Device for measuring chemical and physical parameters of a liquid or gaseous medium

US5128019A · kind A · utility

Assignee

• AVL Medical Instruments · CH

Inventors

• Hellfried Karpf · Graz, AT
• Helmut Offenbacher · Graz, AT
• Erich Kleinhappl · Graz, AT
• Hermann Marsoner · St. Johann in Tirol, AT
• Ewald Jobstl · Graz, AT

Key dates

• Filing date: Nov 16, 1989
• Grant date: Jul 7, 1992
• Expiry date: Nov 16, 2009

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/251
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In order to reduce the measuring volume in a device for measuring chemical and physical parameters of liquid or gaseous media by means of optical sensor elements whose optodes may be replaced easily, a measuring unit with a sample channel is provided which may be inserted into a supporting frame of the device and which may be connected to ingoing and outgoing sample lines via capillary bores. The measuring unit contains a sensor carrier forming the boundary of the sample channel on one side, which sensor carrier has bores holding the optodes. The indicator film of each individual optode is situated in the plane of the sensor carrier facing the sample channel.