| 摘要 |
PURPOSE:To measure humidity speedily from low-temperature gas to high- temperature gas by providing two temperature sensors, and exposing one temperature sensor to a gas flow and covering the temperature sensing part of the other temperature with gauze. CONSTITUTION:One temperature sensor (dry bulb) 1 has its temperature sensing part exposed and detects the temperature of a hot blast directly and the other temperature sensor (wet bulb) 2 has its temperature sensing part covered with the gauze 3 and detects the temperature of the hot blast indirectly. Then the sensors 1 and 2 are connected to an interface 8, which is further coupled with an arithmetic means (e.g. personal computer) 9, which finds the humidity of high-temperature gas from the measured values of the sensors 1 and 2. In this case, the part covering the wet bulb is 5-30mm and the remainder is sealed by using a tube body; and a supply bin 4 is provided outside the air flow, the amount of water in the supply bin 4 can be reached, and the amount of vapor at the part is adjustable, thereby measuring the humidity from low-temperature gas to high-temperature gas.
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