HEATED, LIGHT-EXTINCTION TYPE DIESEL SMOKE METER

摘要

Diesel light transmission type smoke meter (LIGHT-EXTINCTION TYPE DIESEL SMOKE METER, or DIESEL OPACITY METER) is to transmit light to the gas containing the soot as a device for measuring the opacity (OPACITY) of the gas in real time, continuously, the sampling probe ( sAMPLING PROBE), the sampling line (sAMPLING lINE), a heater (hEATER) and thermocouple (tHERMOCOUPLE) is installed, the measuring chamber (MEASURING CHAMBER), optics (oPTICAL uNIT), contamination consisting of the light emitting portion (LIGHT TRANSMITTER) and a light receiver (LIGHT RECEIVER) prevent a device consisting of air (aIR pROTECTION, or aIR CURTAIN) supply fan (fAN) and the passage for, micro-controllers, measurement instruction, print and so on. Conventional diesel light transmission type smoke meter for measuring the concentration of soot discharged from a diesel engine, the moisture in the exhaust gas in the sampling line through which the diesel exhaust gas when performing the test in the air of minus 5 ~ 10 ℃ to generate a phenomenon of condensation water.; In the subject innovation in order to compensate for the disadvantages of, the sampling lines of the conventional light transmission type diesel soot meter, and so that the heater (HEATER) and to install a thermocouple feedback (FEEDBACK) controlled at a constant temperature, and can be heated. By doing so, it prevents the condensed water generated was in the sampling line when tested at ambient condition of minus 5 ~ 10 ℃.; Heated diesel light transmission type smoke meter of the subject innovation (HEATED, LIGHT-EXTINCTION TYPE DIESEL SMOKE METER) is,; A sampling probe (12) that is inserted into the end of the exhaust pipe in order to measure the particulate concentration in the exhaust gas discharged from a diesel engine vehicle and diesel,; The sampling lines 13 of the conventional light transmission type smoke meter coupled to the outlet of the sampling probe, devised the present is heatable to a constant temperature by installing an additional heater 14 and the thermocouple 15 to prevent the generation of condensed water and heating type of sampling lines,; Heater and a thermocouple 17 is installed and the exhaust gas and the light-measuring chamber (16) passing through, that is heated to a certain temperature so that the condensation of moisture, which is coupled to the outlet of the heating-type sampling lines occur,; And an optical unit consisting of a soot concentration in the light emitting portion 18 and light receiving portion 19 for the optical measurement method,; And the fan 20 and the flow path for supplying air pollution,; Control interface to the optical portion light source and a light sensor, and controls the heating group of the sampling line at a constant temperature, and to control a fan for supplying the anti-contaminated air, and provides a function of controlling at a constant temperature of the heater wrapped around the measuring chamber, measuring and a microcontroller for converting the density of the soot by using the electrical value,; And measurement instruction unit that displays the measured value as a visually so that the user can easily confirm,; Is composed of a print that can output a test result.