US 12,281,947 B2
Multipoint series sensor in electric heating elements
Xin Liu, St. Louis, MO (US); and Eric Ludwig, St. Louis, MO (US)
Assigned to Watlow Electric Manufacturing Company, St. Louis, MO (US)
Filed by WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US)
Filed on Jul. 27, 2021, as Appl. No. 17/443,609.
Claims priority of provisional application 63/056,850, filed on Jul. 27, 2020.
Prior Publication US 2022/0026285 A1, Jan. 27, 2022
Int. Cl. G01K 7/16 (2006.01); G01K 7/02 (2021.01); G01K 15/00 (2006.01)
CPC G01K 7/16 (2013.01) [G01K 15/007 (2013.01); G01K 7/02 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A temperature sensing system comprising:
a plurality of resistive segments extending from a first end to a second end and connected in electrical series, each resistive segment defining a material different from a material of an adjacent resistive segment, and the plurality of resistive segments being joined at respective sensing junctions between the first end and the second end to define a plurality of sensing junctions along a length of the plurality of resistive segments, wherein each of the plurality of sensing junctions has a polarity that is inverse to an adjacent sensing junction of the plurality of sensing junctions;
wherein a temperature deviation is determined from the plurality of sensing junctions based on electric potential at each of the sensing junctions.