The HD2022 Sound Calibrator is a portable, battery-operated sound source for calibration and check of microphones and sound level meters. It is designed for field use and laboratories and conforms to the requirements in IEC 60942 for a class 2 sound calibrator.
Emission signal is 1 kHz at 114 dB.
The signal is generated by a piezoceramic source inside the acoustic coupler. An internal sensor measures the level in the coupler and a feedback circuit accurately adjusts the level so that the calibration level is virtually independent of ambient conditions like atmospheric pressure, temperature and humidity within the specified range of operation.
The calibrator allows adjustment of 1/2” and 1/4” (with HD2020AD4 adapter).
HD2022 is powered from one 9V alkaline battery (6LR61). If the voltage supplied by the batteries is too low to ensure proper operation, the calibrator will automatically switch off or not switch on.
The cavity accepts standard 1/2” microphones according to IEC 61094-1 and IEC 61094-4.
The HD2020AD4 adapter allows use with 1/4” microphone capsules.
The LOW BATT LED lights when battery charge is insufficient for normal operation.
A piezoceramic generator, feedback sensor and automatic gain control generate the acoustic signal.
The ABS case measures 53 x 43 x 83 mm, weighs 160 g and provides IP64 protection.
The calibrator operates at 0…+40 °C and ≤ 90%RH.
HD2022 Sound level calibrator, class 2, IEC60942, for 1/2' microphones (1/4' with adapter HD2020AD4), 114 dB , 1KHz. Accredia certification included.
HD2020AD4 Calibrator adaptor 1/2' > 1/4' for 1/4' microphones
