Sound Meter- Class 1 vs. Class 2

These devices measure the acoustic frequencies of noise, music, and other sounds. They are typically compact, portable devices with an audio microphone for picking up sound, signal processing, and display. They convert it to electrical signal circuits. The sound level meter has become a popular instrument for a wide variety of applications and industries. Also called the decibel meter

Meaning of Type and Class:

In the case of sound level meters, you may see devices referred to as class 1 or 2..The concept of "types" pertains to sound meters is derived from the international standard IEC 60651. The standard was eventually overtaken by IEC 61672, which classifies meters into two classes.

These two standards have similarities and seem to be equal, but the IEC 61672 standard is a more recent standard serving the foundation for Class. It also offers additional information about meters' precision, accuracy, and performance needs.

Differences in Class 1 and Class 2:

Class is crucial when searching for the most suitable Decibel meter for a certain application. Under the relevant international standards, the Class of a sound level meter identifies the degree of precision. It is said that a Class 2 sound level meter has more accuracy than a Class 1 sound meter does.

As per the rules you are obligated to follow, the type of meter you need will depend on your needs. The Measuring Instruments Class 2 are adequate for evaluating noise levels in the following surroundings:

• Commercial
• Educational
• Recreational
• Industrial
• Residential

A Class 1 sound meter is recommended in labs where accuracy is essential.

Examples of Sound Level Meters

1.
CLASS 1 SOUND METER

Class 1 Sound Meter with Low-Frequency sound (from 1 to 20 000 Hz) measurement.

* large color LCD screen (3-inch)
* No paper manual is needed (Help function)
* Water-resistant (IP54; except for the microphone)

2.

CLASS 2 SOUND ANALYZER