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已经发展了一种工作温度高达1950°F的新型的圆箔热流计。它的最重要的特点是在高温时,保持了高的灵敏度,而一般传统的康铜箔·铜热流计,在高温时灵敏度将下降30％以上。此外,由于使用了低导热率的圆箔,较高的热电功率输出,改进了时间常数,使其灵敏度获得了成倍的增长。热流计组件的全焊接结构,使它能适应在任何一种金属材料中工作。这些特点,除了高温灵敏度以外,也可以从其他一些标准热电偶如镍铬箔·康铜中获得。文中列出了标准热电偶材料的一些性能数据,并与新型的圆箔热流计在不同温度时的灵敏度作了对比。
A new type of foil heat flow meter has been developed that operates at temperatures up to 1950 ° F. Its most important feature is its high sensitivity at high temperatures, which, in contrast to conventional copper foil and copper heat flow meters, can reduce sensitivity by more than 30% at high temperatures. In addition, due to the use of a low thermal conductivity of the round foil, a higher thermal power output, improved time constant, resulting in a doubling of the sensitivity of the growth. The all-welded construction of the heat flow meter assembly allows it to work in any metal material. These features, in addition to the high temperature sensitivity, can also be obtained from some other standard thermocouples, such as nickel chrome foil, The paper lists some performance data for standard thermocouple materials and compares them with the sensitivity of the new foil thermal flowmeter at different temperatures.