What is a Digital dust meter?

A digital dust meter is used to measure the concentration of dust in the air of earth, rock, minerals, metals, and carbon, which are substances that are required to measure the working environment based on Article 65 of the Industrial Safety and Health Act in indoor workplaces. It is a small measuring device to be used. The digital dust meter calculates the dust count number (cpm) x K value (mass concentration conversion coefficient: mg / m3 / cpm) per unit time, and measures the dust concentration (mg / m3) accurately and easily. I can. The K value (mass concentration conversion coefficient: mg / m3 / cpm) is a coefficient that converts the count number of dust into dust concentration, and the scattered light amount (cpm) and concentration (mg / m3) of the same type of dust are linear. It is the slope of a straight line obtained by using the fact that it is proportional to. The specifications of this device are specified in JIS Z 8813, and dust detection methods include scattered light method, particle counting method, absorptiometry, and condensed nucleus particle counting method.

Application of Digital dust meter

From Article 21 of the Industrial Safety and Health Act Enforcement Ordinance, the place where the digital dust meter is used corresponds to the indoor work place where dust of earth and stone, rock, mineral, metal or carbon is remarkably emitted. Therefore, it is necessary to control the dust concentration in indoor workplaces where metal welding, polishing, cutting work, or excavation work is frequent. Furthermore, it is known that the sensitivity may differ depending on the type and shape of dust depending on the measurement principle, and the measurement results should be kept in mind that it is easily affected by all suspended particulate matter such as smoke and mist. You are required to manage it.

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