Abstract:
Disclosed therein are an inspection apparatus for a thermo-hygrometer based on phase change and methods for controlling and inspecting the same which can simultaneously inspect a thermometer and a hygrometer through a simple method using a phase change of reactants. The thermo-hygrometer based on phase change includes: reactants of at least two kinds; a plurality of cylinder type cells; a reactor body having a temperature sensor hole and a plurality of cell holes; a flow pipe in which a first gas circulates by a circulation pump; a relative humidity chamber which has a relative humidity sensor disposed therein; and a temperature control unit which is mounted below the reactor body, wherein when a phase change of a first reactant is induced, the relative humidity sensor is inspected based on the relative humidity of the first gas, and the temperature sensor is inspected based on the phase change temperature of the first reactant.
Abstract:
The present invention relates to a dual cap for protecting a humidity sensor of a radiosonde. The dual cap is fixed to a position where a humidity sensor of a sensing unit in a radiosonde of an aerological observation system is disposed so as to surround the humidity sensor, the dual cap including: an outer cap having a first ventilation hole formed on top thereof, a first air circulation door formed on the side periphery thereof to pass air therethrough, and a first wall formed on the side periphery thereof to close the flow of air; and an inner cap located inside the outer cap in such a manner as to be fixed to the outer cap and having a second air circulation door formed on the side periphery thereof to pass air therethrough, the second air circulation door facing the first wall of the outer cap.