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technical article
Knowledge of bimetal thermometers
2011-8-27 14:47:14

    

的使用中, 双金属温度计 主要的元件是一个用两种或 多种金属片叠压在一起组成的多层金属片。 In industrial use, the main component of a bimetal thermometer is a multilayer metal sheet composed of two or more metal sheets laminated together. 将金属片制成螺旋卷形状 ,是 提高测温灵敏度,各层金属膨胀或 收缩量 由于在 多层金属片的温度改变 侯各不相同 ,使得螺旋卷卷起或 松开。 Generally, the metal sheet is made into a spiral shape to increase the temperature measurement sensitivity. The expansion or contraction of each layer of metal is different when the temperature of the multilayer metal sheet changes . release. 螺旋卷的一端 固定 而另一端可以和自由转动的指针相连, 所以 当双金属片感受到温度变化时,指针即可在圆形分度标尺上指示出温度来。 Because one end of the spiral coil is fixed , and the other end can be connected to a freely rotating pointer, when the bimetallic piece experiences a temperature change, the pointer can indicate the temperature on the circular graduation scale. 仪表的测温范围 一般 是200 - 650℃,允许 误差均为标尺两程的1%左右。 The temperature measurement range of bimetal thermometers is generally 200-650 ° C. The allowable error is about 1% of the two strokes of the scale. 温度计 和棒状的玻璃液体温度计的用途相似, 不同的是 可使用在机械强度要求更高的条件下。 Bimetal thermometers are similar to rod-shaped glass liquid thermometers in that they can be used under conditions that require higher mechanical strength. 是一种适合测量中低温的现场检测仪表,可 直接 用来 测量气体、液体和蒸汽的温度 该温度计从设计原理及结构上具有 以下等优点:( 1) 防水 2) 防腐蚀 3) 耐震动 4) 直观 5) 易读数 6) 无汞害 7) 坚固耐用。 WSS series bimetal thermometer is a kind of on-site detection instrument suitable for measuring low and medium temperature. It can be directly used to measure the temperature of gas, liquid and steam . The thermometer has the following advantages from the design principle and structure : ) Anti-corrosion ( 3) Vibration resistance ( 4) Intuitive ( 5) Easy to read ( 6) Mercury-free ( 7) Rugged and durable. 石油、化工、机械、船舶、发电、纺织、印染等工业和科研部门 广泛应用着 It is widely used in petroleum and chemical industry, machinery, shipbuilding, power generation, textile, printing and dyeing industries and scientific research departments .
    
的使用和维护: Use and maintenance of bimetal thermometers :

应尽量避免碰撞保护管,一定不能使保护管弯曲、变形。 1. During storage, installation, use and transportation, the WSS series bimetal thermometer should avoid collision with the protection tube as much as possible, and must not bend or deform the protection tube. During installation, it is strictly forbidden to twist the meter case.

仪表应在- 80 ℃~ +500℃的环境温度内正常工作。 2. The bimetal thermometer should work normally in the ambient temperature of -80 ℃ ~ + 500 ℃.

仪表经常工作的温度最好能在刻度范围的1/2~3/4处。 3. The temperature at which bimetal thermometers often work is preferably between 1/2 and 3/4 of the scale range.