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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
