US 11,971,281 B2
Method for producing a probe of a thermal flowmeter, probe of a thermal flowmeter, and thermal flowmeter
Anastasios Badarlis, Birsfelden (CH); Stephan Gaberthüel, Oberwil (CH); Alexander Grün, Lörrach (DE); Hanno Schultheis, Lörrach (DE); Tobias Baur, Reinach (CH); Martin Barth, Riehen (CH); Martin Arnold, Reinach (CH); and Mathieu Habert, Rixheim (FR)
Assigned to Endress+Hauser Flowtec AG, Reinach (CH)
Appl. No. 17/603,140
Filed by Endress+Hauser Flowtec AG, Reinach (CH)
PCT Filed Mar. 31, 2020, PCT No. PCT/EP2020/059058
§ 371(c)(1), (2) Date Oct. 12, 2021,
PCT Pub. No. WO2020/212130, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 10 2019 110 312.6 (DE), filed on Apr. 18, 2019.
Prior Publication US 2022/0196450 A1, Jun. 23, 2022
Int. Cl. G01F 1/684 (2006.01); G01F 15/14 (2006.01)
CPC G01F 1/684 (2013.01) [G01F 15/14 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for producing a probe of a thermal flowmeter for measuring mass flow of a medium in a measuring tube, the method comprising:
providing a probe core disposed loosely in a probe sleeve having a longitudinal axis; and
deforming the probe sleeve completely radially relative to the longitudinal axis in the direction of the probe core using high energy rate forming such that a material-locking connection is formed between the probe sleeve and the probe core and a rod is produced,
wherein the rod defines a base body, or a separated section of the rod defines the base body, from which base body a probe is manufactured,
wherein a radial deformation speed of the high energy rate forming reaches values greater than 100 m/s, and wherein the high energy rate forming is performed using explosive forming,
and wherein the explosive forming comprises the steps of placing an explosive substance on an outside surface of the probe sleeve and igniting the explosive substance.