Process and arrangement for determining at least one component of a test gas

US5093269A · kind A · utility

Assignee

• DRAGERWERK AKTIEGESELLSCHAFT · DE

Inventors

• Kurt Leichnitz · Erkrath, DE
• Hans Matthiessen · Bad Schwartau, DE

Key dates

• Filing date: Nov 3, 1987
• Grant date: Mar 3, 1992
• Expiry date: Nov 3, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/255
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A process for determination of one component of very low concentration in a test gas, which is guided in a supply line for concentration of the component across a sample collector, whose amassed quantity of samples is relinquished to a detection sensor. The arrangement makes available a measurement signal even during the collection of the sample. It also makes even the individual components of a multicomponent test gas detectable and a component-specific cross sensitivity of the detection sensor controllable. For this, the following process steps are provided: the test gas is first guided across the detection sensor 3 and then across the multistaged sample collector 7 having arrangements for separation of the several components; then after interruption of the supply of test gas, each individual stage 4, 5 and 6 separately relinquishes its separated component to the detection sensor 3.