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压力式温度计的工作原理 压力式温度计的应用
Release time：2022-10-13
author：Ameya360
source：网络
reading：2187
压力式温度计，是基于密闭测温系统内蒸发液体的饱和蒸气压力和温度之间的变化关系，而进行温度测量的温度计。
一、压力式温度计的工作原理
压力式温度计的原理是基于密闭测温系统内蒸发液体的饱和蒸气压力和温度之间的变化关系，而进行温度测量的。
当温包感受到温度变化时，密闭系统内饱和蒸气产生相应的压力，引起弹性元件曲率的变化，使其自由端产生位移，再由齿轮放大机构把位移变为指示值，这种温度计具有温包体积小，反应速度快、灵敏度高、读数直观等特点，几乎集合了玻璃棒温度计、双金属温度计、气体压力温度计的所有优点，它可以制造成防震、防腐型，并且可以实现远传触点信号、热电阻信号、 0-10mA或4-20mA信号。是使用范围最广、性能最全面的一种机械式测温仪表。
二、压力式温度计的应用
压力式温度计适用于工业场合测量各种对铜无腐蚀作用的介质温度，若介质有腐蚀作用应选用防腐型。压力式温度计广泛应用于机械、轻纺、化工、制药、食品行业对生产过程中的温度测量和控制。防腐型压力式温度计采用全不锈钢材料，适用于中性腐蚀的液体和气体介质的温度测量。
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