Sound level calibrator HD202 series

for sound level metersportablelaboratory

HD2022 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters (portable and laboratory) and acoustic stations. It allows calibrating 1/2” (1/4” with HD2020AD4 adapter) microphones with mechanical dimensions compliant with IEC 61094-1 and IEC 61094-4. The generated sound pressure level is equal to 114 dB at 1000 Hz frequency. A LED signals the low battery condition. Advantages: •The 1000 Hz frequency allows calibrating sound level meters with any frequency weighting (LIN, A, B, …), without applying any correction factor. •The generated sound pressure level is indipendent of atmospheric pressure: you don’t need to adjust the value according to static pressure over a wide range of values. •The calibrator can be conveniently used both in laboratory and in the field. The 114 dB sound level allows performing calibrations even in high background noise environments. •Its simplicity of use allows even unskilled staff to use it. ISO 17025 calibration certificate according to IEC 60942 included.