A temperature sensor for surface air temperature observation

Abstract

The invention discloses a temperature sensor for observation of surface air temperature, which comprises a first deflector and a second deflector arranged below the first deflector, both of which are horizontally placed, with a small top and a large bottom circular platform structure , and both are hollow structures with open bottoms, and also include guide rings, which are hollow circular platform structures with large upper and lower bottoms and open bottom surfaces. The bottom edges are overlapped and spliced; the first deflector and the second deflector are connected and penetrated through the heat insulation column, and the upper and lower extension ends are respectively connected with the first reflector and the second reflector. The bottom is equipped with a temperature sensor probe. First of all, this design increases the area of ​​the air inlet to form a wind-gathering slope on the side, which can guide the horizontal airflow higher than the guide ring to enter, so that the measured temperature has good timeliness and increases the ventilation volume, thereby reducing the hysteresis error and enabling The structure has a relatively good ventilation environment and reduces radiation errors.

Description

technical field [0001] The invention relates to the technical field of meteorological instruments, in particular to a temperature sensor used for surface air temperature observation. Background technique [0002] In the temperature observation, the heat exchange between the temperature sensing element and the air is done by heat conduction to establish a heat balance. Since the air has little ability to absorb radiant energy, especially short-wave radiant energy, direct solar radiation and ground reflected radiation will affect the accuracy of sensor temperature measurement under natural conditions. In the process of using the temperature sensor in the weather station for temperature measurement, solar radiation during the day will cause the temperature sensor of the weather station to heat up, making its measured value higher than the air temperature of the surrounding environment. The error caused by this phenomenon is called solar radiation error. At present, the weather...

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Problems solved by technology

The use of blades or rings helps to meet the first requirement, but it is difficult to meet the second requirement, making it difficult to eliminate the effect of thermal pollution

Therefore, there is a contradiction between the above two design requirements, which brings difficulties to the improvement of the performance of the temperature sensor.

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