US 11,740,152 B2
Method and system for detecting and diagnosing fluid line leakage for industrial systems
Robert E. Johnston, St. Louis, MO (US); Daniel Gander, St. Louis, MO (US); Chelsea Hogard, St. Louis, MO (US); Miranda Pizzella, St. Louis, MO (US); and Andrew D. Selvy, 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 Jan. 19, 2022, as Appl. No. 17/578,975.
Claims priority of provisional application 63/138,883, filed on Jan. 19, 2021.
Prior Publication US 2022/0228942 A1, Jul. 21, 2022
Int. Cl. G01M 3/18 (2006.01); G01M 3/00 (2006.01); G01M 3/28 (2006.01)
CPC G01M 3/002 (2013.01) [G01M 3/18 (2013.01); G01M 3/2815 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method of detecting a leak-induced abnormal condition in a fluid line system having a plurality of heaters, the method comprising:
determining a plurality of temperature characteristics at a plurality of locations of the fluid line system, wherein each temperature characteristic from among the plurality of temperature characteristics is associated with at least one heater from among the plurality of heaters;
monitoring, for each of the plurality of heaters, an electrical characteristic of the heater;
determining the leak-induced abnormal condition is present within the fluid line system in response to the electrical characteristic of a given heater from among the plurality of heaters and the temperature characteristic associated with the given heater satisfying a temperature-and-electrical characteristics (TEC) deviation condition; and
performing a corrective action in response to determining the leak-induced abnormal condition is present.