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SV 104BIS Intrinsically Safe Noise Dosimeter

The intrinsically safe dosimeter is a noise dosimeter designed by the ATEX directive and the IECEx performance specifications. The intrinsically safe dosimeter is typically used in occupational noise measurements in areas such as mines and petrochemical plants where it is necessary to secure intrinsic safety.

104 BIS Intrinsically Safe Noise Dosimeter Front

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The dosimeter is covered by a 3-year warranty and a life-time warranty for the patented MEMS microphone. The intrinsically safe dosimeter uses a new type of docking station for fast data transfer and quick battery recharging.

The SV 104BIS is the newest version (2022) of an intrinsically safe noise dosimeter. Like its predecessor, the SV 104BIS is a cable-free dosimeter and is typically attached to the user’s shoulder, close to the ear using the mounting clips supplied.

Among the unique features of the new model, the software is automatic noise dose calculation, sound pressure level logging, audio recording, octave band frequency analysis, and auto-calibration. The new ATEX dosimeter has an 8GB memory and fast data transfer via new docking stations. The new Bluetooth® interface enables previewing current results on a mobile app.

SV 104BIS Specification

Number of channels	1
Intrisic safety
Self-vibration detection
Auto-calibration
Remote system check
Keyboard lock
Remote communication
Bluetooth
Communication Interfaces	Bluetooth, Electrical contacts (docking station required)
LED indicator
Display
Keyboard	3 push buttons
Memory	8 GB
Battery type	Li-Ion rechargeable cell
Operating time	45 hours
Operating temperature range	-10 °C ÷ +50 °C
Humidity range	up to 90 % RH
Weight	117 g
Size	88 x 49.5 x 19.2 mm
IP rate	IP 65
Docking station required

Sound measurements features

Standards	EC 61252 ed1.1 (2002); ANSI S1.25-1991 (R2007); Class 2 IEC 61672-1 ed2.0 (2013)
Type approvals	Yes
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	3 with independent settings of filters (x) and time constants (y)
Min logging step	1s
Statistics in octaves or third octaves
Audio recording	option
Voice coments
1/1 octave	option
1/3 octave	option