Dust measuring device that complies with tunnel dust control guidelines!
As of April 1, 2021, the "Guidelines for Dust Control Measures in Construction Work such as Tunneling" have been implemented, and the "Measurement of Dust Concentration in the Air in Areas Close to the Face" has been newly established. There may be cases where conventional dust meters cannot be used, but by attaching a specialized accessory (particle size device) to this product, measurements can be taken in accordance with the new guidelines. Due to limited stock availability, we kindly ask you to contact us as soon as possible.
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basic information
●Points to Note for Dust Measurement in Tunnel Construction 1. Measurement Locations: Install a total of 6 measurement points on the wall side at approximately 10m, 30m, and 50m from the face. 2. It is necessary to use measuring equipment equipped with a particle size device that can appropriately size respirable (inhalable) dust (with a particle size characteristic of 4μm 50% cut). 3. The measuring equipment used for relative concentration indication must have a pump flow rate that allows the particle size device to function properly, and it should be calibrated by the Japan Measurement and Calibration Association. 4. It can be used as the "value indicated by the Director of the Labor Standards Bureau of the Ministry of Health, Labour and Welfare" as stipulated in Article 1, Paragraph 1, Item 6 (b) of the "Methods for Measuring and Evaluating Dust Concentration in Underground Workplaces Engaged in Dust Work." 5. Mass concentration conversion factor for this product "LD-5R": 0.002 (mg/m3/cpm) Based on the above, dust measurement for tunnel work requires the installation of the "LD-5R" and the accompanying particle size device (PM4 cyclone) at a total of 6 locations.
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Applications/Examples of results
Measurement of dust concentration in the tunnel, etc.
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Company information
The work of Nippon Marts Co., Ltd. is to support customers by providing machinery for their on-site needs. However, regardless of how thoroughly we prepare, malfunctions and defects in machinery can occur. This is why our responsiveness is what customers choose us for. We will respond to various situations with determination and a spirit of challenge, never backing down from any unreasonable demands.
