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LEAK DETECTION METHOD FOR OPEN EMISSION ANALYSIS, AND OPEN EMISSION ANALYSIS DEVICE
LEAK DETECTION METHOD FOR OPEN EMISSION ANALYSIS, AND OPEN EMISSION ANALYSIS DEVICE
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机译：开放排放分析的泄漏检测方法及开放排放分析装置
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摘要
To simply and reliably detect exhaust gas leaks by an open emission analysis of exhaust gas. Exhaust gas discharged from an exhaust port 7a is taken into an exhaust gas sampling unit 10 together with the surrounding outside air. A leak detection mechanism 50 for detecting the leakage of exhaust gas from a sampling port 11 is provided. The leak detection mechanism 50 includes a temperature sensor including an outside temperature sensor 51 and an inside temperature sensor 52, and a temperature measuring instrument 55 for measuring a temperature difference between the inside and outside temperatures detected by the temperature sensor. A plurality of inside/outside paired temperature sensors is disposed at equal intervals in the circumferential direction of the sampling port 11. When a leak occurs, the temperature of the inside temperature sensors 52 rises and the temperature difference between the inside temperature sensors 52 and the outer temperature sensors 51 increases, and thereby the temperature measuring instrument 55 detects the leak. When a leak occurs in a portion of the circumferential direction, only the temperature difference of the portion where the leak occurs is increased, and the location of the leak is thus identified.
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