How Often You Should Calibrate A Sound Level Meter
Sound Level Meter Calibration
• Field calibration: Uses an acoustic calibrator on an Optimus sound level meter to output a consistent sound level for the microphone. The software offsets any variation between the calibrator output and the microphone's receiving noise.
• Manufacturer recalibration: Sends the sound level meter and acoustic calibrator to calibrate and verify the instruments. This ensures the performance of the equipment remains the same as when it was manufactured.
• Essential for measuring to any Standard, Regulations, or Guidelines. It provides assurance of consistent measurement, manufacturer's warranty, improved performance, and a longer lifespan.
• Field calibration: Uses the acoustic calibrator before and after each measurement to check against a verified noise source and offset any variation.
• Annual calibration: Some regulations recommend returning a sound level meter every two years and the acoustic calibrator every year.