Patent · US Active

Method and device for the identification of gases

US9753012B2 · kind B2 · utility

0Cited by

4References

7Claims

0Family size

Assignee

Airsense Analytics GmbH · DE

Inventors

Andreas Walte · Schwerin, DE
Wolf Muenchmeyer · Wittingen, DE
Bert Ungethuem · Schwerin, DE

Key dates

Filing date	Jun 17, 2016
Grant date	Sep 5, 2017
Priority date	—
Expiry date	Jun 17, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH01J49/0027
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Method and device for identifying gases and/or ion mobility spectrometer and method for offsetting residual humidity are provided. The object of the invention is to develop a generic method for offsetting residual humidity in an ion mobility spectrometer and a related device, which has a simple structure and which fully exploits the reduced diffusion. This is achieved by a variable drift chamber drift gas velocity, which leads to differing penetration depths of the humidity into the drift chamber, and thus to variable residual humidities in the drift chamber. Methods of this type and the associated devices for detecting and identifying gases are used to recognise and identify chemical compounds, in particular explosive materials or material compounds and/or those which are damaging to health, and which must be identified in very low concentrations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.