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| Brand | Hangzhou Aihua |
|---|---|
| Origin | Zhejiang, China |
| Model | AWA4000 |
| Instrument Type | Online Noise Monitoring System |
| Frequency Range | 20 Hz – 12.5 kHz |
| Measurement Range | 25 dB(A) – 140 dB(A) |
| Self-Noise | ≤20 dB(A) |
| Accuracy Class | Compliant with GB/T 3785.1–2023 / IEC 61672-1:2013 Class 1 |
| Measurement Duration | Manual or Automatic (0.1 s – 24 h) |
| Brand | Hangzhou Aihua |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AWA3000 |
| Instrument Type | Online Noise Monitoring System |
| Frequency Range | 20 Hz – 12.5 kHz |
| Measurement Range | 30 – 130 dB |
| Self-Noise Level | ≤20 dB(A) |
| Accuracy | ±0.5 dB |
| Measurement Duration | Configurable from 1 second to 24-hour continuous logging |
| Brand | Hangzhou Aihua |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AWA5688 |
| Instrument Type | Handheld Noise Measurement Instrument |
| Frequency Range | 20 Hz – 12.5 kHz |
| Measurement Range | 25 dB(A) – 130 dB(A) |
| Self-Noise | ≤20 dB(A) |
| Accuracy Class | Class 1 per GB/T 3785.1–2010 |
| Measurement Duration Options | Manual trigger or automatic intervals (10 s, 1 min, etc.) |
| Microphone System | 1/2″ pre-polarized condenser microphone (Φ12.7 mm) with AWA14602 preamplifier |
| Reference Sensitivity | −40 dB re 1 V/Pa |
| Linear Dynamic Range | 105 dB (A-weighted) |
| A/D Resolution | 24-bit |
| Sampling Rate | 32 kHz |
| Simultaneous Weightings | A/C/Z frequency + F/S/I time weightings |
| Detector | True RMS digital detection |
| Compliance Standards | GB/T 3785.1–2010 Class 1, IEC 61672–1:2013 Class 1, GB/T 3241–2010 Class 2, IEC 61260–1:2014 Class 2 |
| Display | 2.6″ color TFT LCD, 240 × 320 pixels, auto/manual backlight (46-level adjustment) |
| Brand | Hangzhou Aihua |
|---|---|
| Origin | Zhejiang, China |
| Model | AWA5636-1 |
| Instrument Type | Class 2 Sound Level Meter |
| Frequency Range | 20 Hz – 12.5 kHz |
| Measurement Range | 40 dB(A) – 130 dB(A) |
| Self-Noise | <33 dB(A) |
| Compliance | GB/T 3785.1–2010 / IEC 61672-1:2013 Class 2 |
| Display | 128×64 dot-matrix OLED |
| Power Supply | 4 × AAA alkaline batteries (≥12 h operation) |
| Operating Temperature | −10 °C to +50 °C |
| Output Interfaces | AC/DC/PWM output |
| Measurement Parameters | L<sub>p</sub>, L<sub>max</sub>, L<sub>eq,T</sub>, L<sub>min</sub>, SEL, E, T<sub>m</sub> |
| Brand | Hangzhou Aihua |
|---|---|
| Origin | Zhejiang, China |
| Model | AWA6292 |
| Frequency Range | 10 Hz–20 kHz |
| Measurement Range | 20 dB(A)–143 dB(A) |
| Self-Noise | ≤22 dB(A) |
| Accuracy Class | Class 1 (IEC 61672-1:2013) |
| Measurement Durations | 10 s, 1 min, 5 min, 24 h continuous |
| Display | 4.3″ capacitive touchscreen |
| Storage | 16 GB internal + microSD expansion up to 64 GB |
| Connectivity | 4G LTE, Wi-Fi 802.11 b/g/n, Bluetooth 5.0, USB-C, RS-232 serial |
| Protection Rating | IP65 (instrument body, excluding microphone) |
| Battery | 10,000 mAh Li-ion, 20 W fast charging (2 h → 24 h operation) |
| Operating Temperature | −20 °C to +60 °C |
| Dimensions | 288 × 95 × 40 mm |
| Weight | 500 g |
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