// Noise Dosimeters


The SV 104IS is an intrinsically safe noise dosimeter with a robust 1/2” MEMS microphone enabling easy calibration using most commonly available acoustic calibrators. A new microphone has a large dynamic range of the 90 dB which allows to measure noise from 60 dBA Leq to 140 dB Peak. The long list of microphone advantages includes also the auto-calibration feature and TEDS memory that stores the calibration info in the microphone itself. The auto calibration means performing acoustic calibration automatically once the microphone is inserted into the calibrator.


  • Shock resistant MEMS microphone with a life-time warranty
  • Intrinsic safety in accordance to ATEX and IECEx
  • Personal Noise Dosimeter conforming to IEC 61252 and ANSI S1.25
  • Type Approval in accordance to Class 2 IEC 61672
  • Single measurement range 60 dBA RMS ÷ 140 dBA Peak
  • L(C-A) calculation
  • Automatic calibration start (auto-calibration)
  • Built-in tri-axial accelerometer for vibration shock (knocking) detection
  • High contrast color OLED display
  • Option for octave real-time analysis
  • Option for audio events recording (wave format)
  • Voice tagging
  • Three virtual measurement profiles
  • Measurement of Laeq and Lcpeak in one profile
  • Operational time > 50 hours
  • Rechargeable battery
  • Extremely compact, lightweight and robust case