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。
The in-depth combination risk assessment package for larger applications.
Enhanced data analysis and manipulation
Port…
The leading logging industrial dosimetry package for Health and Safety officers, occupational hygienists and managers.
The leading industrial dosimetry package for Health and Safety officers, occupational hygienists and managers.
The NoiseLog records noise to a standard compact flash card and measures the noise levels in order to provide a clear und…
The new Control of Noise at Work Regulations 2005 require all employers to reduce or prevent the risks to health and safe…
Check noise levels in the workplace, environment, pub or club. Ensure that employees and anyone near a noise source is no…
Check noise levels in the workplace, environment, pub or club. Ensure that employees and anyone near a noise source is no…
Designed for basic spot checking and Noise at Work assessments, noise control and initial environmental assessments this …
AWA5633（D）型声级计是一种袖珍式噪声测量仪器，具有数字显示、最大值保持、自动量程转换、动态范围宽等特点。操作简单，携带方便…
适用标准 IEC 651 Type2
测量范围 A LO (Low) - Weighting: 35- 100dB 、A HI (High) - Weighting: 65-130dB 、C LO (Low) - We…
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