Personal noise dosimeter SV 104A
The SV 104A personal noise dosimeter is designed according to IEC 61252 and ANSI S1.25-1991 (R2020) standards to ensure precise measurements. It complies with occupational noise standards such as ISO 9612, OSHA 29 CFR 1910.95, and MSHA, offering flexibility with exchange rates (2, 3, 4, 5, 6 dB) and criterion levels. The dosimeter can log essential results like TWA (Time-Weighted Average), DOSE, LEX,8H, along with Leq, Peak, SPL, Max, Min, and more.
In addition, it features options for octave band analysis and audio recording for recognizing specific noise sources. Its built-in triaxial vibration sensor helps detect false events caused by shocks or movement, ensuring more accurate readings. The SV 104A’s Bluetooth connectivity allows for remote monitoring, enabling professionals to read out results without disturbing the worker, making it a powerful and convenient tool for managing workplace noise exposure.
Highlights
- MEMS microphone with lifetime warranty: Shock-resistant and stable over years of use
- Fully standards compliant: Meets ISO 9612, OSHA, MSHA, and ACGIH requirements
- Bluetooth® connectivity: Real-time monitoring and alarms via smartphone app
- Triggered audio recording (optional): Captures events for post-analysis and noise source recognition
- Real-time 1/1 & 1/3 octave analysis (optional): Supports selection of hearing protection and spectral assessment
- Time-history logging: Adjustable intervals with dual-step data capture for Leq, Max, Min, and Peak
- Three independent measurement profiles: Parallel recording with separate filter and time constant settings
- Built-in vibration sensor: Detects misuse and ensures data validity during wear
- High-contrast OLED display: Clear readings in daylight and low-light conditions
- Up to 48 hours of operation: Long battery life for multi-day measurement campaigns
SV 104A – Personal noise dosimeter
Applications
Communication Interfaces
USB 2.0, Bluetooth® 4.0, electrical contacts
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
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
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