Extech 407790A: Real Time Octave Band Analyzer

เครื่อง มือวิทยาศาสตร์ อุปกรณ์วิทยาศาสตร์ > เครื่องวัดเสียง  > เครื่องวัดวิเคราะห์ระดับความดังเสียง > Sound Level Meter/Datalogger

Display Function: Lp, Leq, LE, Lmax, Lmin, L05, L10, L50, L90, L95,

407790A: Real Time Octave Band Analyzer with USB ยี่ห้อ Extech, USA

Type 2 integrating sound level meter with Octave and 1/3 Octave Band real time display

Extech’s Type 2 Integrating Sound Level Meter with Octave and 1/3 Octave Band Real Time is displayed on a large 3.5" 320x240 TFT color backlit LCD.

Features:
 
  • Wide measurement in 5 ranges: 20 to 90dB, 20 to 100dB, 20 to 110dB, and 30 to 120dB, 40 to 130dB
  • 3.5" (320x240) TFT color LCD with backlight feature displays Leq, LE, Lmax, Lmin, Lp, L05, L10, L50, L90, L95
  • Stores readings on microSD card
  • Precise linearity over wide range (100dB)
  • Transferred data to a PC to be analyzed using software and cable provided
  • A, C and Z weighting with Fast or Slow response
  • 25Hz to 10kHz frequency response
  • Meets ANSI and IEC Type 2 standards
  • Internal self test when powered ON
  • Detachable 0.52" (13.2mm) diameter condenser microphone and Tripod mount provided on rear
  • Analog AC/DC recorder output
  • Real time clock with Year, Month, Day, Hour, Minute and Second display
  • Optional microphone extension cable for measurements in enclosures and other remote locations (407764-EXT)
  • Complete with Windows® compatible software, USB cable, 4 x C batteries, microphone wind screen, mini screwdriver, 120V AC adaptor, and case
 
For complete specs please download the product datasheet (not available for some accessories)
 
Specifications:
 Applicable standards  ANSI S1.4 Type 2, EN IEC 60651, EN IEC 60804, and EN IEC 1260-1995
 Accuracy  ±1.5dB (ref 94dB @ 1kHz)
 Measurement functions  Lp, Leq, LE, Lmax, Lmin, L05, L10, L50, L90, L95,
 Frequency range  25Hz ~ 10kHz
 Frequency Weighting  A, C, and Z
 Time Weighting  Fast, Slow, 10ms (τ), I
 Display  3.5" (89mm) 320x240 TFT color backlit LCD; Displays 1/1, 1/3, and 1/1 & 1/3
 1/1- 1/3 Analyzer level range  5 ranges in 10db steps: 20 to 90dB, 20 to 100dB, 20 to 110dB, 30 to 120dB, 40 to 130dB
 1/1 Octave and 1/3 Octave  1/1 Octave band center frequencies: (9 bands);
 1/3 Octave band center frequencies: (27 bands)
 Signal output  AC output: 1 Vrms (at full scale); DC output: 3.0V, 25mV/dB
 Memory  microSD card (included)
 Measurement Time  1s to 23h 59m 59s
 Power  Four type C size 1.5V batteries, External DC power: 6V, 1A
 Dimensions  13.6 x 3.9 x 2.4" (345 x 100 x 60mm)
 Weight  33.5oz (950g)
Extech’s Type 2 Integrating Sound Level Meter with Octave and 1/3 Octave Band Real Time
is displayed on a large 3.5" 320x240 TFT color backlit LCD.

The 407790A allows the following quantity measurements.
Simultaneous measurements of all items with selected time weighting and frequency characteristics.
 • Sound level  Lp
 • Equivalent continuous sound  Leg
 • Sound exposure level  SEL
 • Maximum sound level  Lmax
 • Minimum sound level  Lmin
 • Percentile sound level  LN (L05, L50, L90, L95) calculated from Lp
 • Frequency rating  A, C, Z
 • Time weighting
   Main Channel
   Sub Channel
 
 Fast, Slow, 10ms, impulse
 Fast, Slow, 10ms, impulse

Applications:

   - Real time analysis of noise from any source such as machinery or vehicles
   - Monitor office or plant noise and store data for later reference and analysis
   - Maintain noise level statistics for internal and external audits
   - Perform machinery noise monitoring or use for noise reduction programs
 
Accessories:
   •  Complete with Windows® compatible software, USB cable, 4 x C batteries, microphone wind screen, mini screwdriver, 120V AC adaptor, and case
CE  NIST   เครื่องวัดเสียง Real Time Octave Band Analyzer, Logging on microSD card รุ่น 407790A
Ordering Information:
407790A............Real Time Octave Band Analyzer
407764-EXT......15ft (4.7m) Microphone Extension Cable
407744..............94dB Sound Level Calibrator
407766..............94/114dB Sound Level Calibrator

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