SV 102
Dual-Channel Acoustic Dosimeter
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OVERVIEW
The SV 102
dual-channel instrument presents completely new approach to occupational
health and safety acoustic monitoring task. The binaural dose measurements
and the 1/1 octave analysis are simultaneously performed. Octave
analysis provides direct data for the design of the ear-protectors.
Together with Audio Events Recording (AER) option, these functionalities
show the new reference standard on acoustic dose measurement field, now
commonly available in compact size instrument.
Dosimeter is offered with one or two dedicated SV 25D ceramic microphones
assembled in 1/2” housing. It ensures the very easy calibration by
direct usage of commonly available acoustic calibrators. Moreover, SV
25D smart sensor, with built-in TEDS (Transducer Electronic Data Sheet),
offers automatic calibration function.
The very robust casing of the SV 25D, together with the special mounting
clip and dedicated headband, make that microphones can be very easily
attached in extremely short distance from the human ears.
SV 25S smart sensor with TEDS, is dedicated for the measurements under
headphones or earmuffs (Hearing Protection Device - HPD) using MIRE
technique (Microphone-In-Real-Ear). With special adapter, it can be also
calibrated with available acoustic calibrators.
The SV 102 together with SV 25S are designed for individual real-world test
of the earmuffs noise reduction ratio. The SV 102 can be also used as a
dual-channel type 2 sound level meter and real-time 1/1 octave analyser.
Three acoustic profiles per channel allow parallel measurements with
independently defined filters and RMS detector time constants. Advanced
time-history logging for each profile, together with spectra saving and
audio-events recording provide complete information about measured signal,
which is saved in non-volatile internal memory up to 64 MB. Data files are
easily downloaded to any PC using USB interface and SvanPC+ software.
Instrument is powered from two AA standard or rechargeable batteries
(separate charger is required) as well as the USB interface.
FEATURES
Sound Level Meter & Analyser
- Dual-channel Acoustic Dosimeter conforming to IEC 61252 and ANSI S1.25-1991
- Dual-channel Sound Level Meter conforming to Type 2: IEC 61672
- Dual-channel 1/1 octave analysis
- Single measurement range: Measurement range 45 dBA RMS ÷ 141 dBA Peak
- MIRE measurement technique with SV 25S
- Individual evaluation of the HPDs attenuation in real-world
- Three parallel independent profiles
- Advanced data logger, up to 12 results per channel logged simultaneously including spectral analysis
- Audio Events Recording
- Automatic calibration thanks to the TEDS technology
- Built-in non-volatile memory up to 64 MB
- USB 1.1 interface
- Large LCD with backlight
- Integration time programmable up to 24 h
- Power supply by two AA rechargeable or standard batteries (operational time > 24 h)
- Easy operation
- Extremely compact, light weight (260 grams with batteries) and robust case (volume comparable to PDA devices)
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TECHNICAL SPECIFICATIONS
| Dosimeter / SLM / Analyser | |
| Standards | IEC 61252; ANSI S1.25-1991; Type 2: IEC 61672:2002 |
| Acoustic Dosimeter Mode | Leq, Spl,
Peak, SEL, DOSE, D_8h, LAV, SEL8, PSEL, E, E_8h, “Peaks Counter” and
more Measurement simultaneous to the 1/1 octave analysis |
| SLM Mode | Leq, Spl,
SEL, LEPd, Lden, Ltm3, Ltm5, statistics - Ln (L1- L99), LMax, LMin,
LPeak Simultaneous measurement in three profiles with independent set of filters and detectors |
| Weighting Filters | A, C and Z |
| RMS Detector | Digital
True RMS detector with Peak detection, resolution 0.1 dB Time constants: Slow, Fast, Impulse |
| Microphones | SV 25D,
Type 2, ceramic microphone, 1/2" hausing with built-in preamplifier &
integrated cable SV 25S, Type 2, ceramic microphone, special version of the SV 25D for measurements based on Microphone-In-Real-Ear technique (option) SV 25D and SV 25S have built-in TEDS functionality for the automatic calibration |
| Measurement range | 45 dBA RMS ÷ 141 dBA Peak |
| Frequency range | 20 Hz ÷ 8 kHz, sampling rate 24 kHz |
| Dynamic range | 100 dB |
| Data Logger* | Time-history logging of RMS/Max/Min/Peak results to internal memory with time step down to 1 second, up to 24 measurement results logged simultaneously |
| Audio Recorder* | Time-domain signal events recorder (option) |
| Dual Channel Mode | Dual-channel measurement mode with second microphone SV 25D or SV 25S (option) |
| 1/1 Octave* |
Dual-channel 1/1 octave real-time analysis and spectra logging, 9 filters with centre frequencies from 31.5 Hz to 8 kHz, Type 1: IEC 61260 (option) |
| Basic Data | |
| Input | 2 x LEMO 2-pins |
| Display | LCD 128x64 pixels plus icons with backlight |
| Memory | up to 64MB non-volatile flash type |
| Interfaces | USB 1.1
Client Extended I/O - AC output (1V Peak) / Digital Output (Alarm Trigger) / Digital Input (Input Trigger) |
| Power supply |
Two AA batteries (alkaline) operation
time > 20 h (3.0 V / 1.6 Ah)** Two rechargeable batteries (not included) operation time > 24 h (2.4 V / 2.6 Ah)** USB interface 150 mA HUB |
| External power supply 8-15 VDC | |
| USB interface: 5V@150mA | |
| Environmental conditions | Temperature from -10 ˚C to 50 ˚C |
| Humidity up to 90% RH, non condensed | |
| Dimensions | 95 x 83 x 33 mm (without microphones) |
| Weight | 260 grams with batteries (without microphones) |
* function parallel to the acoustic dosimeter mode or
meter mode
** in single-channel dosimeter mode and backlight off
PICTURE
SV 102 Dual-Channel Acoustic Dosimeter
