论文部分内容阅读
温度是化工生产中的重要参数。目前在化工生产中广泛采用接触式测温方法。使用的计量器具大都采用玻璃水银或有机液体温度计,以及配电阻体或热电偶的二次测温仪表。在使用这些测温一次元件时,一般都需加装保护套管进行保护。外套的材料一般选用铁、铜或不锈钢等。采用这些材料制作的外套,能满足一般测温环境的要求,但在强腐蚀的环境中,不锈钢材质的保护套管的使用寿命仅有一周左右。
Temperature is an important parameter in chemical production. Currently widely used in chemical production of contact temperature measurement methods. Most of the measuring instruments used are glass mercury or organic liquid thermometers, and secondary thermometers with resistors or thermocouples. In the use of these components a temperature measurement, generally need to install a protective sleeve for protection. Jacket materials generally use iron, copper or stainless steel. The jacket made of these materials can meet the requirements of general temperature measurement environment. However, the service life of the stainless steel protective sleeve is only about one week in a strong corrosive environment.