An acoustic calibrator is a handheld device used to check and calibrate sound level meters, noise dosimeters and other noise measurement instruments by generating a stable reference sound level in a controlled environment. It ensures your instruments are measuring accurately before and after use.

Using an acoustic calibrator helps verify that your noise measurement equipment is functioning correctly, giving you confidence that your measurements meet regulations and standards. Regular calibration helps maintain accuracy and compliance over time.

This Acoustic Calibrator conforms to the IEC 60942:2017 standard and is available with Class 1 or Class 2 performance, depending on your accuracy requirements.

The calibrator produces a precise 94 dB sound pressure level at 1 kHz, which is the internationally recognised reference level for field calibration of noise measurement equipment.

It’s suitable for calibrating:

• Sound level meters

• Noise dosimeters

• Other instruments with standard ½″ microphone capsules used in acoustic measurements.

Very easy, simply attach the calibrator to the microphone of your noise instrument, press the button to activate, and it automatically generates the reference tone. An LED indicator shows operation status.

No, this calibrator runs from a standard 9 V battery, making it portable and ideal for field use as well as laboratory checks.

Yes. It’s designed for standard ½″ microphones, and there are adaptors available if you need to work with smaller microphones (e.g., ¼″).

• Class 1 Calibrator: Offers higher accuracy and tighter tolerances — ideal for professional and compliance‑based calibration.

• Class 2 Calibrator: Suitable for general field checks and routine calibration tasks where extreme precision isn’t essential.
  Both types conform to IEC 60942:2017 but differ in performance tolerances.