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Personal noise dosimeter SV 104A

SV 104A is a standards-compliant personal noise dosimeter for occupational noise assessments that minimizes workflow interruptions and improves data reliability. It streamlines monitoring with three independent profiles and time-history logging (TWA, DOSE, LEX,8h, Leq/Peak/Max/Min), while Bluetooth® remote readout—the key upgrade as the successor to SV 104—allows checks without disturbing the worker.

Designed to IEC 61252 and ANSI S1.25-1991 (R2020) and used under ISO 9612, OSHA 29 CFR 1910.95, and MSHA, it supports flexible exchange rates (2/3/4/5/6 dB) and criterion levels. A built-in triaxial vibration sensor flags shock- or motion-induced artefacts, while optional firmware add-ons—1/1-octave, 1/3-octave, and triggered audio recording—aid source recognition and hearing-protection selection.

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Product Highlights

Highlights summarize what is included by default and what can be added later to tailor SV 104A to specific tasks.

  • Noise dosimeter ready to use out of the box: Supplied with essentials for immediate occupational health and safety measurements
  • Fully standards compliant: ISO 9612, OSHA 29 CFR 1910.95, MSHA; designed to IEC 61252 & ANSI S1.25 (R2020)
  • PC software & mobile app included: Free updates
  • Firmware add-ons: Activate anytime, never expire, free updates (optional licenses for: 1/1 octave, 1/3 octave, audio recording)
  • 36-month instrument warranty: Plus extended microphone warranty
  • MEMS microphone with lifetime warranty: Shock-resistant, stable over years
  • Three independent profiles: Parallel recording with separate filters/time constants
  • Time-history logging: Dual-step Leq/Max/Min/Peak
  • Bluetooth® connectivity: Real-time monitoring and alarms via app
  • Built-in vibration sensor: Detects misuse, protects data validity
  • High-contrast OLED: Readable in bright/low light
  • Up to 48 hours operation: Multi-day campaigns
  • Ecosystem & variants: dual-channel SV 102A+ for left/right or under-headset + reference measurements; SV 104IS intrinsically safe kits for hazardous locations.

Features

MEMS Microphone

Patented, Shock-Resistant, and Life-Time Warranty

Svantek’s MEMS (Micro Electro-Mechanical Systems) microphone technology is highly durable and resistant to mechanical shocks. Patented for its robust design, the MEMS microphone provides superior resilience in harsh environments. It consumes significantly less power compared to traditional piezoelectric sensors, which helps extend the device’s battery life. Backed by a lifetime warranty, Svantek’s MEMS microphones ensure long-term reliability and precise performance.
SV104A MEMS Microphone SVANTEK

Frequency Analysis and Audio Recording

Enhanced Noise Source Identification

Identify and analyze noise sources with the SV 104A noise dosimeter's advanced options for audio recording, frequency analysis, and motion detection. This dosimeter performs unattended measurements, but as it is worn by workers, accidental drops or removal can occur. The built-in octave analysis and vibration detection help detect and exclude such artifacts from the data, ensuring more accurate results. Additionally, the audio recording feature allows for identifying unwanted noise sources, like background music, that are unrelated to the work environment.
SV104A Frequency Analysis and Audio Recording SVANTEK

Bluetooth App

Remote Control and Real-Time Monitoring

The SV 104A’s Bluetooth® interface allows for remote control and live monitoring of noise measurements. Using the ASSISTANT PRO app on a smartphone or tablet, professionals can easily start or stop measurements and view real-time results without needing to handle the device directly. The app also triggers an alarm if preset noise limits are exceeded, ensuring immediate awareness and action when necessary.
SV104A Bluetooth App SVANTEK

Auto-Calibration

Simplifying Accurate Measurements

The SV 104A features an auto-calibration function that automatically detects a calibration signal and initiates the calibration process. This eliminates the need for manual calibration, making noise dosimetry easier and more efficient. The device saves calibration data both before and after measurements, ensuring accuracy and traceability in your noise exposure assessments.
SV104A Auto-Calibration SVANTEK

