เครื่องวัดเสียง รุ่น AZ-8922 แบรนด์ AZ INSTRUMENTS

Digital Sound Level Meter 

Features:

• Quasi-Analog bar indicator:1dB display steps, 50dB display range, updated every 50ms.
• Measurement level range features 6 ranges.
• Background noise absorber mode filters ambient sounds.
• Fast( 125 msec.) or Slow( 1 sec.) respone 3 times.
• Record Max / Min. & Maximum Hold function.
• A / C Weighting selectionable.
• Microphone : 6mm(Dia.)electric condenser type.
• Backlight for use in dark areas (Model 8922).
• Low battery indicator.
• Optional RS232 software (Disk & PC cable).
• Serial formt: 2400Baud rate, 1 Stop bit, 8 Data bits. N: xxx, xdB
• Monitor the sound levels from traffic noise, alarm systems and workplace machinery,
• Multi-Freguency calibration to ensure quality stable.

Specifications

• Auto range :30-130dB.
• Big LCD :42x64mm.
• Measurement level range : 6 ranges in 10-dB steps:30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB.
• Accuracy : ±1.5dB ( under reference condition )
• Digital display :3-1/2 dight LCD, 0.1dB resolution updated 0.5seconds.
• Analog output :AC:0.707vrms( at full scale )
• DC:10mV/ dB
• Measurement frequency range : 31.5Hz-8KHz.
• Measurement level A weighting :30dB~130dB.
• Measurement level C weighting :35dB~130dB.
• Operation temperature :0~50,10~90%RH
• Storage temperature :-20~60
• Meter includes hard ABS case, battery, manual.
• Battery life :20 hours typical (9V)
• Dimensions (meter WxHxT) :280*80*12mm