SV 104IS Intrinsically Safe Noise Dosimeter

The SV 104IS is the intrinsically safe version of the revolutionary personal noise dosimeter, the SV 104. Both instruments offer a new approach to occupational health and safety noise monitoring presenting features such as 1/1 octave band real-time analysis and audio events recording functions which are a new quality in an instrument of this size. All results are clearly displayed on the amazing OLED screen which offers excellent visibility even in full daylight or darkness.

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

The SV 104IS is a cable-free dosimeter and is typically attached to the user’s shoulder, close to the ear using the mounting clips supplied. The instrument works with Svantek’s health and safety software package, “Supervisor”, that provides various tools for data analysis and reporting. The docking station supports data transfer to the PC through the infrared interface as well as handles the battery charging. Rechargeable batteries of SV 104IS are able to power the instrument for 50 hours.


  • 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, light weight and robust case

Standard Kit

The standard kit includes SV104IS noise dosimeter with a SV 27IS shock resistant MEMS and a windscreen with a stainless steel mounting thread. The dosimeter has an inbuilt 64 MB memory and an Infrared interface for communication with PC software (license for PC software is included). Each SV 104IS has its factory calibration certificate and 36-MONTHS WARRANTY CARD for noise dosimeter and LIFE-TIME WARRANTY card for a microphone

Optional Functions

The option for 1/1 OCTAVE real-time analysis allows accurate and correct selection of hearing protectors. When presented as a spectrogram, the 1/1 octave can be used for quick verification of noise sources in the time history. It can be activated at any time, by entering an activation code.

The AUDIO EVENTS RECORDING option works during measurement and is logged in parallel to time history so it can be played back in the PC software. The settings, like triggers or recording time, are adjustable. It can be activated at any time, by entering an activation code.

Optional Accessories

SA 104-1 Docking Station for Single Dosimeter

SA 104-5 Docking Station for 5 Dosimeters

SA 144 Carrying Case for 5 Dosimeters and Docking Station for 5 Units

SA 147 Waterproof Carrying Case for Noise Dosimeter and Single Docking Station

SV 34 Class 2 Acoustic Calibrator 114 dB at 1 kHz

SV 35A Class 1 Acoustic Calibrator 94 / 114 dB at 1 kHz

SV104IS Technical Specifications

Standards IEC 61252 ed1.1 (2002); ANSI S1.25-1991 (R2007);     
Class 2 IEC 61672-1 ed2.0 (2013)
ATEX: EN 50303, EN 60079-0, EN 60079-11, EN 60079-26, certificate number: FTZU 14 ATEX 0055X
IECEx: IEC 60079-0, IEC 60079-11, IEC 60079-26, certificate number IECEx FTZU 15.0001X
Weighting filters A, C and Z
Time constants Slow, Fast, Impulse
Exchange rates 2, 3, 4, 5, 6
Measurement results Run Time (TIME), Lpeak, Lmax, Lmin, L, DOSE (%), Projected Dose D_8h, Projected Dose PrDOSE, Leq, LAV, LE, SEL8, E, E_8h, LEPd, PSEL, Ltm3, Ltm5, Ln statistics, Peak Threshold Counter (PTC), PTP, Upper Limit Time (ULT), TWA, Projected TWA (PrTWA), Lc-a, OVL
Measurement profiles 3
Microphone Class 2 microphone, 1/2"  MEMS type
Measurement range 60 dBA RMS ÷ 140.1 dBA Peak
Frequency range 20 Hz ÷ 10 kHz
Dynamic range 90 dB
Data logging Summary results for the measurement time
Time-history logging of Leq/Max/Min/Peak with 1s logger step
Voice comments Audio records on demand, created before or after measurement, added to measurement file
Audio recording Short audio events recording on trigger, 12 kHz sampling rate (option)
1/1 octave Real-time analysis in octave band filters, Class 1, IEC 61260
 9 filters with centre frequencies from 31.5 Hz to 8 kHz (option)

Basic data

Display 128 x 64 pixels OLED
Ingress protection IP 65
Memory 64 MB
Interfaces Infrared (docking station necessary)
Keyboard 3 push buttons
Power supply Rechargeable cell; operation time > 50 hours1
Environmental conditions Temperature from -10 oC to 50 oC
Humidity up to 95 % RH, non-condensed
Dimensions  88 x 49.5 x 19.2 mm
Weight 117 grams with batteries

 1depends on the dosimeter settings


*Continuous product development and innovation are the policy of our company. Therefore, we reserve the right to change the specifications without prior notice.



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