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AWA5661-1 Precision Pulse Sound Level Meter (SP00007046)
1. Overview: The AWA5661 sound level meter is a modular and multifunctional sound level meter that meets the requirements of GB/T3785-2010 and IEC6167
Product details
2Main technical performance
(1) Microphone: Φ 12.7mm (1/2 ') test condenser microphone, free field response, reference point is the center of the microphone diaphragm, and their nominal free field response in the reference direction is shown in Appendix A.
Users can also choose other models of microphones, which can be used to measure particularly low or high noise levels.
Performance table of compatible microphones
Microphone model |
Outer diameter (mm) |
Nominal sensitivity (mV/Pa) |
Frequency range (Hz) |
AWA14425 |
Φ12.7 |
30 |
10~16000 |
AWA14423 |
Φ12.7 |
40 |
10~20000 |
AWA14411 |
Φ23.77 |
80 |
10~16000 |
AWA14431 |
Φ6.35 |
4 |
10~20000 |
(2) Dynamic range
Model of microphone provided |
A-weighted local machine noise |
C-weighted local machine noise |
Z-weighted local machine noise |
Measurement upper limit |
AWA14425 |
<20dB(A) |
<25dB(C) |
<30dB |
140dB |
AWA14423 |
<18dB(A) |
<23dB(C) |
<28dB |
138dB |
AWA14411 |
<10dB(A) |
<15dB(C) |
<20dB |
132dB |
AWA14431 |
<40dB(A) |
<45dB(C) |
<50dB |
160dB |
(3) Frequency range: 10Hz~16kHz. When equipped with AWA14423 or AWA14431 microphones, the frequency range can reach 10Hz~20kHz
(4) Frequency weighting: A weighting, C weighting, Z weighting. Response in free field is shown in Appendix B
(5) Time weighting: F (fast), S (slow), I (pulse), Peak (peak)
(6) Detector characteristics: true effective value, digital detection, peak factor ≥ 10
(7) Instrument accuracy: Complies with IEC61672 Level 1 or GB/T3785 Level 1
(8) Range control: manual, with high and low settings, each with a 20dB attenuation, and a reference level linear range of>95dB.
(9) Total range: (for 1kHz frequency)
|
Microphone model |
range |
Measurement range (dB) |
Peak factor of 10 (dB) |
Peak measurement range (dB) |
AWA14425 |
high |
45~140 |
45~123 |
70~143 |
low |
27~120 |
27~103 |
50~123 |
|
AWA14423 |
high |
43~138 |
43~121 |
70~141 |
low |
25~80 |
25~101 |
50~121 |
|
AWA14411 |
high |
35~132 |
35~115 |
60~135 |
low |
15~112 |
15~95 |
40~115 |
|
AWA14431 |
high |
65~160 |
65~143 |
90~163 |
low |
45~140 |
45~123 |
70~143 |
The above range is the value at the factory. When the user adjusts the calibration value or replaces the microphone, the range may change. The specific range is determined by the overload indication and lower limit indication when the range is high; When the measurement range is low, the upper limit is determined by the overload indication, and the lower limit is determined by adding 8dB to the background noise.
(10) Display: 128 × 64 dot matrix OLED.
(11) Output interface: AC output, DC output, RS-232C。
(12) Calibration: Use a Level 1 sound level calibrator or piston sounder.
(13) Power supply: Internally equipped with 4 × LR6 (5 #) alkaline batteries, capable of continuous operation for 16 hours. External power supply 4.5V~9V, 0.2A.
(14) Dimensions: 220 mm × 72 mm × 32 mm
(15) Quality: 400g.
(16) Usage conditions: Temperature: -15 ℃~50 ℃
Relative humidity: 10%~90%
Air pressure: 65kPa~108kPa
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