| CPC G01N 25/20 (2013.01) [E21B 47/07 (2020.05); G01K 1/026 (2013.01); G01V 9/005 (2013.01); G01K 7/18 (2013.01); G01K 17/00 (2013.01); G01K 17/08 (2013.01); G01K 2213/00 (2013.01)] | 19 Claims |
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1. A thermal flux apparatus, forming a distributed temperature measurement system and comprising:
a plurality of temperature probe modules, each temperature probe module comprising:
a sensing element having an electrical resistance that varies with temperature;
at least two electrical switches; and
a logic circuit configured to control the electrical switches of the temperature probe module,
a data acquisition module comprising an analog-to-digital converter with an input electrically connectable to the plurality of temperature probe modules; and
an electrical network comprising between 6 and 8 wires connecting each temperature probe module with the data acquisition module;
wherein the at least two electrical switches of each temperature probe module are operable to connect the sensing element of said temperature probe module to the input of the analog-to-digital converter of the data acquisition module;
wherein the data acquisition module comprises a digital circuit electrically connected to, and configured to control, the logic circuit of each temperature probe module.
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