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This high quality yet low cost class 2 sound level meter comes as standard with 1/1 Octaves with an optional upgrade to 1/3 Octaves should you require.
It is fully compliant with IEC 61672-1:2013, ANSI S1.4-1983 and ANSI S1.43-1997. The linearity range is 25dBA~136dBA and it has a single range to cover 123dB/122dB dynamic range.
| Measurement Parameters | Leq, Peak, Lmax, Lspl, Lmin |
|---|---|
| Class | Class 2 |
| Noise Features | 1/3 Octaves, 1/1 Octaves, Data Logging |
| Brand | BSWA |
| Boxed Weight (kg) | 0.7 |
| Available Outside the UK? | Yes |
This is the BSWA309 Class 2 sound level meter which complies with IEC 61672-1:2013, ANSI S1.4-1983 and ANSI S1.43-1997. The linearity range is 25dBA~136dBA and it has a single range to cover 123dB/122dB dynamic range. They have a frequency weighting A/B/C/Z and a time weighting of fast/slow/impulse.
There is a 3 profile calculation in parallel with different frequency/time weighting and 14 custom define measurement. This meter comes standard with 1/1 Octaves, however, you have the option of 1/3 Octaves. It will calculate SPL, LEQ, Max, Min, Peak, SD, SEL and E and there is LN statistics and time-domain curve display. The BSWA309 has user define integral period measurement and integral period up to 24h.
There is high speed ARM with FPU (Float Point Unit) to achieve wide frequency response, large dynamic range and low noise floor as well as 4G MicroSD card (TF card) mass storage. There is a RS-232 remote control port and a mini thermal printer for measurement data print.
Please Note: The Peak C Range of this instrument is 45dB(A)~139dB(A)
| 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 |
