声级计又叫(噪音计)是噪声测量中最基本的仪器。声级计一般由电容式传声器、前置放大器、衰减器、放大器、频率计权网络以及有效值指示表头等组成。声级计的工作原理是:由传声器将声音转换成电信号,再由前置放大器变换阻抗,使传声器与衰减器匹配。放大器将输出信号加到计权网络,对信号进行频率计权(或外接滤波器),然后再经衰减器及放大器将信号放大到一定的幅值,送到有效值检波器(或外按电平记录仪),在指示表头上给出噪声声级的数值。
HS5660A型精密脉冲声级计是一种便携式声学测量仪器,数字、表针双显示,分档测量,脉冲特性可精确测量冲击声和短持续时间的噪声
主要性能符合《JJG188—2002声级计检定规程》和IEC61672标准对2级声级计要求。HS6288B型噪声频谱分析仪是一种袖珍式智能化的噪声测…
HS5618A型积分声级计是根据国家声级计新标准要求创新研制而成的一种袖珍式智能化噪声测量仪器,主要性能符合《JJG188—2002声级计…
符合国际电工委员会(IEC)651号声级计标准中对作为一般用途的Ⅱ型声级计的要求,也符合GB3785标准的要求。仪器性能稳定,使用简单…
NL-20噪音计 声级Lp,等效连续声级Leq,暴露声压级 LE,最大声级Lmax,最小声级Lmin,百分率声级 LN(5个可选设定)测量时间:10 秒,1分…
Measuring noise really does not have to be complicated, even for the novice, and the Castle GA6224 (Class 1) and GA6226 (…
Recording neighbourhood nuisance noise has always been a costly, time-consuming affair with tape storage, calibration dif…
The SONUS Pocket Dosemeters are designed to be powerful and easy to use. These dosemeters are small and tough so measurem…
Future-proof technology, flexibility through power and an ability to survive, underpin the development ethos of the Castl…
The Castle SONUS is a new range of pocket meters designed for ease of use with the power the cover the work you need,
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