Introduction: The LD-5C laser dust detector adopts the principle of laser detection. The outside air of the detector enters the suction port, the coarse particles are removed by the labyrinth cutter, the external light is shielded, and the detector enters the dark room of the detector. The parallel light in the dark room crosses the field of view of the light-receiving part at right angles to form a sensitive area (the oblique line in the figure). When the dust passes through the sensitive area, the scattered light in the 90°C direction is injected into the photomultiplier tube through the slit and converted into photocurrent. It is converted into the number of pulses per unit time that is proportional to the scattered light by the photocurrent integration circuit. Therefore, the relative mass concentration of dust can be obtained by recording the number of pulses per unit time. Applicable places of this instrument: dust detection on the production site of industrial and mining enterprises; determination of total atmospheric dust concentration; occupational hygiene respirable dust PM10/PM2.5; continuous online monitoring of dust concentration in construction and construction sites; inhalable particulate matter in public places (PM10, PM2.5) and rapid and online detection of atmospheric dust from environmental monitoring departments. Technical Parameters: Measuring range: 0.001～100 mg/M3³ (range can be customized according to user choice). Detection sensitivity: 0.001 mg/M3³; (stearic acid particles with an average particle size of 0.3μm and a geometric standard deviation of 1.25 Sub-corrected value). There are timing measurement and continuous measurement functions. Measurement accuracy: ±8% (relative correction particles), with humidity correction function. Measuring principle: using laser light scattering principle, gas sampling flow rate 3L/min Computer display: microcomputer touch screen, digital display, K value can be set arbitrarily. The particle mass concentration in different places can be used. Online direct reading: the mass concentration of PM10 and PM2.5, respectively display the concentration value of dust, Output: There is a 485 interface, which can be connected to a data acquisition instrument, and the detection data can be remotely transmitted to the control center or remote mobile phone to read the measured value. There is an alarm function, and measurement data and fluctuation graphs can be queried in the data software. Data: with data software (purchased separately) can store 256 sets of data, with real-time measurement and timing storage functions Operation interface: microcomputer touch screen, K value and correction coefficient, direct reading density. Arbitrarily set, Measurement time: The standard time is 90 seconds, and the user can set it arbitrarily. Automatically calculate the standard concentration within the time. Power source: 12V rechargeable battery, can be used continuously for 4 hours, Ambient temperature: -5～40℃
Introduction: The LD-5C laser dust detector adopts the principle of laser detection. The outside air of the detector enters the suction port, the coarse particles are removed by the labyrinth cutter, the external light is shielded, and the detector enters the dark room of the detector. The parallel light in the dark room crosses the field of view of the light-receiving part at right angles to form a sensitive area (the oblique line in the figure). When the dust passes through the sensitive area, the scattered light in the 90°C direction is injected into the photomultiplier tube through the slit and converted into photocurrent. It is converted into the number of pulses per unit time that is proportional to the scattered light by the photocurrent integration circuit. Therefore, the relative mass concentration of dust can be obtained by recording the number of pulses per unit time. Applicable places of this instrument: dust detection on the production site of industrial and mining enterprises; determination of total atmospheric dust concentration; occupational hygiene respirable dust PM10/PM2.5; continuous online monitoring of dust concentration in construction and construction sites; inhalable particulate matter in public places (PM10, PM2.5) and rapid and online detection of atmospheric dust from environmental monitoring departments.
