Intrinsically safe noise dosimeter SV 104BIS
SV 104 BIS is a Class 2 personal noise dosimeter certified for use in explosive atmospheres. It combines a robust MEMS microphone with intrinsic safety in accordance with ATEX and IECEx, making it ideal for monitoring worker noise exposure in hazardous industrial environments. The dosimeter measures noise levels from 53 dBA Leq to 143 dBA Peak, logs data with high resolution, and records 1/1 or 1/3 octave bands and audio events for detailed post-analysis.
Bluetooth® connectivity enables real-time data preview on mobile devices using the Assistant app, while the built-in triaxial vibration sensor ensures traceable and accurate results, even during movement or misuse. With a life-time warranty on the microphone and up to 45 hours of operation on a single charge, the SV 104 BIS offers long-term reliability and performance for noise exposure assessments aligned with ISO 9612, OSHA, MSHA, and ACGIH standards.
Highlights
- Certified for explosive environments, compliant with ATEX and IECEx for use in hazardous zones.
- Patented MEMS microphone with life-time warranty and integrated auto-calibration (TEDS).
- Real-time Bluetooth® preview, allowing remote data access and alarms via smartphone app.
- Simultaneous octave and audio recording (options), enabling noise source identification and hearing protector selection.
- Built-in vibration sensor, detecting misuse and ensuring result integrity.
- 45-hour runtime, supported by fast USB charging and docking station options.
SV 104BIS – Intrinsically safe noise dosimeter
Applications
Communication Interfaces
Bluetooth, Electrical contacts (docking station required)
Battery type
Li-Ion rechargeable cell
Operating temperature range
-10 °C ÷ +50 °C
Humidity range
up to 90 % RH
Standards
IEC 61252 Ed 1.2 (R2017); ANSI S1.25-1991 (R2020); Class 2 IEC 61672-1 Ed 2.0 (R2013)
Microphone type
ST 104B MEMS
Preamplifier type
Integrated
Linear operating range to IEC 61672
53 dBA RMS ÷ 143 dBA Peak
Total measurement range
46 dBA RMS ÷ 143 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
4 with independent settings of filters (x) and time constants (y)
Statistics in octaves or third octaves
