Thermometric measuring device and method

摘要

A temperature measuring instrument and method of temperature measurement based upon the use of highly oriented pyrolytic graphite as the active temperature sensitive material is used for measuring temperature changes over a wide range of temperatures. The highly oriented pyrolytic graphite is placed in a graphite tube in an environment within which a variation in temperature is to be measured, with the highly oriented pyrolytic graphite arranged in the graphite tube so that the orientation of its basal planes are aligned perpendicular to the longitudinal axis of the graphite tube. The physical displacement of the highly oriented pyrolytic graphite material is measured in a direction parallel to the longitudinal axis of the graphite tube and transverse to the orientation of its basal planes. This measurement is then converted into a scaled temperature reading corresponding to the variation in temperature.