The LD-5R PM2.5 digital dust indicator

1. Overview

• The LD-5R digital dust indicator is a relative concentration meter based on the light scattering method. It measures the dust level in less time than the filtrated collection method. Due to its characteristics, the relative concentration may be converted into mass concentration with the use of the coefficient of conversion into mass concentration (K factor) calculated on the basis of the filtrated collection method. The LD-5R PM2.5 digital dust indicator is a combination of the LD-5R with a PM2.5 cyclone particle size selector to perform the simplified measurement of PM2.5 concentrations

2. Specifications

• Measuring Principle: Light scattering method
• Light Source: Laser diode
• Measurement Sensitivity: 1 CPM = 0.001 mg/m3 (for standard particles)
• Measurement Range: 0.001 to 10.000 mg/m3 (for standard particles)
• Suction Flow Rate: 1.7 L/min
• Display: Color graphic LCD
• Dimensions: 184 mm W × 68 mm D × 109.5 mm H
• Weight: Approx. 1.1 kg (incl. batteries)

3. Applications

• Measurement of dust concentration in office buildings and indoor public place
• Measurement of dust concentration in factories for occupational health purposes
• Measurement of dust concentration at construction sites
• Simplified monitoring for PM2.5 digital dust indicator only