Svantek SV 303 Urban Noise Monitoring Terminal (Class 1; 23–133 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 0.01 dB

Microphone: Patented MEMS-based microphone ST 30B in 1/2” housing

Preamplifier: Integrated

Linear Operating Range: 30 dBA RMS ÷ 133 dBA Peak (according to IEC 61672)

Dynamic Measurement Range: 23 dBA RMS ÷ 133 dBA Peak (typical from noise floor to maximum level)

Internal Noise Level: Less than 23 dBA RMS

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

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 100 dB at 1 kHz

Memory: 8 GB (non-removable)

Display and Keyboard: OLED colour display 96 × 96 px; 4 push-button keyboard

Communication Interfaces: USB; UART

Power Supply: Li-Ion rechargeable battery

Operation Time on Battery: Up to 8 h

External DC Source: USB-C; 5 V, 1 A (non-removable)

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

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

Dimensions: 600 mm length; 66 mm diameter excluding windscreen (windscreen diameter 130 mm)

Weight: Approx. 1.2 kg

Datasheet