The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1995
Filed:
Sep. 27, 1993
Jurgen Willner, Schwalbach, DE;
Kurt Steilen, Frankfurt am Main, DE;
Other;
Abstract
The invention relates to a process for calibrating a calorimetric flow indicator to a medium to be measured. The flow indicator has a sensor element that provides a temperature-dependent resistance and which heat up in a short period of time by means of electrical current heat. The resistance variation of the sensor element represents a measure of the flow velocity of a medium flowing by the sensor element. The calorimetric flow indicator is set for a specified medium other than the medium to be measured, with a resistance value Ro at a zero flow and a resistance value R.sub.max at a maximum flow, defining a preset range of measurement R.sub.max --Ro for the specified medium. To calibrate for the medium to be measured, a resistance value Rx of the sensor element at a zero flow of the medium to be measured is measured, the resistance value Ry of the sensor element at a maximum operating flow of the medium to be measured is measured, and a measuring range Ry--Rx, defined by the resistance values Rx and Ry, is automatically brought into coincidence with the preset measuring range R.sub.max --Ro by displacing and extending the measuring range in relation to the preset range.