US 12,436,058 B2
Sniffer probe with shielding
Jochen Puchalla-König, Cologne (DE); Erik Rolff, Cologne (DE); and Silvio Decker, Cologne (DE)
Assigned to INFICON GMBH, Cologne (DE)
Appl. No. 17/795,167
Filed by INFICON GMBH, Cologne (DE)
PCT Filed Jan. 12, 2021, PCT No. PCT/EP2021/050430
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2021/156021, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10 2020 102 630.7 (DE), filed on Feb. 3, 2020.
Prior Publication US 2023/0080807 A1, Mar. 16, 2023
Int. Cl. G01M 3/16 (2006.01); G01M 3/20 (2006.01)
CPC G01M 3/16 (2013.01) [G01M 3/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A sniffer probe for drawing in gas, the sniffer probe having at least one sniffer tip provided with an intake opening which is connected via a connecting line to a main sniffer line which can be connected to a gas leak detector,
wherein, in a region of the intake opening, the sniffer tip is with flexible elongated shielding elements which project from the sniffer tip in such a way that the intake opening is shielded from an outer environment of the sniffer probe by means of the shielding elements forming flexible, gas permeable walls of a test cavity for a test object to be examined, wherein said test cavity adjoins the intake opening, wherein the sniffer tip and the shielding elements surround the test cavity essentially entirely and thereby shield the test cavity from the outer environment of the sniffer probe to all sides, and wherein the sniffer probe further comprises at least two separate arms between which the test cavity is formed, at least one of the arms having the intake opening on a side facing the test cavity.