
| รหัสสินค้า | SKU-21799 |
| หมวดหมู่ | เครื่องวัดระดับเสียง(Sound Level Meters)/BSWA |
| ราคาปกติ | |
| ลดเหลือ | 0.00 บาท |
| สถานะสินค้า | Pre-Order |
| ลงสินค้า | 30 พ.ค. 2567 |
| อัพเดทล่าสุด | 10 เม.ย. 2568 |
| คงเหลือ | 1 ชิ้น |
| จำนวน | ชิ้น |
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BSWA 309 is 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 signif cantly improves the accuracy and stability. Re-design analog front end circuit also lower the noise fl oor and linear range of product.

|
Type |
BSWA 309 |
|
Accuracy |
Class 2 / Type 2 |
|
Standard |
GB/T 3785.1-2010, IEC 60651:1979, IEC 60804:2000, IEC 61672-1:2013, ANSI S1.4-1983, ANSI S1.43-1997 |
|
Octave |
1/1 Octave, Centre Frequencies: 31.5Hz to 8kHz GB/T 3241-2010 Class 2, IEC 61260-1:2014 Class 2 ANSI S1.11-2004 Class 2 |
|
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 |
Fully 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 |
|
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 to cover whole dynamic range |
|
Resolution |
24Bits |
|
Sampling Rate |
48kHz |
|
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 approx.10 hours (depends on battery). 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±16)℃). 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 |













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