An innovative Pirani pressure sensor

被引:0
|
作者
Chou, BCS
Shie, JS
机构
关键词
Pirani vacuum sensor; high pressure measurement; shallow gap;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A conventional Pirani vacuum sensor is converted into a device able to measure high gas pressure. By referring to infinite pressure, heat-loss change from the reference to a measured pressure induces electrical signal on the resistive sensor. 0.3 mu m shallow gap is formed for the floating microsensors to increase its sensitivity. This results ire a measurable range from 10(5) down to 10(-1) Torr. The thermal microsensor differs from the piezoresistive or capacitive type in sensing mechanisms. It also has advantages in smaller size and simpler structure.
引用
收藏
页码:1465 / 1468
页数:4
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