按 GB510-65测定石油产品凝点,手续较复杂,局限性也较大,且易造成人为误差。为此,我们于1977年4月研制成功一台石油产品凝点自动分析仪。一、工作原理本仪器采用半导体致冷,双臂58欧热导池铼钨丝作测温元件,及一套自控电路完成测定过程中各动作。仪器的工作原理见图1。测定时,将试 Press GB510-65 determination of petroleum products freezing point, the procedure is more complicated, the limitations are larger, and easily lead to human error. To this end, we successfully developed in April 1977 a petroleum products freezing point automatic analyzer. First, the working principle of the instrument using semiconductor cooling, arms 58 European heat conductivity of the rhenium Tungsten wire for temperature measurement devices, and a set of self-control circuit to complete the determination of the movements. The working principle of the instrument is shown in Figure 1. Determination, the test will be