Area Sound Level Meters
SWAN 308/309 are octave sound level meters updating the dual-core (DSP+ARM) architecture to single chip ARM with float point unit, and updating all fix-point calculation to float-point, which significantly improves the accuracy and stability. Re-design analog front end circuit also lower the noise floor and linear range of product. SWAN 308 is Class 1 and SWAN 309 is Class 2.
- Class 1 (SWAN 308) and Class 2 (SWAN 309) sound level meter
- Comply with IEC 61672-1:2013, ANSI S1.4-1983 and ANSI S1.43-1997
- 1/1 Octave in accordance with IEC 61260-1:2014 and ANSI S1.11-2004
- Linearity range: 20dBA~139dBA (SWAN 308), 20dBA~139dBA (SWAN 309)
- Single range to cover 123dB/122dB dynamic range
- Frequency weighting: A/B/C/Z. Time weighting: Fast/Slow/Impulse
- 3 profile calculation in parallel with different frequency/time weighting. 14 custom define measurement
- Calculate SPL, LEQ, Max, Min, Peak, SD, SEL, E
- LN statistics and time history curve display
- User define integral period measurement, integral period up to 24h
- High speed ARM core with FPU (Float Point Unit) to achieve wide frequency response, large dynamic range and low noise floor
- 4G MicroSD card (TF card) mass storage
- RS-232 remote control port
- Mini thermal printer for measurement data print
- Internal GPS module (option), support GPS timing.
- Basic noise measurement
- Environmental noise assessment
- Product quality check
- Evaluation of noise reduction engineering