DEMO - Svantek SV 102A+ Class 1 Dual-Channel Noise Dosimeter

The Svantek SV 102A+ is a Class 1 dual-channel noise dosimeter for complex environments where exposure differs ear-to-ear or under headsets. Two independent channels let you measure under a headset and at a reference position (e.g., shoulder) at the same time, or left/right near-ear simultaneously, capturing asymmetric exposure without repeat shifts. It reports compliance metrics including Dose (%), TWA8h, and LEX,8h / LEP,d for OSHA/ISO-style programs. Ships ready to use with core accessories for immediate deployment.

For MIRE (Microphone-in-Real-Ear) assessments under headsets/helmets, the SV 102A+ supports ISO 11904-1 methods. MIRE requires the optional SV 25S in-ear microphone and enabled 1/3-octave bands to recalculate doses from in-ear levels. A high 48 kHz sampling rate preserves close-to-ear transients and high-frequency content. Investigations are accelerated by audio recording (for playback and source verification) and 1/1-octave analysis for hearing-protector selection. If you need a single-channel wireless model, the SV 104A adds Bluetooth® for app-based monitoring; for hazardous areas, SV 104IS kits are available.

Product Highlights

• Ready to use: supplied with essentials for immediate OHS measurements.
• Dual-channel dosimetry: measure under-headset and reference (or left/right) simultaneously to capture asymmetric exposure and avoid re-runs.
• MIRE option: ISO 11904-1 workflows supported; requires optional SV 25S in-ear mic and enabled 1/3-octave bands.
• Class 1 wideband: extended frequency range up to 20 kHz for accurate assessment where high-frequency noise matters.
• Program outputs: reports Dose (%), TWA8h, and LEX,8h/LEP,d for hearing-conservation compliance.
• Audio evidence: onboard recording to identify and verify noise sources post-measurement.
• Octave analytics: 1/1-octave for HPD selection; 1/3-octave for MIRE and detailed diagnostics.
• Ecosystem & variants: single-channel SV 104A (Bluetooth®) for wireless workflows; SV 104IS intrinsically safe kits for hazardous locations.

Main Features:

MIRE Measurement Technique

Microphone in Real Ear Measurements

The SV 102A+ employs the ISO 11904-1 MIRE (Microphone in Real Ear) measurement technique, utilizing a specialized microphone probe, the SV 25S, positioned at the entrance of the ear canal. This method is essential for conducting one-third octave band analysis directly within the ear, offering precise noise exposure assessments in environments where traditional dosimetry is ineffective, such as call centers with headphone-based audio. MIRE measurement is particularly suited for analyzing noise exposure from close-proximity sources, requiring the SV 25S MIRE microphone and 1/3 octave analysis capability.

Class 1 Accuracy

Integrating Noise Dosimeter and Class 1 Sound Level Meter

The SV 102A+ adheres to the Class 1 specifications of IEC 61672, ensuring high-precision measurements across a broad frequency range from 20 Hz to 20 kHz. This capability is crucial for accurate noise assessment in environments with high-frequency noise sources or in conditions of very low temperatures (down to -10°C). The device's 48 kHz sampling rate is in line with ISO 9612 recommendations for capturing the full spectrum of workplace noise, thereby providing reliable data for effective noise management and hearing protection.

Dual-Channel Input

Simultaneous Measurements with Two Microphones

Featuring two input channels, the SV 102A+ allows for the concurrent use of dual microphones. This dual-channel approach facilitates comprehensive noise exposure evaluation by enabling measurements on both sides of the head or a combination of one microphone placed on the shoulder and another inside the ear canal. Such configurations are invaluable for assessing the attenuation efficiency of hearing protectors or the acoustic performance of headsets, including those used in military aviation. This feature underscores the versatility of the SV 102A+ in adapting to various measurement scenarios, enhancing its utility in occupational noise assessment.

Main Application

Occupational Noise

Class 1 Noise Measurements in the Workplace

Occupational noise dosimetry, aligned with standards such as ISO, OSHA, and NIOSH, is key to protecting workers from harmful noise. The challenge of accurately measuring noise exposure comes from its variable and multi-directional nature in the workplace. The SV102A+ Dual Channel Dosimeter addresses this by allowing simultaneous noise measurements from different directions with a single device, making the process more efficient and less intrusive for workers. In environments like aviation or call centers, where noise sources are complex, traditional dosimetry methods may not be sufficient. The Microphone in Real Ear (MIRE) measurement technique is critical here. MIRE provides a direct assessment of noise exposure at the ear, leading to a more accurate understanding of auditory risks. Additionally, the SV102A+ facilitates unattended noise dosimetry with audio recording and frequency analysis features. These are important for analyzing noise sources after measurement, helping to identify specific noise contributions and develop effective mitigation strategies.

Svantek SV 102A+ Datasheet

Svantek SV 102A+ User Manual

Class 1 Dual-Channel Noise Dosimeter

Discover the Untapped Potential

Noise Dosimeter SV 102A+ | Operational Tutorial

Learn how to operate the SV 102A+ noise dosimeter with this step-by-step tutorial.