(19)
(11)EP 4 234 407 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
06.09.2023 Bulletin 2023/36

(43)Date of publication A2:
30.08.2023 Bulletin 2023/35

(21)Application number: 23173247.0

(22)Date of filing:  05.07.2019
(51)International Patent Classification (IPC): 
G01N 21/552(2014.01)
G01N 21/94(2006.01)
B64D 13/06(2006.01)
G01N 21/77(2006.01)
(52)Cooperative Patent Classification (CPC):
G01N 21/7703; B64D 13/06; G01N 2021/7716; G01N 21/552; G01N 21/94; G01N 2021/7763
(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: 06.07.2018 US 201816028999

(62)Application number of the earlier application in accordance with Art. 76 EPC:
19184662.5 / 3591384

(71)Applicant: Hamilton Sundstrand Corporation
Charlotte, NC 28217-4578 (US)

(72)Inventors:
  • KARRA, Jagadeswara Reddy
    Ellington, CT 06029 (US)
  • DARDAS, Zissis A.
    Worcester, MA 01602 (US)
  • HARRIS, Peter R.
    Jupiter, FL 33458 (US)

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

  


(54)AIRCRAFT AIR SUPPLY AND CONTAMINANT DETECTION SYSTEM


(57) A method of testing for tricresyl phosphate, comprising: directing light from a light source to a light detector; contacting a test gas with a metal organic framework on an exterior surface of an optical guide in communication with the light between the light source and the light detector; detecting a change in light intensity or spectral properties of light received by the light detector caused by adsorption of tricresyl phosphate by the metal organic framework







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