发布时间:2025-01-31 00:27:20
压力式温度控制器是早期的产品,优点是不需要电源,多用于防爆场合。探头是一个密封的容器,当温度改变时候。管道内的气体会膨胀或压缩产生压力,表头用一个弯曲的波纹管,就象有种玩具,一吹就伸直,不吹就弯曲带动指针就能显示温度了
压力控制器也是管道内压力变化带动一个机械开关,达到压力就打开或关闭开关,因此,要判断可在一定压力下调节设定压力看到规定附近压力有没有动作,有就是好的
二手房69平现在装修砸墙铲厨房厕所瓷砖包垃圾清走3900元贵吗
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