Online detection method of direct-reading dust concentration measuring instrument

• Main Authors: ZHU YONGBIN, GU JUN, SHAO GUOXIN
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides an on-line detection method of a direct-reading dust concentration measuring instrument. The method comprises the steps of (1) starting an air extracting pump, sucking air in ato-be-detected area into an air inlet joint from a sampling head, keeping the thickness and flow direction of the air to be the same as those of an air cavity under the rectification and guidance of the air cavity of a flat air inlet pipe, and extracting the air from an air outlet pipe of an air outlet joint; 2) starting a light beam emitter; enabling the light beam emitted from a light beam eduction tube to traverse the gas flowing through the detection area; when particles exist in the gas, enabling a light beam machine to generate refraction or reflection; at the moment, after the light beam receiver at the upper part receives the information of the light beam, reading the content or the concentration of the particles in the detection gas; meanwhile, the directly emitting light beams emitted from the light beam