HD2020: Class 1 Sound Level Calibrator
Class 1 sound level calibrator according to IEC 60942:2003
HD2020 has an LCD display. Calibration frequency 1000Hz, sound pressure levels 94dB/114dB.
The HD2020 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters (portable and laboratory) and acoustic stations.
It allows calibrating ½” microphones with mechanical dimensions compliant with IEC 61094-1 and IEC 61094-4.
The calibration pressure levels of 94dB and 114dB can be selected by the keypad. The 1000 Hz frequency cannot be changed.
ISO 17025 calibration certificate according to IEC 60942 included