Sound Level Measurement

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Sound Level Measurement

A range of Class 1 and Class 2 Sound Level Meters from Ono Sokki and Pulsar Instruments. Noise meters that are ideal for carrying out occupational, environmental and vehicle noise assessments as well as warning of high noise levels. 

About our noise meters and sound level meters

We offer a range of sound measurement devices, including Class 1 and Class 2 instruments, that are suitable for a range of noise measurements applications including. 

  • Occupational noise assessments
  • Industrial hygiene assessments
  • Environmental noise assessments
  • Vehicle noise measurements
  • Building acoustics
  • Real-time Frequency and octave band analysis
  • Basic noise level testing. 

Our noise meters meet international standards for noise measurement such as IEC 61672-1:2013 and IEC 61672-2:2013.

What is the difference between class 1 and class 2?

A Class 1 sound level meter (often referred to as a precision grade meter) is generally seen as a more accurate noise measurement device that can measure sound over a wider frequency range than a Class 2 instrument.

The classification of noise measurement devices is essential to differentiate between the performance of sound meter microphones. If a noise meter has a ‘class’, it is an instant indicator that the unit complies with the most recent standards (such as IEC 61672:2013).

Basically, the lower the number, the better the accuracy of the product.

How do I know what classification I need?

There are some instances where the classification of your noise meter is critical, and some where it is less so. For example, when measuring occupation noise (under The Control of Noise at Work Regulations 2005) the minimum requirement meter is for Class 2, although it is recommended that you use a Class 1.

Alternatively, if you’re measuring environmental noise, you will be required to use at least a Class 1. This is because Class 2 microphones will not measure low enough sound levels, and do not measure as accurately to higher frequencies.