise dosimeters
Calibration of Noise monitoring stations
Calibration of Microphone arrays

Training Partner
Acoustar WHS Training logo
CAL250 Manual
CAL250 Brochure
Related Pages
CAL200 1/2" Class 1 Calibrator
CAL150 1/2" Class 2 Calibrator
Larson Davis Page

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