SV 102A+ Class 1 Dual Channel Dosimeter

SV 102A+ Class 1 Dual Channel Dosimeter is presenting a new approach to occupational health and safety acoustic monitoring tasks. This dosimeter can be also used as a dual-channel Class 1 sound level meter and real-time 1/1 octave & 1/3 octave analyser.


For more information on SV 102A+ Class 1 Dual Channel Dosimeter or to request a quote, contact our team now:


Octave analysis, providing direct data for the design of the ear-protectors, together with Audio Events Recording (AER) function show the new reference standard on acoustic dose measurement field. The binaural dose measurement and octave analysis are simultaneously performed by this compact-size instrument. Three acoustic profiles per channel allow parallel measurements with independently defined filters and RMS detector time constants. Advanced time-history logging in each profile, together with spectra saving and Audio Events Recording provide a complete information about the measured signal. Data is stored in large 8 GB memory and can be easily downloaded to any PC using USB interface and Supervisor software.

The small and compact SV 15 preamplifier together with special mounting clip and dedicated headband enables an easy attachment of the microphone in extremely short distance to human ears. Calibration by measurement can be easily performed by direct usage of common acoustic calibrators.

SV 102A+ is also able to perform the measurement inside human ear – with the usage of SV 25S – smart microphone with an automatic calibration function (TEDS). The SV 102A+ together with SV 25S are designed for individual real-world test of the earmuffs noise reduction ratio by means of MIRE technique (Microphone-In-Real-Ear)-measurements under headphones or earmuffs. With a special adaptor, SV 25S can be also calibrated with available acoustic calibrators.

SV 102A+ Class 1 Dual Channel Dosimeter Specification

StandardsIEC 61252; ANSI S1.25-1991; Class 1: IEC 61672:2002, ISO 11904-1
Acoustic Dosimeter ModeLav/Leq, SPL, Lmax, Lmin, SEL, SEL8, PSEL, LEPd, Dose (%),
TWA, E, E_8h, Peak, Run Time, Upper Limit Time (ULT),
L(C-A), Projected Dose (D_8h)
SLM ModeLeq, Spl, SEL, LEP,d, Lden, Ltm3, Ltm5, statistics – Ln (L1- L99), LMax, LMin, LPeak
Simultaneous measurement in three profiles with independent set of filters and detectors
Weighting FiltersA, C and Z
RMS DetectorDigital true RMS detector with Peak detection, resolution 0.1 dB
Time constants: Slow, Fast, Impulse
MicrophoneSV 7052E, prepolarised, 1/2″ housing
SV 25S, special microphone with dedicated probe for
Microphone-In-Real-Ear technique (option)
PreamplifierSV 15 with integrated cable
Measurement Range45 dBA RMS ÷ 141 dBA Peak (with SV 7052E microphone)
Typical noise floorless than 35 dBA
Frequency Range20 Hz ÷ 20 kHz, sampling rate 48 kHz
Dynamic Range100 dB
Data Logger1Time-history logging of Leq/Lmax/Lmin/Peak/Lav results to internal memory with time step down to 100 millisecond to microSD card
Audio Recorder1Time-domain signal events recorder (option)
Dual-channel ModeDual-channel measurement mode with second microphone SV 7052E or SV 25S (option)
1/1 Octave1Dual-channel 1/1 octave real-time analysis and spectra logging,
10 filters with centre frequencies from 31.5 Hz to 16 kHz, Type 1: IEC 61260 (option)
1/3 Octave1Dual-channel 1/3 octave real-time analysis and spectra logging,
31 filters with centre frequencies from 20 Hz to 20 kHz, Type 1, IEC 61260 (option)

Basic Data

Input2 x LEMO 2-pin, Direct
DisplayColour 160 x 128 pixels OLED type
MemoryMicroSD card 8 GB (removable & upgradeable)
InterfacesUSB 1.1 Client
Extended I/O – AC output (1 V Peak) / Digital Output (Alarm trigger) / Digital Input (Input trigger)
Power SupplyTwo AA batteries (alkaline): operation time > 16 h (3.0 V / 1.6 Ah)2
Two rechargeable batteries (not included): operation time > 20h (2.4 V / 2.6 Ah)2
USB interface: 150 mA HUB
Environmental ConditionsTemperature: from -10 oC to 50 oC
Humidity: up to 90 % RH, non-condensed
Dimensions95 x 83 x 33 mm (without microphones)
Weight260 grams with batteries (without microphones)

1function parallel to the acoustic dosimeter mode or meter mode

2depends on instrument operation mode

*Continuous product development and innovation are the policy of our company. Therefore, we reserve the right to change the specifications without prior notice.



SV 102A+

Accurate measurement of noise exposure in workplaces dominated by high frequencies and in cold temperatures below zero