如何判断声级计测量结果是准确的?
发布时间：
2020-04-21 00:00
声级计校准证书没有用，只有出具检定证书，得出合格结论及准确度等级的，才能正常使用。声级计日常检定需要的设备很多，需要校准器、标准电容传声器、 信号发生器、测量放大器、猝发音信号发生器、精密衰减器、电压表、声源、消声箱(自由场)等，全部配备齐全至少需要30W以上，且占用场地大，有一定的技 术要求;同时，声级计检定的仪器并不多，标准装置还要每年送检，所以建立整套声学检定装置性价比不高，导致很多省级计量院都没有建立声级计检定装置，无法 出具声级计检定证书。
In the process of using the sound level meter, the sound level meter shall be sent to the metrological institute for verification every year.
The calibration certificate of sound level meter is useless. Only when a verification certificate is issued and a qualified conclusion and accuracy level are reached can it be used normally. Sound level meter daily check need a lot of equipment, calibrator, standard capacitor microphone, signal generator, measuring amplifier and tone burst signal generator, precision attenuator, voltmeter, sound source, silencing box (free), etc., all equipped with complete at least need more than 30 w, and take up space is big, there are certain technical requirements; At the same time, there are not many instruments for sound level meter verification, and standard devices have to be submitted for inspection every year. Therefore, the cost performance of the whole set of acoustic verification devices is not high. As a result, many provincial metrological institutes have not established sound level meter verification devices and cannot issue sound level meter verification certificates.
相关资讯
销售微信
技术微信
沈阳市文飞仪器仪表有限公司
地址：沈阳市和平区三好街100号华强广场D座1904室
网址: www.wenfei.com.cn
电话：024-23842789
邮箱：sywenfei@163.com
copyright © 2022 沈阳市文飞仪器仪表有限公司
