เครื่องวัดเสียง Real Time Octave Band Analyzer, Logging on microSD card รุ่น 407790A

เครื่องวัดวิเคราะห์ความดังเสียง Integrating Sound Level Meter with Octave and Leq, LE, Lmax, Lmin, Lp, L05, L10, L50, L90, L95, Logging on microSD card ยี่ห้อ Extech, USA

Description

เครื่องมือวิทยาศาสตร์ 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″ 320×240 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″ (320×240) 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) 320×240 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″ 320×240 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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