The LD-5D uses a sheathed air detector mechanism and includes a built-in suction pump. It is a relative concentration indicator with a light scattering system, and can perform measurements at tunnel construction sites and other worksites with comparatively high dust concentrations.
\nRelative concentration must be corrected to mass concentration by determining the mass concentration conversion factor (K value) with the filtration collection method as the standard. However, the mass concentration conversion factor is preloaded into the LD-5D, so the measurement value can easily be converted to the mass concentration for display. Note that this indicator has comparable characteristics to existing dust indicators (laser light source types), so mass concentration conversion factors to date can be used at equivalent worksites.
\n\u2022 This product is compatible with the calibration standards of the Japan Association for Working Environment Measurement.<\/p>\n
\u25cf Thanks to the sheathed air mechanism, there are no concerns about contamination of the optical system, and it can be used to provide stable measurements at work sites with high dust concentrations.
\n\u25cf A large filter has been adopted, so it is capable of extended use even for high concentration measurements.
\n\u25cf The extent of filter contamination can be confirmed visually.
\n\u25cf Entering a K value in advance enables the measurement value (CPM) displayed to be converted to mass concentration (mg\/m3).
\n\u25cf A span check and background measurement prior to dust measurements automatically maintain the sensitivity at time of shipment.
\n\u25cf Measurement values (CPM) can be recorded in the main unit. (In logging measurement mode)
\n\u25cf The recorded measurement values can be loaded into a PC and saved in text format using the USB cable and communication software provided.
\n\u25cf During measurement, a voltage or pulse corresponding to the concentration is output.
\n\u25cf It can be powered by dry cells or an AC adapter.
\n\u25cf It can be attached to a commercially available tripod.<\/p>\n","protected":false},"excerpt":{"rendered":"
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