It is widely used by professionals in the fields of environmental monitoring, industrial noise measurement, building acoustics, and health and safety, among others. The LD 824 meets the highest standards for sound level measurement, making it suitable for a wide range of applications that require accurate and reliable data collection.

The LD 824 is classified as a Class 1 sound level meter, which means it adheres to the most stringent accuracy requirements defined by international standards, such as IEC 61672-1 and ANSI S1.4. Class 1 meters are intended for high-precision applications where measurement accuracy is critical.

The LD 824 can measure a wide range of sound levels, from 30 dB(A) (quiet environments) to 140 dB(C) (loud sounds). This makes it suitable for measuring everything from background noise to industrial machinery noise or even impulsive sounds.

When paired with a Class 1 microphone, it provides precise, high-accuracy sound measurements in a range of professional environments, including environmental monitoring, building acoustics, and sound system optimization.

The Class 1 microphone used with the XL2 ensures high-precision measurements that comply with international standards, such as IEC 61672-1 and ANSI S1.4, making the system ideal for applications that demand the highest accuracy.

The XL2 can perform detailed 1/1-octave and 1/3-octave band analysis, providing a breakdown of sound energy across different frequency bands. This is essential for evaluating the acoustic quality of a space or assessing the noise profile of sound sources.

Tapping Machine Type 3207 is an impact sound generator for measuring impact sound levels. The generator uses five hammers each weighing 500 g and operating at 2 Hz dropping from a height of 40 mm, giving an operating frequency of 10 Hz. 

The instrument used for measuring impact noise and sound transmission in accordance with international standards for building acoustics. It is primarily used to evaluate impact sound insulation of floors in buildings, particularly to assess how well floors minimize the transmission of sound caused by footsteps, dropped objects, or other impact noises from one level to another.