Extraction type dust meter capable of monitoring condensable particulate matters on line

The utility model relates to an extraction type dust meter capable of monitoring condensable particles on line, and belongs to the technical field of environmental protection monitoring. Comprising a diluent gas system and a sampling measurement system, the diluent gas system comprises an air compressor, and an outlet of the air compressor is sequentially connected with a pressure regulating valve, an electric proportional valve and a first flow meter through a pipeline; the sampling and measuring system comprises a sampling probe rod and a diluting and cooling cavity, the sampling probe rod is connected with the diluting and cooling cavity through a pipeline, an outlet of the diluting and cooling cavity is connected with a first connector of a first tee joint, and a second connector of the first tee joint is connected with a particulate matter sensor; a third connector of the first tee joint is sequentially connected with a vacuum filter, a second flowmeter and a vacuum pump through pipelines; an outlet of t