The HD2022 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters and acoustic stations.
It allows calibrating ½” and ¼” microphones with mechanical dimensions compliant with IEC 61094-1 (“Measurement microphones. Part 1: Specifications for laboratory standard microphones”) and IEC 61094-4 (“Measurement microphones. Part 4: Specifications for working standard microphones”).
The generated sound pressure level is equal to 114 dB at 1000 Hz frequency.
A LED signals the low battery condition.
The HD2022 can be calibrated by a Delta Ohm authorized dealer or laboratories accredited for calibration of sound level generators. Calibrating the instrument means checking that frequency, sound level and signal distortion fall within the limits of tolerance set by the reference standard (IEC 60942:2003).
