Method and an apparatus for monitoring the subjection of individual people to harmful gases

US4384283A · kind A · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• Compur-Electronic GmbH · DE

Inventors

• Eckard Drope · Cologne, DE
• Karl P. Jansky · Münsing, DE
• Wilhelm Pross
• Wolfram Breuer · Leverkusen, DE

Key dates

• Filing date: May 29, 1980
• Grant date: May 17, 1983
• Expiry date: May 29, 2000

Classification

• Technology area (CPC G): Physics
• CPC primary: G08B21/182
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for monitoring the exposure of an individual person to toxic gases is carried out such that the gas concentration is continuously measured with a sensor for the specific gas, recorded and the measured values then read and evaluated. Instantaneous values of the concentration are periodically scanned, temporal mean values of the instanteous values are formed over a predetermined time interval, these mean values are stored and an alarm triggered if the instantaneous value and/or the mean value exceeds a predetermined critical value over the time interval or an integral multiple thereof.