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SV 307A Outdoor Noise Monitoring Station

The SV307A is the newest version of the all-in-one noise monitoring station based on a patented MEMS microphones technology covered by a life-time warranty.

SV 307A Outdoor Noise Monitoring Station

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Compatible with SvanNET

The SV 307A Outdoor Noise Monitoring Station can be used with SvanNET for remote communication and automatic monitoring services.

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The SV 307A Class 1 noise monitoring station has been designed for permanent noise monitoring in all weather conditions. It uses smart solutions to control the internal temperature and to detect any hardware failures.

The new housing is made from strengthened materials that protects the internal electronics: Class 1 sound level meter with 4G and GPS modems. The SV 307A measures noise levels, statistics and spectra together with audio files that can be triggered on level or time. The advanced triggering provides the possibility of the noise prediction to alarm the user before certain noise levels are reached. Also, with the SvanNET Service it is possible to connect to SV 307A to listen to the live noise from the microphone!

SV 307A Approved by PTB as Class 1 Sound Level Meter

In March 2022, the Physikalisch-Technische Bundesanstalt (PTB) granted the world’s first type approval to a noise monitoring station with a MEMS microphone. The SV 307A recieved the certificate of conformance to the Class 1 Sound Level Meter specified by IEC 61672. It is an important turning point in the history of MEMS microphones in environmental noise monitoring.

Noise, Meteo, Dust

The SV 307A can be integrated directly with a dedicated weather monitoring module or dust monitor. Sound level meter measurement data is combined with all meteorological values such as wind speed, wind direction, rain, humidity, or dust particles (PM 2.5 or PM10) when external sensors are connected. Moreover, the advanced triggering system can use noise, weather, or dust parameters for alarm triggering.

Remote Monitoring Service

The SV 307A includes the basic licence for the SvanNET remote communication service which can be upgraded to the automatic monitoring services. The automatic service offers fully automated management of multi-point noise and building vibration measurement (peak particle velocity). Tools such as automatic files download, data storage, advanced alarms, data sharing and reporting enable unattended noise and building vibration measurement. The functionality of SvanNET allows for group monitoring stations in projects so that alarms and reports are defined for each project separately. The data files are also grouped automatically by project assignments.

SV 307A Noise Monitoring Terminal Specification

Standards	Class 1: IEC 61672-1:2013, Class 1: IEC 61260-1:2014
Weighting Filters	A, B, C, Z, LF
Time Constants	Slow, Fast, Impulse
RMS Detector	Digital True RMS detector with Peak detection, resolution 0.1 dB
Microphone	Patented MEMS based design microphone ST 30A in 1/2” housing
Preamplifier	Integrated
Linear Operating Range	30 dBA RMS ÷ 128 dBA Peak (in accordance to IEC 61672)
Total Dynamic Measurement Range	23 dBA RMS ÷ 128 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level	less than 23 dBA RMS
Dynamic Range	>100 dB
Frequency Range	20 Hz ÷ 20 kHz
Meter Mode Results	Elapsed time, Lxy, Lxeq (LEQ), Lxpeak (PEAK), Lxymax (MAX), Lxymin (MIN), LxyE (SEL), 2 x LR (ROLLING LEQ),10 x LN (LEQ STATISTICS), Lden, LEPd, Ltm3, Ltm5, GPS coordinates
Measurement Profiles	Simultaneous measurement in three profiles with independent set of filters (x) and detectors (y)
Statistics	Ln (L1-L99), complete histogram in meter mode and 1/1 & 1/3 octave analysis
Data Logger	Logging of summary results (SR) and spectra data with interval step down to 1 s and time history (TH) of selected parameters with shorter interval step down to 100 ms
1/1 Octave Analysis (option)	Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 31.5 Hz to 16 kHz
1/3 Octave Analysis (option)	Real-time analysis meeting Class 1 requirements of IEC 61260, centre frequencies from 20 Hz to 20 kHz
Audio Recording (option)	Time domain records to wav file format on demand with selectable bandwidth and recording period
Ingress Protection Rating	IP 64
GPS	Time synchronization and localization
Remote system check	Inbuilt reference sound source producing level of 100 dB at 1 kHz
Memory	MicroSD card 32 GB (removable & upgradeable up to 128 GB)
Display & Keyboard	OLED colour display 128 x 160 px and 10 push-button keyboard
Communication Interfaces	USB 2.0 4G modem RS 232 for meteo module or dust monitor
Power supply	Li-Ion rechargeable battery (non-removable) Operation time on battery (7.2 V / 10 Ah): Modem off Modem on Solar Panel (not included) AC power supply (included) External DC source (not included)up to 6 days up to 5 days (depends on modem usage) MPPT voltage 17.0 V ÷ 20.0 V Input 100 ÷ 240 VAC output +15 VDC 2.5 A, IP 67 housing voltage range 10.5 V ÷ 24 V e.g. 12 V or 24 V accumulator
Environmental Conditions	Temperature Humidity from -20 °C to 50 °C up to 95 % RH, non-condensed
Dimensions	680 mm length; 80 mm diameter excluding windscreen (windscreen diameter 130 mm)
Weight	Approx. 2.0 kg

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

SV 307A Datasheet

SV 307A User Manual

SV 307A PTB Type Approval