초록 ▼

Device for measuring the temperature of the material contained in a closed apparatus. Including a probe equipped with a sensitive thermocouple element mounted in a protective housing made of an electrically and thermally insulating material in contact with the material to be measured, the element is

Device for measuring the temperature of the material contained in a closed apparatus. Including a probe equipped with a sensitive thermocouple element mounted in a protective housing made of an electrically and thermally insulating material in contact with the material to be measured, the element is connected with a preamplification electronic circuit adjacent to it, and having an operational preamplifier connected with a couple of semiconductor switches and an integration circuit which probe is connected to means located at a distance from the apparatus for amplifying and processing the signal and associated with visualization, recording and control members.

대표청구항 ▼

An apparatus for measuring the temperature of materials in a closed environment, comprising: a probe including an elongated housing having a first end adapted to contact said material and a second end remote from said first end, a thermocouple constituted of two wires of metals having different ther

An apparatus for measuring the temperature of materials in a closed environment, comprising: a probe including an elongated housing having a first end adapted to contact said material and a second end remote from said first end, a thermocouple constituted of two wires of metals having different thermoelectric characteristics and connected together at one end to form a weld located at said first end, and an electrically and thermally insulating ceramic envelope receiving said wires and in which said weld is received at a short distance from a surface of said envelope at said first end in contact with said material, said envelope being constituted of a composition containing 60 to 70% zirconium oxide and 20 to 30% alumina and having a coefficient of thermal expansion close to that of said wires; an electronic preamplification circuit in a housing mounted on said second end of said probe, connected to said wires; and signal processing means remote from said probe and electrically connected to said preamplification circuit, said signal processing means including a remotely located amplifier and means for displaying an output from said probe.