Class 1 Dual-Channel Noise Dosimeter

The Class 1 Dual-Channel Noise Dosimeter is designed to provide accurate noise exposure measurements in diverse working environments, especially those with asymmetric or directional noise. Its dual-channel functionality allows for simultaneous noise assessment on both sides of the head or in configurations such as underneath a headset and on a shoulder. This improves accuracy, particularly when noise sources are unbalanced. Additionally, the dosimeter supports a Class 1 frequency range, covering 20 Hz to 20 kHz, meeting the requirements of ISO 9612 for precise noise evaluation in high-frequency environments.

Equipped with audio recording and 1/1 octave analysis, this dosimeter enhances unattended noise measurements, enabling playback of recorded noise to distinguish between work-related and non-work-related sources. The MIRE measurement feature further expands its capabilities, offering specialized noise exposure assessment in environments like call centers and aviation.

Key Features:
Dual-Channel Measurement: Simultaneous noise exposure assessment from two different directions (e.g., both sides of the head or from a headset and shoulder) for enhanced data accuracy.
Class 1 Frequency Range: Measures the full frequency spectrum from 20 Hz to 20 kHz, essential for environments with high-frequency noise, such as those encountered in aerospace or industrial applications.
Audio Recording: Records noise for playback to verify and distinguish noise sources, as required by ISO 9612.
1/1 Octave Band Analysis: Helps select appropriate hearing protection based on the specific noise environment.
MIRE (Microphone in Real Ear) Measurement: Supports 1/3 octave band analysis to measure noise exposure in environments where traditional dosimetry is ineffective (e.g., call centers or aviation helmets).
High Sampling Rate: The SV 102A+ operates with a high sampling rate of 48 kHz, ensuring accurate capture of noise levels, especially in close-ear environments.
ISO 11904-1 Compliance: Meets international standards for recalculating noise doses based on actual ear canal noise levels.

Our Products Are…
  • Economically Priced
  • Futuristic Technology
  • Guaranteed Performance with Premium Quality
  • High Reliability
Hardware Features
  
Number of channels2
Auto-calibrationYes
Keyboard lockYes
Communication InterfacesUSB
LED indicatorYes
DisplayYes
Keyboard4 buttons
Memory32 GB
Battery typeTwo AA batteries (alkaline)
Operating time> 16 h
Operating temperature rangefrom -10’C to 50’C
Humidity rangeup to 90 % RH
Weight260g
Size95 x 83 x 33 mm
Sound measurements features 
  
StandardsIEC 61252; ANSI S1.25-1991; Class 1: IEC 61672-1:2013, ISO 11904-1
Microphone typeACO SV 7052E, prepolarised, 1/2” ; SV 25S, special microphone with probe for MIRE
Preamplifier typeSV 15
Linear operating range to IEC 6167245 dBA Leq÷ 141 dBA Peak
Frequency range20 Hz ÷ 20 kHz
Weighting filtersA, C and Z
Time constantsSlow, Fast, Impulse
Statistics in octaves or third octavesYes
Audio recordingoption
Voice comentsYes
1/1 octaveoption
1/3 octaveoption