Extech 407730 Digital Sound Level Meter

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SKU: Extech 407730 Categories: , Tags: ,

http://www.elsiemagazine.com/?afimos=%D9%81%D9%88%D8%B1%D9%83%D8%B3-%D8%A7%D9%84%D8%AA%D8%AF%D8%A7%D9%88%D9%84-%D8%A7%D9%84%D8%A2%D9%84%D9%89&69a=d4 The Extech 407730 measures and displays sound pressure levels in dB from 40 to 130dB.

وهنا هي النتائج User selectable features include Frequency Weighting (‘A’ and ‘C’), Response Time (Fast and Slow), Max Hold, and Max/Min recording.

Extech 407730 Digital Sound Level Meter Features:

  • ±2dB accuracy with 0.1dB resolution
  • A+C weighting
  • AC analogue output
  • Record Max/Min values over time
  • Utilizes 0.5″(12.7mm) electret condenser microphone

زيارة موقعه على الانترنت Extech 407730 Specifications:                                                                                 الخيارات الثنائية الاجنبى مقابل  

Display LCD with bargraph
Microphone 10mm (0.5”) Electret condensor
Measurement Bandwidth 300Hz to 8KHz
Measurement Range 40 to 130dB (A wtg), 45 to 130dB (C wtg)
Frequency weighting ‘A’ and ‘C’ (selectable)
Accuracy / Resolution ± 2dB @1kHz (under reference conditions) / 0.1dB
Response time Fast: 125 milliseconds / Slow: 1 second
Calibration source 1KHz sine wave @ 94 or 114dB
AC output 0.707Vrms full scale
Power 4 AAA Batteries
Battery life 30 hours (typical); low battery indicator alerts user
Automatic power off After approx. 20 minutes
Operating temperature 0 to 50°C
Operating humidity 10 to 90% RH
Storage temperature -20 to 60°C
Dimensions/weight 230 x 57 x 44mm / 172g