Sound Level Meters

Sound level meters are handheld electronic devices that take acoustic measurements. They provide readings on the noise level in an environment and usually return a measurement in decibels (dB). Sound level meters are also called decibel meters or noise meters.

Most meters feature an integrated digital display and some have an inbuilt datalogging memory to store readings. Many models can be attached to a smartphone or tablet and the data easily shared. Some models need connecting to a computer to export data.

What is the difference between Class 1 and Class 2?

There are two classes of sound meter; Class 1 and Class 2 (also referred to as Type 1 or Type 2). Sound level meters are given a classification of I or II depending on which international standard they meet. Type 1 or Class 1 sound meters are used for incredibly precise noise measurements (such as in laboratories) as they are able to measure the smallest sound levels. Class 2 sound level meters are usually used in workplaces for assessing and measuring noise.

What is weighting?

Weighting refers to the frequency range that is measured. Some sound meters will only measure one frequency range, while other models are able to measure all.

  • A frequency covers a 20 Hz to 20 kHZ range. However, the sound is cut from the lower and higher ends of the spectrum in order to approximate the frequency that is audible to the human ear.
  • C frequency can measure much higher noise levels, but still covers the frequency heard by the human ear.
  • Z frequency covers the whole frequency range between 10Hz to 20 kHZ, ±1.5dB.
  • Should I calibrate my sound level meter?

    Considering a calibration service your sound level meter will ensure that it always returns the most accurate measurements. It provides you with absolute confidence that your instrument works as expected with the highest accuracy.

    What is a dosimeter?

    Sound level meters measure the noise within a whole environment whereas dosimeters measure personal exposure to noise. Dosimeters (or dosemeters) are typically attached to an individual at work to monitor noise levels.

    Why would I use a sound level meter?

    Sound level meters will give you measurements on the level of noise within an environment. High noise levels can damage hearing, cause hearing loss and can have a detrimental effect on health. With a reading from a sound meter, you can make sure that you have the correct measures in place (such as slowing down machinery to minimise excess noise) and appropriate PPE (Personal Protective Equipment) to minimise risk.


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    Description Price Maximum Sound Level Minimum Sound Level Resolution Accuracy Class DOSE Measurement Weighting Communication Protocol Display Type Battery Type Fast/Slow Time Averaging Data Logging Interface Type Maximum Frequency Maximum Operating Temperature
    RS Stock No. 123-2228
    BrandRS PRO
    $686.26
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    units
    - - 0.1 dB - Yes A - LCD AAA - - RS232 10kHz +50°C
    RS Stock No. 122-4294
    BrandRS PRO
    $858.21
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    130dB 30dB 0.1 dB - - A, C - LCD AA - Yes USB 8kHz +50°C
    RS Stock No. 123-2226
    BrandRS PRO
    $1,676.94
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    130dB 30dB 0.1 dB ANSI S 1.4: 1983 Type 2, IEC 61672-1:2013 Class 2 - A, C - LCD AA - Yes USB 8kHz +50°C
    RS Stock No. 123-2225
    BrandRS PRO
    $684.41
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    130dB 30dB 0.1 dB ANSI S 1.4: 1983 Type 2, IEC 61672:2013 Class 2 - A, C - LCD 9V - - - 8kHz +50°C
    RS Stock No. 193-8698
    BrandRS PRO
    $299.73
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    130dB 30dB 0.1 dB IEC 61672-1:2002 Class 2 - A, C - LCD - Both Yes - 8kHz +40°C
    RS Stock No. 155-8902
    BrandRS PRO
    $134.84
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    130dB 35dB - - - A, C - LCD - - - Bluetooth, WiFi 8kHz -
    RS Stock No. 146-4650
    BrandRS PRO
    $422.48
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    130dB 30dB 0.1 dB - - A, C, Z - LCD NEDA 1604 Both No - 8kHz +50°C
    RS Stock No. 146-4654
    BrandRS PRO
    $4,777.42
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    - - - - - - - LCD LR14 - - USB 10kHz +50°C
    RS Stock No. 174-9559
    BrandRS PRO
    $2,594.75
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    140dB 70dB 1 dB ANSI S1.25, IEC 61252 Yes A, C, Type 2, Z USB LCD Li-Polymer Rechargeable Both Yes USB 8kHz +50°C
    RS Stock No. 146-4651
    BrandRS PRO
    $1,108.98
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    130dB 30dB 0.1 dB - - A, C, Z - LCD NEDA 1604 Both Yes Micro USB 8kHz +50°C
    RS Stock No. 123-2227
    BrandRS PRO
    $686.28
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    - - 0.1 dB - Yes A - LCD AAA - - - 10kHz +50°C
    RS Stock No. 789-8902
    Mfr. Part No.SU 130
    BrandSauter
    $313.75
    Each
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    130dB 30dB 0.1 dB ISO 961-200 - A - LCD - - - RS232 - -
    RS Stock No. 668-0839
    Mfr. Part No.SM-10
    BrandAmprobe
    $497.00
    Each
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    130dB 35dB 0.1 dB ANSI S1.4 Type 2, IEC 651 Type 2 - A, C - LCD - - - - 8kHz -
    RS Stock No. 477-110
    Mfr. Part No.CEL-240/RS
    $982.22
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    130dB 30dB - ANSI S1.4, IEC 60651, IEC 61672 Yes A, C - LCD AAA Both No USB - +40°C
    RS Stock No. 498-0102
    Mfr. Part No.0563 8155
    BrandTesto
    $513.13
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    130dB 32dB 0.1 dB IEC 60651 Class 2 - A, C - LCD 9V Both - USB 8kHz +40°C
    RS Stock No. 909-3749
    Mfr. Part No.01GA116L
    BrandCastle
    $2,704.38
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    143dB 29dB - - Yes A, C, Z - LCD Alkaline, PP3 Both Yes USB - +50°C
    RS Stock No. 909-1884
    Mfr. Part No.01GA216B
    BrandCastle
    $995.48
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    140dB 35dB 0.1 dB - Yes A, C - LCD Alkaline, PP3 Both Yes - 20kHz -
    RS Stock No. 468-3895
    Mfr. Part No.P01185501Z
    $746.08
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    130dB 35dB 0.1 dB IEC 651 Type 2 - A, C - LCD 9V Both - - - +50°C
    RS Stock No. 909-3742
    Mfr. Part No.01GA116i
    BrandCastle
    $1,989.45
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    140dB 35dB - - Yes A, C - - - - Yes USB 20kHz -
    RS Stock No. 477-100
    Mfr. Part No.CEL-240/K1/RS
    $1,805.36
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    130dB 30dB - ANSI S1.4:1983 Type 2, IEC 60651:1979 Type 2, IEC 61672-1:2002 Class 2 - A, C - LCD AA - Yes - - +40°C