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  • Output sound pressure levels: 114dB and 94dB
  • Output frequency: 1000Hz
  • Reference conditions: Temperature 23C (73F) ,1013 mbar,65%RH
  • Accuracy: 0.5dB
  • Power: One 9V battery, 006P or IEC 6F22 or NEDA 1604.
  • Low Battery check: Calibrator will cut sound pressure output if battery voltage
  • falls below acceptable range.
  • The instrument complies with: IEC 942 CLASS 2.
  • Dimensions: 120(L) x 51(W) x 43(H) mm
  • Weight: approx.130g



  1. Insert the microphone under test into the calibrator ¡s microphone cavity, ensure that it is fully inserted (Sound level meters with 1/2¡± microphones can be calibrated with this device).
  2. Slide the range switch to the 94dB position, or the 114dB position as desired. The calibrator generates its signal as soon as the switch is set.
  3. Read the sound level meter ¡s value. The sound level meter should read 94dB or 114dB depending on the calibrator ¡s signal level. If the sound level calibrator does not match the calibrator ¡s signal (within specification), adjust it as explained in the sound level meter ¡s operating instructions.
  4. Slide the range switch to the OFF position and remove the microphone.


Battery replacement

  • Please replace the battery when there is no sound pressure output
  • Open the battery cover to access the 9V battery
  • Remove the old battery and replace with new 9V battery


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