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Noise Dosimeter

Model No : SV104

The Noise Dosimeter offered by us is the smallest ever device with incredible functionality. The device is used for measuring the noise exposure of a person within a specific period of time. The dosimeter have indestructible MEMS microphone with inbuilt tri-axial accelerometer for vibration shock detection.

It has class beating high resolution, color OLED screen that makes the noise measurement a good experience.


  • Small, compact style dosimeter
  • Easy and friendly user interface
  • Shock resistant MEMS microphone
  • Built-in tri-axial accelerometer for vibration shock (knocking) detection
  • High contrast color OLED display
  • Single measurement range
  • Option for octave real-time analysis
  • Option for audio events recording
  • Voice tagging
  • Automatic calibration start
  • Three virtual measurement profiles
  • Operational time > 40 hours
  • USB 2.0 interface
  • Rechargeable battery

Technical Specifications - Noise Dosimeter

Standards IEC 61252; ANSI S1.25-1991;
Measurement results Lavg/Leq, SPL, Max, Min, SEL, SEL8, PSEL, LEPd, Dose (%), TWA, E, E_8h, Peak, Run Time, Upper Limit Time (ULT), L(C-A), Projected Dose (D_8h)
Weighting filters A, C , Z,
Time Constants Slow, Fast, Impulse
Exchange Rate 2, 3, 4, 5, 6
Microphone Class 2 microphone, 1/2" housing
Measurement Range 55 dBA RMS ÷ 140.1 dBA Peak
Frequency Range 30 Hz ÷ 8 kHz

Technical Specifications - Noise Analyser

1/1 Octave Analysis Real-time analysis in octave band filters
9 filters with center frequencies from 31.5 Hz to 8 kHz (option)

Technical Specifications - Basic Data

Memory 8 GB
Display Color 128 x 64 pixels OLED type
Keyboard 3 push buttons
Communication interfaces USB 2.0 client
Power Supply Ni-MH rechargeable cells operation time > 40 hours (with display off)USB interface 500 mA HUB
Environmental Conditions Temperature from -10oC to 50oC
Humidity up to 95 % RH, non-condensed
Physical Characteristics Dimensions 88 mm x 49.5x 19.2 mm
Weight Approx. 100 grams

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Noise Calibrator

A Noise Calibrator or Acoustic Calibrator is a hand-held device that emits an audible tone of very accurate level and frequency. Before making noise measurements the calibrator is fitted over the meter's microphone and the reading is either checked manually by the user or automatically by the meter.


  • SV 30A & SV 31 class 1 sound calibrators meeting IEC 60942:2003
  • SV 34 class 2 sound calibrator meeting IEC 60942:2003
  • Frequency 1 kHz
  • 94 dB or 114 dB levels (SV 30A)
  • 114 dB level (SV 31, SV 34)
  • Built-in 1/2" reference microphone
  • Microphone presence detection (SV 31, SV 30A)
  • Built-in temperature and static pressure compensation
  • Automatic power on/off
  • Dimensions 65 x 65 x 70 mm
  • 2 x AAA batteries

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Sound Dosemeter

Model No : Sonus GA257

We are a most trusted name among the topmost companies in this business, involved in manufacturing and exporting Sound Dosemeter (Sonus GA257). The dual-measurement feature of the SONUS means two versions of most parameters can be measured simultaneously. It has templates and applications for personal preference. The data-logging instruments have a USB connection and are compatible with the Castle dBdataPro software, where data can be presented in the desired format and copied and pasted into other applications, so you don’t have to change the way you have always completed your reports.


  • Dedicated Occupational Safety Mode
  • User 'Templates' for Personal Preference
  • Hearing Protection Database
  • Voice Note Recording
  • Optional 1/1 Octave Band Analysis

  • Dedicated Application Specific Measurement Templates
  • Statistics
  • Optional 1/3 Octave Band Analysis

dBAirSafety & Environment
  • All of the above

What's supplied with a dBAirSystem?
  • Your chosen dBAirSound Meter and Windshield
  • Acoustic Calibrator (Class 1 or Class 2)
  • Castle Cloud Software License and USB Cable
  • Protective Carry Case for dBAirand Accessories
  • Heavy Duty Tripod (where required)


  • User selectable Exchange rate, Threshold and Criterion level.
  • Save results to internal flash memory
  • Download data to a PC via a USB connection
  • Noise Analysis Software included with the meter
  • Small and light weight fits into small shirt or jacket pocket and also supplied with a strong pocket clip.


  • Used for measuring the noise exposure of a person.

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