SV 102+ Dual Channel Noise Dosimeter

SV 102+ Dual Channel Noise Dosimeter replaces the ground breaking SV 102. It has been designed for the accurate measurement of noise exposure to ISO 9612 and MIRE (microphone in real ear) measurements to ISO 11904-1. MIRE methodology requires 1/3 octave analysis, a feature uniquely available in the SV 102+.


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


MIRE measurement involves measuring the sound in the ear and performing a one-third octave band analysis on it. Using the SV 102+ in conjunction with a special microphone probe like the SV 25S, placed at the entrance of the ear canal, makes this all possible. A typical application of MIRE measurement is noise exposure monitoring in telephone call centres where the sound comes from the headphones; an application not suited to classical dosimetry methods.

This unique instrument uses a class beating high resolution, full colour OLED screen making it even easier to read; even in full daylight. The small memory capability of its predecessor; the SV 102, has been upgraded by adding a microSD card for an incredible amount of storage capability. Additionally, an LED that indicates the status of the measurement and changes colour when the noise dose exceeds the limit set.

Calibration of the both the SV 102+ Dual Channel Dosimeter and the MIRE microphone is done using a SV 34 calibrator. The calibration factor is stored inside the instrument and in the TEDS memory of the SV 102+ microphones. This cross checking solution helps to prevent incorrect calibration factors being used.

The SV 102+ is a low power instrument and is powered using only two small AAA batteries. It is fully supported by our Supervisor software which is dedicated to Health and Safety applications.

SV 102+ Dual Channel Noise Dosimeter Specification

StandardsIEC 61252; ANSI S1.25-1991; Class 2: 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 25D, Class 2, ceramic microphone, 1/2″ housing with built-in
preamplifier & integrated cable
SV 25S, special microphone with dedicated probe for
Microphone-In-Real-Ear technique (option)
SV 25D and SV 25S have built-in TEDS functionality for the automatic calibration
Measurement Range45 dBA RMS ÷ 141 dBA Peak (with SV 25D microphone)
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 25D or SV 25S
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.


Health & Safety

From the Noise at Work Act to the Physical Agents Directive (Vibration) we have instrumentation to ensure you stay within the law.