Apparatus for measuring the velocity of gases

US4245502A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Kurt Eiermann · Pfungstadt, DE
• Franz Kolb · Offenburg, DE

Key dates

• Filing date: Feb 1, 1979
• Grant date: Jan 20, 1981
• Expiry date: Feb 1, 1999

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P5/12
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

There is provided an apparatus for the measurement of the velocity of gases, especially for the intake of internal combustion engines, consisting essentially of an electronic unit and a hot-wire anemometer, with two or more temperature dependent resistance with the highest possible temperature coefficients which together with two resistances are connected to form a bridge. The temperature dependent resistances are made of a thin metal coating which are placed on electrically insulating carriers.