Acoustic calibrator CAL250

levelfor sound level metersprecision

Model CAL250 Precision Acoustic Calibrator 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 - 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 Calibration of: - Sound level meters - Noise dosimeters - Noise monitoring stations - Microphone arrays