Thiết bị hiệu chuẩn máy đo độ ồn Hangzhou Aihua AWA6221A (94dB & 114dB)Sound Calibrator
Specifications
PERFORMANCE SPECIFICATIONS
-
Normal sound pressure level: 94 dB, 114 dB
- Normal frequency: 1000 Hz
- Sound level accuration: ±0.2 dB(+23 ℃)
- Frequency accuration: ±1 %±0.3 dB(-10 ℃+50 ℃)
- Distortion(THD): < 1 %
POWER SUPPLY
- Power : Battery 1×6F22(9V)
- Nominal Operating Current: 15 mA
BATTERY CHECK
As long as the signal continuse for one minute after the contact is releave, otherwise battery low
ENVIRONMENT
- Operating Temperature: -10°C ~ +50°C Humidity: 25% ~ 90%(RH)
- Atmospheric Pressure: 65 kPa ~ 108 kPa