방법 to 결정 여부 a 소리 레벨 미터's 측정 is 정확
그만큼 소리 레벨 미터 는 기본 악기 for 측정 소음, and now the 소리 레벨 미터 has been widely used in our social life. 그것 할 수 있다 be used in environmental protection, labor hygiene, industrial enterprises, 과학 연구 and teaching and other fields to complete environmental noise measurement, sound power level measurement, equipment noise measurement and architectural acoustics measurement, etc.
During the use of the sound level meter, it must be sent to the Metrology Institute for verification of the sound level meter every year. After passing the verification, a verification certificate will be issued, and it can be used normal only after a qualified conclusion is drawn.
The calibration certificate of the sound level meter is useless, and it can only be used normally if a verification certificate is issued and a qualified conclusion and accuracy level are drawn. The daily verification of sound level meters requires a lot of equipment, such as calibrators, standard condenser microphones, signal generators, measuring amplifiers, tone burst signal generators, precision attenuators, voltmeters, sound sources, anechoic boxes (free field), etc., all of which are fully equipped and require at least 30W or more, and occupy a large space, and have certain technical requirements. The verification device cannot issue a sound level meter verification certificate.
거기 있다 약간 주의사항 언제 사용 그 소리 레벨 미터. 언제 사용 소리 레벨 미터, 지불 주의 없음 에 연결 the two poles of the battery reversely. 언제 the 소리 레벨 미터 is not used for a long time, the battery should be removed to avoid battery leakage and corrosion of the sound level meter. pay attention to replace the battery in time when the voltage of the sound level meter is 부족.
그 소리 레벨 미터 is powered by batteries. 당신은 해야 한다 확인 여부 the 배터리 전압 충족 the requirements. The switch of the ammeter is set to the "battery position", and the "attenuator" can be set arbitrarily. At this time, the indication on the ammeter should be within the rated battery voltage range, otherwise the battery needs to be replaced. 지불 주의 에 극성 언제 설치 그의 배터리 또는 외부 전원 공급, 지불 주의 에 극성 언제 설치 그의 배터리 또는 외부 전원 공급, 및 기억 아니다 to 역방향 그만큼 배터리.
