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RS-232 Sound Level Meter Digital Decibel Reader

RS-232 Sound Level Meter Digital Decibel Reader
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Item #:001-7320

Multi-functional Digital Sound/Noise Level Meter w/ RS-232 Interface

This noise measuring meter is designed to meet the measurement requirement of noise engineers, noise quality control and health prevention in various environments. Such as noise measurement in factory, office, traffic road, family and all other noise measurement applications.


  • Designed according to following standards:
    a. International Electrician Committee Standard: IEC 651 TYPE 2
    b. US National Standard: ANSI 1.4 TYPE 2
  • With Alarm Set And Alarm Output
  • Widely Used to Test The Sound Level of Environment , Machine, Vehicle, Ship And Other Noise
  • 4 Measurement Parameters:
    Lp: Current Sound Pressure Level
    Leq: Equivalent Continuous A Sound Pressure Level, i.e. Arithmetically Mean Value in A Period of time Set.
    L N: Statistic Analysis, i.e. What Percent of All Measurement Values are Larger than or Equal to the Alarm Value Set by the User. For Setting The Alarm Value.
  • A / C / Flat Frequency Weighting
    a. With 'A' Weighting Selected , The Frequency Response of The Meter Is Similar to The Response of The Human Ear. 'A' Weighting Is Commonly Used for Environmental or Hearing Conservation Programs Such As OSHA Regulatory Testing And Noise Ordinance Law.
    b. 'C' Weighting Is A Much Flatter Response And Is Suitable for The Sound Level Analysis of Machines, Engines,etc.
  • Fast (High Speed) Rate to Pick Up the Current Reading
  • Slow (Low Speed) Rate to Pick Up the Reading of Average within 1 Second
  • Auto Range Selection And Digital Display with No Guessing Errors
  • Manual or Automatic Shut Down. The Tester Can Be Switched Off by Pressing The Power Key at Any Time. On The Other Hand, The Tester Can Be Set to Auto Power Off Between 1 to 9 Minutes or disable Auto Power Off
  • The Tester Can Memorize 30 Groups of Measurement Results And Measuring Conditions For Later Use or Download to Computer
  • Can Connect to Computer for Statistic, Printing And Analyzing by The Optional Cable And The Software For RS232C Interface
  • AC and DC Analogy Signal Output are Available connecting to Frequency Analyzer Level Recorder, FFT Analyzer And Graphic Recorder etc. for Data Statistical Analysis


    Operating Voltage

    14mm (0.55") LCD with backlight

    Accuracy +/-1dB
    Resolution 0.1dB
    Memory 30 Groups with Measuring Conditions
    Built-in Calibration Signals 94dB at 1kHz (Sinusoidal)
    Frequency Range 20.0 to 12,500Hz
    Frequency Weighting Characteristic A, C and F (Flat)
    Alarm Value Set 30-130dB
    Alarm Output LED and Optional Relay Contact (NC)
    PC Interface RS232C
    Power Supply 4x 1.5v AAA (UM-4 Battery)
    External DC Power Supply 6V DC, 100mA
    Time Weighting FAST (125ms)/SLOW (1second)
    Size 236 x 63 x 26 (mm)/ 9.3" x 2.5" x 1.0"
    Weight 170g
    Auto Power Off Function Yes
    Microphone 1/2" Electret Condenser Type
    Low Battery Indication Yes
    Parameters Measured: Lp, Lmax, Leq, L N
    Lp 30-130dB (A), 35-130dB (C), 40-130dB (F)
    Leq 30-130dB (10s, 1min, 5min, 10min, 15min, 30min, 1hour, 8hours, 24hours)
    L N 0-100%

Standard Package Includes:

  • 1x Sound Level Meter
  • 1x Sponge Ball
  • 1x Operation Manual
  • 1x Plastic Carrying Case

Please kindly know that batteries and the RS232C cable is not included. Thank you.

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