MEASUREMENT DEVICE, CALIBRATION CURVE GENERATION SYSTEM, SPECTRUM MEASUREMENT METHOD, CALIBRATION CURVE GENERATION METHOD, ANALYSIS DEVICE, LIQUEFIED GAS PRODUCTION PLANT, AND PROPERTY ANALYSIS METHOD

The invention provides a measurement device, a calibration curve generation system, a spectrum measurement method, a calibration curve generation method, an analysis device, a liquefied gas productionplant and a property analysis method. The measurement device (200) includes: a container (201) into which sample gas is to be injected; a liquefaction mechanism (210) configured to liquefy the samplegas in the container (201); a near-infrared probe (202) extending from inside to outside the container (201); and a near-infrared measuring instrument (203) configured to measure an absorbance spectrum of the sample gas in a state of being liquefied by the liquefaction mechanism (210), via the near-infrared probe (202). 本发明提供测量装置、校准线制作系统、光谱测量方法、校准线制作方法、分析装置、液化气制造设备以及性状分析方法，测量装置(200)包括：容器(201)，样品气体注入容器(201)；液化机构(210)，使容器(201)内的样品气体液化；近红外探针(202)，从容器(201)内延伸至容器(201)外；以及近红外测量器(203)，通过近红外探针(202)测量通过液化机构(210)而液化的状态的样品气体的吸光度光谱。