New BSWA 309
Introduction:New BSWA 308/309is new generation octave sound level meter upgrade from base BSWA 308/309. The new types update the dual-core (DSP+ARM) architecture to single chip ARM with FPU, and update 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.
BSWA 308 is Class 1 and BSWA 309 is Class 2. Both instruments have certificated by the China CPA (Certification of Pattern Approval) and CMC?(China Metrology Certification)
Single chip high speed ARM with FPU
USB port function implemented
White backlight LCD
Update firmware via USB (also power supply)
Integral period from 1s~24h
Timer feature support auto measurement
0.1s, 0.2s, 0.5s logger step added
Internal GPS (option) with GPS timing
5 templates to save user setting
Single range to cover 123dB dynamic range
B-weighting added to meet ANSI standard
Reduce the noise floor (only for Class 1)
Automatic power on with external supply, ease of integration
Upper limit of measurement: 136dBrms/139dBpeak (40mV/Pa)
Product Features：
Class 1 (New BSWA 308) and Class 2 (New BSWA 309) sound level meter
Comply with IEC 61672-1:2013, ANSI S1.4-1983 and ANSI S1.43-1997
Real-time 1/1 and 1/3 Octave in accordance with IEC61260-1:2014 and ANSI S1.11-2004
Linearity range: 22dBA~136dBA (BSWA 308), 25dBA~136dBA (BSWA 309)
Single range to cover 123dB/122dB dynamic range
Frequency weighting: A/B/C/Z. Time weighting: Fast/Slow/Impulse
3 profile calculation in parallelwith 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
Product Features：Basic noise measurement
Environmental noise assessment
Product quality check
Evaluation of noise reduction engineering
| Specification | |
|---|---|
| Type | NEW BSWA 309 |
| Accuracy | Class 2 / Type 2 |
| Standard | GB/T3785.1-2010, GB/T3785.2-2010, IEC60651:1979, IEC60804:2000, IEC61672-1:2013, ANSI S1.4-1983, ANSI S1.43-1997 |
| Octave | Real-time 1/1 Octave: 20Hz~8kHz Optional Real-time 1/3 Octave: 20Hz~12.5kHz GB/T 3241-2010, IEC 61260-1:2014 ANSI S1.11-2004. Base 10 system |
| Supplied Microphone | MPA309T: 1/2” prepolarized measurement microphone, Class 2. Sensitivity: 40mV/Pa. Frequency Range: 20Hz~12.5kHz. |
| Mic Interface | TNC connecter with ICCP power supply (4mA/24V) |
| Detector / Filter | All float-point digital signal processing (digital detector and filter） |
| Integral Period | 1s-24h user define integral period. Repeat time: infinite, 1~9999 |
| Measurement Functions | LXY(SPL), LXeq, LXYSD, LXSEL, LXE, LXYmax, LXYmin, LXPeak, LXN. Where X is the frequency weighting: A, B, C, Z; Y is time weighting: F, S, I; N is the statistical percentage: 1~99 |
| 24h Measurement | Automatic measurement and log the history data |
| Frequency Weighting | Parallel A, B, C, Z (It can also be applied to 1/1 and 1/3 Octave) |
| Time Weighting | Parallel F, S, I and Peak detection |
| Self-noise | Sound: 20dB(A), 26dB(C), 31dB(Z) Electrical: 14dB(A), 19dB(C), 24dB(Z) |
| Upper Limit | 136dB(A) Increase to 154dB(A) with 5mV/Pa Microphone |
| Frequency Response | 20Hz~12.5kHz |
| Linearity Range | 25dB(A)~136dB(A) |
| Dynamic Range | 122dB (14dB(A)~136dB(A)) |
| Peak C Range | 47dB(A)~139dB(A) |
| Range Setting | Single range |
| Resolution | 24Bits |
| Sampling Rate | 48kHz(Sampling interval for LN: 20ms) |
| Noise Curve | Time domain noise curve display. Duration time: 1min, 2min, 10min |
| LCD Display | 160x160 LCD with white backlight, 14 step contrast level |
| Mass Storage | 4G MicroSD card (TF card) |
| Post-processing | Post-processing software VA-SLM can read, analyze and generate reports of store data |
| Export Data | Directly connect to the computer to read the memory card (USB disk) |
| Output | AC (max 5VRMS output), DC (10mV/dB), RS-232 serial interface and USB virtual serial port |
| Alarm | User define alarm threshold. LED indicate the alarm status |
| Power Supply | 4x1.5V alkaline batteries (LR6/AA/AM3), sustainable use of more than 10 hours. It also can be supply by external DC power(7V-14V 500mA) and USB power(5V 1A) |
| RTC | Built-in backup battery has been calibrated at factory to the error <30s in 30days (<10ppm, 25?C). It can keep RTC running when replacing the main batteries. GPS timing function available (option with GPS module) |
| Firmware Update | Update firmware via USB port |
| Conditions | Temperature: -10℃~ 50℃. Humidity: 20% ~ 90%RH |
| RT Temperature | Real-time temperature display on the main screen |
| Size (mm) | W70 x H300 x D36 |
| Weight | Approx. 620g, including 4 alkaline batteries |
| GPS（option） | Receiver Type: 50 Channels; Time-To-First-Fix: Cold Start 27s, Warm Start 27s, Hot Start 1s; Sensitivity: Tracking -161dBm, Reacquisition -160dBm, Cold Start -147dBm, Hot Start -156dBm; Horizontal position accuracy: 2.5m, Timing accuracy: 30ns, Velocity accuracy: 0.1m/s; Update Rate: 1Hz, Operation Limits: Dynamic≤4g, Altitude<50000m, Velocity<500m/s |
| Calibrator(option) | CA111, Class 1, 94dB/114dB, 1kHz |
| Printer(option) | Mini-needle or thermal printer, optional, RS-232 port |
Download：
Firmware_P0274.SLM.3.3.201214.F5
Download information:
