เครื่องวัดระดับเสียง เครื่องวัดความดังเสียง Sound Level Meter DT-8852

This is a brand new CEM DT-8852    certified digital sound / noise level meter.  This meter has a built-in USB port which connects to a laptop PC for recording the sound level over a period of time.  This is an ideal instrument for noise monitoring in factory, school, business and traffic areas.  This meter conforms to the IEC61672-1 Class 2 and ANSI S1.4 Type 2 standards.

With its internal memory, this unit can record sound level over a period of time without connecting to a computer.  This device operates on a 9V battery (about 30 hours) or an AC adapter (included).  It is very accurate (+/- 1.4 dB) and durable, an ideal companion for your field projects.  A heavy duty carrying case is also included for the protection of the device and your convenience.

•   • Professional heavy duty model
•   • A & C frequency weighting
•   • MIN and MAX sound level hold
•   • Over range / under range display
•   • Fast (125ms) and slow (1s) time weighting
•   • Analog AC/DC output for connection to frequency analyzer or X-Y shaft recorder
•   • Built-in memory for stand-alone field recording
•   • Threaded tripod mount (will mount to most standard tripods)
•   • USB interface for computerized digital sound level recording

 • Conforms to the IEC61672-1 Class 2 and ANSI S1.4 Type 2 standard for sound level measurement

 • Auto power off (can be disabled) 
 • Backlit digital display 
 • User friendly calibration process  

Specifications:

• Sound measurement ranges:
  • Lo: 30 to 80dB
  • Med: 50 to 100dB
  • Hi: 80 to 130dB
  • Auto: 30 to130 dB
• Resolution: 0.1dB
• Accuracy: ±1.4dB
• Frequency range: 31.5 Hz to 8KHz
• Dynamic range: 50dB Level ranges
• Time weighting:
  • Fast: 128ms
  • Slow: 1 second
• Microphone: 1/2" Electret condenser microphone

  
  

• Display refresh rate: 2 times / second
• Analog output AC: 1Vrms, DC: 10mv/dB
• Sampling rate: 1 to 59 seconds
• Memory capacity: 32600 samples
• Power supply: (1) 9v alkaline battery
• Battery life: approximately 30 hours
• Operating altitude: <2000 meters
• Operating humidity range: 0 to 90% RH
• Operating temperature range: 32° to 104° F (0° to 40° C)
• Storage humidity range: 0 to 70% RH
• Storage temperature range: 14° to 140° F (-10° to 50° C)
• Dimensions (HxWxD): 278mm x 76mm x 50mm
• Weight: 12.5oz (350g) without battery installed

Included Accessories:: 

• 8852 Sound meter 
• 9v alkaline battery
• Tripod 
• Operation Manual 
• 110/240vAC to 9vDC Power supply
• USB Cable
• Windows^® software on CD-ROM (Hardware Requirements: Windows^® VISTA Operating system 486 PC or above)
• Gift Box with Carrying Case