Inbuilt Vibration Sensor

Ensuring Accurate Noise Measurement

The SV 104A is equipped with an inbuilt tri-axial vibration sensor that detects mechanical shocks and vibrations affecting noise measurements. This sensor identifies moments when the dosimeter is not being used properly, such as when dropped or mishandled. These incidents are marked in the time history, allowing professionals to easily exclude inaccurate data from the dose calculation, ensuring more reliable and precise results.
SV104A Inbuilt Vibration Sensor SVANTEK
SV104A MEMS Microphone SVANTEK

MEMS Microphone

Patented, Shock-Resistant, and Life-Time Warranty

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SV104A Frequency Analysis and Audio Recording SVANTEK

Frequency Analysis and Audio Recording

Enhanced Noise Source Identification

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SV104A Bluetooth App SVANTEK

Bluetooth App

Remote Control and Real-Time Monitoring

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SV104A Auto-Calibration SVANTEK

Auto-Calibration

Simplifying Accurate Measurements

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SV104A Inbuilt Vibration Sensor SVANTEK

Inbuilt Vibration Sensor

Ensuring Accurate Noise Measurement

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Catalogue

SV 104A Personal Noise Dosimeter

Key technical details include a MEMS microphone with a lifetime warranty, designed for durability and precision, even in harsh industrial environments. The microphone is resistant to shocks and drops, ensuring long-term stability and measurement accuracy. The SV 104A also offers an extensive measurement range, from 43 dBA to 141 dBA, covering a wide spectrum of noise levels encountered in various industries.

Applications

Occupational Noise

Noise Measurements for Regulatory Compliance

The SV 104A personal noise dosimeter is designed for occupational noise measurements in accordance with standards such as ISO 9612, OSHA 29 CFR 1910.95, MSHA, and ACGIH. It ensures compliance with OSHA's noise exposure regulations, which define permissible noise limits and outline the requirements for hearing conservation programs. The dosimeter accurately measures personal noise exposure levels, including the 8-hour Time-Weighted Average (TWA) of 90 dBA and the action level of 85 dBA, helping companies assess noise risks and implement effective hearing conservation measures. This makes the SV 104A an essential tool for ensuring workplace safety and maintaining regulatory compliance.

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SV104A Occupational Noise SVANTEK

Videos

New generation of noise dosimeters

The story of SV104 noise dosimeter, the first dosimeter with a MEMS microphone

Noise Dosimeter SV 104A

Discover unique features of the SV 104A noise dosimeter

Noise dosimeters application

How loud a Speedway match is? See how the dosimeter is used in practice

Configuration for noise measurement

Use of the Supervisor Software with noise dosimeters

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    Specifications

    SV 104A – Personal noise dosimeter

    Applications

    Sound measurements
    Occupational noise

    Hardware Features

    Number of channels
    1
    Intrisic safety
    Self-vibration detection
    Auto-calibration
    Remote system check
    Keyboard lock
    Remote communication
    Bluetooth
    Communication Interfaces
    USB 2.0, Bluetooth® 4.0, electrical contacts
    LED indicator
    Display
    Keyboard
    3 push buttons
    Memory
    8 GB
    Battery type
    Li-Ion rechargeable cell
    Operating time
    operation time > 48 hours
    Operating temperature range
    from -10 o C to 50 o C
    Humidity range
    up to 90 % RH
    Weight
    121 grams
    Size
    88 x 49.5 x 19.2 mm
    IP rate
    IP 65
    Docking station required

    Sound measurements features

    Standards
    IEC 61252 Ed 1.2 (R2017); ANSI S1.25-1991 (R2020) Class 2 IEC 61672-1 (2013)
    Microphone type
    ST 104CIS MEMS microphone, 1/2” housing, patented
    Preamplifier type
    Integrated
    Linear operating range to IEC 61672
    53 dBA RMS ÷ 141 dBA Peak
    Total measurement range
    43 dBA RMS ÷ 141 dBA Peak
    Frequency range
    20 Hz ÷ 10 kHz
    Weighting filters
    A, C and Z
    Time constants
    Slow, Fast, Impulse
    Exchange rates
    2, 3, 4, 5, 6
    Criterion levels
    Selectable
    Profiles per channel
    3 with independent settings of filters (x) and time constants (y)
    Min logging step
    1s logger step
    Statistics
    LN (LEQ STATISTICS)
    Statistics in octaves or third octaves
    Audio recording
    option
    Voice coments
    1/1 octave
    option
    1/3 octave
    option

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