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 Display Type Battery Type Calibrated Fast/Slow Time Averaging Data Logging Interface Type Maximum Frequency Maximum Operating Temperature
    RS Stock No. 122-4294
    BrandRS PRO
    £371.00
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    130dB 30dB 0.1 dB - - A, C LCD AA, LR6 - - Yes USB 8kHz +50°C
    RS Stock No. 122-4295
    BrandRS PRO
    £440.00
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    130dB 30dB 0.1 dB - - A, C LCD AA, LR6 RSCAL - Yes USB 8kHz +50°C
    RS Stock No. 123-2225
    BrandRS PRO
    £284.00
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    130dB 30dB 0.1 dB ANSI S 1.4: 1983 Type 2, IEC 61672:2013 Class 2 - A, C LCD 9 V Battery - - - - 8kHz +50°C
    RS Stock No. 123-2308
    BrandRS PRO
    £353.00
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    130dB 30dB 0.1 dB ANSI S 1.4: 1983 Type 2, IEC 61672:2013 Class 2 - A, C LCD 9 V Battery RSCAL - - - 8kHz +50°C
    RS Stock No. 123-2337
    BrandRS PRO
    £246.41
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    - - 0.1 dB - Yes A LCD AAA RSCAL - - - 10kHz +50°C
    RS Stock No. 123-2227
    BrandRS PRO
    £177.41
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    - - 0.1 dB - Yes A LCD AAA - - - - 10kHz +50°C
    RS Stock No. 123-2342
    BrandRS PRO
    £434.40
    Each
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    - - 0.1 dB - Yes A LCD AAA RSCAL - - RS232 10kHz +50°C
    RS Stock No. 123-2228
    BrandRS PRO
    £365.40
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    - - 0.1 dB - Yes A LCD AAA - - - RS232 10kHz +50°C
    RS Stock No. 123-2226
    BrandRS PRO
    £870.00
    Each
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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. 123-2320
    BrandRS PRO
    £939.00
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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 RSCAL - Yes USB 8kHz +50°C
    RS Stock No. 146-4650
    BrandRS PRO
    £99.00
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    130dB 30dB 0.1 dB - - A, C, Z LCD NEDA 1604 - Both No - 8kHz +50°C
    RS Stock No. 146-4651
    BrandRS PRO
    £273.00
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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. 146-4654
    BrandRS PRO
    £1,368.59
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    - - - - - - TFT LCD LR14 - - - USB 10kHz +50°C
    RS Stock No. 146-4655
    BrandRS PRO
    £1,569.86
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    - - - - - - TFT LCD LR14 - - - USB 20kHz +50°C
    RS Stock No. 174-9559
    BrandRS PRO
    £321.57
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    140dB 70dB 1 dB ANSI S1.25, IEC 61252 Yes A, C, Type 2, Z LCD Li Polymer - Both Yes USB - +50°C
    RS Stock No. 155-8902
    BrandRS PRO
    £34.00
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    130dB 35dB - - - A, C LCD - - - - Bluetooth 8kHz -
    RS Stock No. 789-8902
    Mfr. Part No.SU 130.
    BrandSauter
    £110.33
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    130dB 30dB 0.1 dB ISO 961-200 - A LCD - - - - RS232 - -
    RS Stock No. 477-110
    Mfr. Part No.CEL-240
    £276.43
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    130dB 30dB - ANSI S1.4, IEC 60651, IEC 61672 Yes A, C LCD AAA - Both Yes USB - +40°C
    RS Stock No. 492-317
    Mfr. Part No.CEL-240
    £345.43
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    130dB 30dB - ANSI S1.4, IEC 60651, IEC 61672 Yes A, C LCD AAA RSCAL Both Yes USB - +40°C
    RS Stock No. 912-0172
    Mfr. Part No.SM-10
    BrandAmprobe
    £227.00
    Each
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    130dB 35dB 0.1 dB ANSI S1.4 Type 2, IEC 651 Type 2 - A, C LCD - RSCAL - - - 8kHz -
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