Personal Noise Dosimeter SV 104A Product Page

Noise Dosimeters > SV 104A

Personal noise dosimeter SV 104A

5.0 (20 Reviews)

The SV 104A is a fully standards-compliant personal noise dosimeter designed for accurate and uninterrupted occupational noise assessments. It enhances efficiency with three independent measurement profiles and detailed time-history logging (TWA, DOSE, LEX,8h, Leq/Peak/Max/Min). Bluetooth® connectivity.its major upgrade from the previous SV 104 model enables remote monitoring without interrupting the worker’s activity. Built to meet IEC 61252 and ANSI S1.25-1991 (R2020) standards, and compliant with ISO 9612, OSHA 29 CFR 1910.95, and MSHA regulations, the SV 104A supports flexible exchange rates (2/3/4/5/6 dB) and customizable criterion levels. It includes... an integrated triaxial vibration sensor to detect shocks and motion artefacts, ensuring reliable data integrity. Optional firmware features such as 1/1-octave, 1/3-octave band analysis, and triggered audio recording further enhance its ability to identify noise sources and assist in selecting appropriate hearing protection.

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The SV 104A is the first noise dosimeter on the market with a life-time warranty for the MEMS microphone that is resistant to accidental shocks, knocks or even fall-downs. The SV 104A Bluetooth® interface enables current results to be previewed on a smart-phone or tablet using our Assistant application. The smart-phone application also signals an alarm when the set noise limits are exceeded. All vibrations that affect noise measurement results are detected by an inbuilt tri-axial vibration accelerometer and are marked in the results time history, so they can be easily excluded from dose calculation.

Additionally, the accelerometer detects if dosimeter is not used by the worker and marks this information in time history. We have designed the SV 104A to make noise dosimetry measurements easier, once the SV 104A detects a calibration signal, it calibrates automatically saving the calibration data together with the measurement file, before and after measurement. Options for 1/1 & 1/3 octave and Audio Event Recording allow selection of hearing protectors and noise sources recognition.

Sound measurements features
Standards	IEC 61252 Ed.1.2 (2017); 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	1 s logger step
Statistics	LN (LEQ STATISTICS)
Statistics in octaves or third octaves	✔️
Audio recording	option
Voice comments	✔️
1/1 octave	option
1/3 octave	option

Other Features & Highlights

Compliance-ready: Fully supports OSHA 29 CFR 1910.95, MSHA, ACGIH, and ISO 9612 measurement profiles for regulatory validation.
Certified standards: Meets IEC 61252:2017 and ANSI/ASA S1.25-1991 (R2020); with listed accessories, complies with IEC 61672-1:2013 Class 2.
Parallel profiles: Operate up to three independent profiles simultaneously, each with different exchange rates and time constants—eliminating the need for repeat surveys.
Detailed A-weighted logging: Records dual-step time-history of Leq, Max, Min, and Peak values for complete traceability and documentation.
Patented MEMS microphone: Lifetime warranty, shock-resistant design, ensuring long-term stability and quick field calibration.
Vibration detection: Built-in triaxial sensor automatically flags shocks or mishandling events, maintaining data accuracy.
Readable OLED display: High-contrast screen ensures clear visibility in both bright and low-light conditions.
Extended operation: Delivers over 40 hours of battery life (profile-dependent), ideal for full-shift and multi-day measurements.
Integrated ecosystem: Supplied with PC software and mobile app, with free firmware upgrades for enhanced usability.
Optional analytics: Expand capabilities with 1/1- and 1/3-octave analysis or audio recording—perpetual license, no expiry.
Comprehensive warranty: Includes 36-month instrument coverage plus extended microphone protection.
Specialized variants: Available as SV 104IS (intrinsically safe) for hazardous zones and SV 104A (Bluetooth-enabled) for real-time monitoring.
Fleet bundle option: 5-Pack Team Kit includes 5 dosimeters, a Class 1 calibrator, multi-bay USB charging hub, and carrying case for seamless team deployment.

Downloads

Data Sheet
PDF, SV 104A

User Manual
PDF, v3.00

Publications
Conference Paper

Applications

Occupational Noise

Personal noise monitoring compliant with IEC 61252 and ANSI S1.25-1991 standards

The SV 104A is used for full-shift personal noise exposure assessments, ideal for environments where noise varies throughout the day such as manufacturing, construction, mining, logistics, and utilities. It supports task-based studies, baseline surveys, and post-change evaluations, ensuring existing hearing protection remains effective. Measurement results meet ISO 9612 and OSHA 1910.95 compliance requirements, providing reliable data for OSHA/NIOSH reporting, and supporting the proper selection of hearing protectors and administrative noise control measures.

Inteccon - Features

Key Features

The SV 104A is designed for accurate, reliable noise dosimetry in demanding environments. Its advanced sensing, calibration, and connectivity features ensure precision, compliance, and ease of use.

MEMS Microphone

Patented MEMS microphone with high shock resistance, low power use, high stability, long-term accuracy, and a lifetime warranty.

Frequency Analysis & Audio Recording

The SV 104A identifies noise sources using frequency analysis, audio and vibration data, removing artefacts for accurate exposure assessment.

Bluetooth App

Bluetooth® connectivity links the SV 104A to the ASSISTANT PRO app for remote control and real-time noise limit alerts.

Auto-Calibration

Auto-calibration detects calibration tones automatically and logs data before and after measurements for accuracy and compliance.

Inbuilt Vibration Sensor

The triaxial vibration sensor detects shocks and handling errors, flags invalid data, and improves measurement reliability.

Wide Dynamic Range & Standards Compliance

The SV 104A measures accurately across a wide dynamic range and complies with international noise dosimetry standards.

FAQ Component

Frequently asked questions

What is a noise dosimeter?

A noise dosimeter is a small device worn near the ear that measures how much noise a person is exposed to during a work shift.

Why should I use a noise dosimeter?

It automatically records noise exposure over time, saving you from manual calculations and tracking in noisy or hard-to-access areas.

Who needs a noise dosimeter?

Workers in loud environments such as factories, construction sites, and mines use dosimeters to prevent hearing loss and ensure safety compliance.

How is a noise dosimeter different from a sound level meter?

A dosimeter is worn on the body for personal noise exposure, while a sound level meter is hand-held and measures noise in a specific area.

How do I know if the dosimeter is working properly?

Check that the screen or indicator light is on and the microphone is securely connected before starting measurement.

Can I connect the dosimeter to my phone or computer?

Yes, some models like the SV 104A offer Bluetooth® connectivity and a mobile app for real-time data viewing and alerts.

How should I clean the dosimeter?

Use a soft, damp cloth, avoid solvents or chemicals that could damage the microphone or housing.

Can I replace the battery myself?

No, lithium-ion batteries should only be replaced by authorized service centers for safety reasons.

Is there a version for explosive environments?

Yes, the SV 104IS is an intrinsically safe model approved for use in hazardous zones like refineries or mines.

Can I charge the dosimeter anywhere?

Always charge it on a non-flammable surface and never in hazardous or explosive locations.

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Serving customers in Florida, Maryland, Delaware, New Jersey, New York, Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire & Maine. Local technical support for SVANTEK instruments.