(19)
(11) EP 3 627 157 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
29.04.2020 Bulletin 2020/18

(43) Date of publication:
25.03.2020 Bulletin 2020/13

(21) Application number: 19207401.1

(22) Date of filing: 29.01.2018
(51) International Patent Classification (IPC): 
G01P 5/165(2006.01)
G01P 21/02(2006.01)
G01K 15/00(2006.01)
H05B 3/48(2006.01)
G01P 13/02(2006.01)
G01K 13/02(2006.01)
H05B 3/56(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 24.03.2017 US 201715468829

(62) Application number of the earlier application in accordance with Art. 76 EPC:
18153825.7 / 3379262

(71) Applicant: ROSEMOUNT AEROSPACE INC.
Burnsville, MN 55306-4898 (US)

(72) Inventors:
  • ESSAWY, Magdi
    Lakeville, MN 55044 (US)
  • FOK, Ben
    Rosemount, MN 55068 (US)

(74) Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

 
Remarks:
This application was filed on 06-11-2019 as a divisional application to the application mentioned under INID code 62.
 


(54) PROBE HEATER REMAINING USEFUL LIFE DETERMINATION


(57) A probe system includes a heater (14) and a control circuit (16). The heater includes a resistive heating element routed through the probe system. An operational voltage is provided to the resistive heating element to provide heating for the probe system. The control circuit is configured to provide the operational voltage and monitor a capacitance between the resistive heating element and a metallic sheath of the heater over time. The control circuit is further configured to determine a remaining useful life of the probe system based on the capacitance.