Abstract

Experiments investigating the use of thermistors for low pressure-measurements were carried out. It is shown that bead thermistors may be used only in the pressure range from 1 ÷ 10−3 mm Hg. On the contrary thermistor-systems consisting of bead thermistors fixed to thin metallic foils take advantage not only of the high temperature coefficient of thermistors but also of the low radiation emissivity and heat capacity of metals. These samples allow precise measurements down to 10−6 mm Hg.

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