How to judge whether the measured value of the noise figure analyzer is accurate?
Noise tester, an instrument for measuring noise, also known as noise meter, decibel meter, sound level meter, noise detector, noise measuring instrument, etc., is an instrument for noise detection and testing in public places such as work sites and squares. According to the measurement accuracy, it can be divided into Class 1 sound level meter and Class 2 sound level meter; according to the type of equipment, it can be divided into handheld, multi-function, integral, noise spectrum analyzer, personal sound exposure meter, etc. Commonly used noise detection instruments and equipment include:
Multifunctional Sound Level Meter
A, C, Z frequency weighting and F, S, I time weighting; statistics, integration, 1/1OCT, 1/3OCT, FFT and digital records; widely used in environmental protection, labor hygiene, industrial enterprises, scientific research and teaching, etc. In the field of environmental noise measurement, sound power level measurement, machine equipment noise measurement and architectural acoustic measurement.
Noise Spectrum Analyzer
Display the sound pressure level of each frequency point of the 1/1 octave filter; it can measure the airport noise and calculate Td, LEPN, LAmax, LA'max.
Precision Integral Sound Level Meter
An integrated average sound level meter that can measure time-averaged sound levels and an integrated sound level meter that can measure sound exposure. It can also measure statistical percent sound levels and cumulative percent sound levels (statistical sound levels); it can be widely used in environmental protection, In the fields of labor hygiene, industrial enterprises, scientific research and teaching, etc., complete environmental noise measurement, airport noise measurement, machine equipment noise measurement and architectural acoustic measurement.
Digital Sound Level Meter
A, C, Z frequency weighting; F, S, I, Peak time weighting; can be used for industrial noise measurement of various machines, vehicles, ships, electrical appliances, etc., and can also be used for environmental noise, labor protection, and industrial hygiene measurement.
Octave Band Sound Level Meter
Multiple analysis functions, statistics, integration, 1/1OCT, 1/3OCT, FFT and digital recording can be started synchronously or asynchronously; widely used in environmental protection, labor hygiene, industrial enterprises, scientific research and teaching, etc., to complete environmental noise measurement, sound power Level measurement, noise measurement of machinery and equipment, and building acoustics measurement.
