Svantek SV 307A Noise Monitoring Station (Class 1; 23–128 dBA; 20 Hz–20 kHz)

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 with IEC 61672)

Dynamic Measurement Range: 23 dBA RMS ÷ 128 dBA Peak (typical from noise floor to 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 × LR (Rolling LEQ); 10 × LN (LEQ statistics); Lden; LEPd; Ltm3; Ltm5; GPS coordinates

Measurement Profiles: Simultaneous measurement in three profiles with independent sets of filters (x) and detectors (y)

Statistics: Ln (L1–L99); complete histogram in meter mode

Data Logger: Summary results (SR) and spectral data with interval down to 1 s; time history (TH) of selected parameters with interval down to 100 ms

1/1 Octave Analysis (option): Real-time Class 1 analysis per IEC 61260; centre frequencies from 31.5 Hz to 16 kHz

1/3 Octave Analysis (option): Real-time Class 1 analysis per IEC 61260; centre frequencies from 20 Hz to 20 kHz

Audio Recording (option): Time-domain recording to WAV format with selectable bandwidth and recording period

Remote System Check: Real-time system check; built-in sound source producing 100 dB at 1 kHz

GPS: Time synchronization and localization

Memory: MicroSD card 32 GB (removable; upgradeable up to 128 GB)

Display and Keyboard: OLED colour display 128 × 160 px; 10 push-button keyboard

Communication Interfaces: USB 2.0; 4G modem; RS 232 (for meteo module or dust monitor)

Ingress Protection Rating: IP 54

Power Supply: Li-Ion rechargeable battery (non-removable)

Operation Time on Battery (7.2 V / 10 Ah):

– Modem off: up to 6 days

– Modem on: up to 5 days (depending on modem usage)

Solar Panel (not included): MPPT voltage 17.0 V ÷ 20.0 V

AC Power Supply (included): Input 100 ÷ 240 VAC; Output +15 VDC 2.5 A; IP 67 housing

External DC Source (not included): Voltage range 10.5 V ÷ 24 V (e.g. 12 V or 24 V accumulator)

Environmental Conditions – Temperature: −20 °C to 60 °C

Environmental Conditions – Humidity: Up to 99 % RH, non-condensed

Dimensions: 680 mm length; 80 mm diameter excluding windscreen (windscreen diameter 130 mm)

Weight: Approx. 2.2 kg