Factors Affecting the Performance of Sound Level Meters and Precautions for Use
Classification of noise meters
1. From the measurement object, it can be divided into the measurement of environmental noise ( sound field ) characteristics and the measurement of sound source characteristics.
2. From the time characteristics of the sound source or sound field, it can be divided into steady state noise measurement and non-steady state noise measurement. Non-stationary noise can be divided into periodic variation noise, irregular variation noise and impulse sound.
3. From the frequency characteristics of the sound source or sound field, it can be divided into broadband noise, narrowband noise and noise containing prominent pure tone components.
4. From the accuracy of measurement requirements, it can be divided into precision measurement, engineering measurement and noise census.
Influence factors of noise meter
1. From the measurement object, it can be divided into the measurement of the characteristics of environmental noise (sound field) and the measurement of the characteristics of the sound source.
2、From the time characteristics of the sound source or sound field, it can be divided into steady state noise measurement and non-steady state noise measurement. The non-stationary noise can be divided into periodic change noise, irregular change noise and impulse sound.
3、From the frequency characteristics of the sound source or sound field, it can be divided into broadband noise, narrowband noise and noise containing prominent pure tone components.
4、From the precision of measurement requirements, it can be divided into precision measurement, engineering measurement and noise census.
Precautions for the use of noise meter
1, should read the manual before use, understand the use of the instrument and precautions.
2, the installation of the battery or external power supply attention to sex, do not reverse connection. Long-term use should be removed from the battery, so as not to leak liquid damage to the instrument.
3、Do not disassemble the microphone to prevent it from falling and place it properly when not in use.
4, the instrument should avoid placing in high temperature, humidity, sewage, dust and high hydrochloric acid, alkali composition of the air or chemical gases.
5, do not disassemble the instrument without authorization. If the instrument is not normal, can be sent to the repair unit or factory overhaul.
6、Taiwan Taishi noise meter pay attention to waterproof, to prevent falling from height.
