Method and arrangement for detecting harmful substances

Details Method and arrangement for detecting harmful substances Method and arrangement for detecting harmful substances

2007-06-05

2007-06-05

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S287000, C250S286000, C250S282000, C250S281000, C250S424000, C250S435000

Reexamination Certificate

active

11219645

ABSTRACT:
A method and an arrangement detect harmful substances while eliminating or minimizing the drawbacks of an ion-mobility spectrometer (IMS). The sample gas flow is mixed with a reference gas utilizing a pump (7). A reaction gas is supplied via a metering unit (10) to the ion-mobility spectrometer (2) when complex ion-mobility spectrometer spectra are present. The measurement signals obtained as to the gas-quantity ratio between the sample gas and the reference gas are adapted to the original concentration and are then compared to previously defined and stored measured values via a signal height comparison or a pattern recognition. The measuring system is rinsed following the measurement phase by feeding the reference gas and is cleaned by metering an additional cleansing gas when harmful substances are detected which could not be rinsed away. Such methods and measuring systems are used for identifying harmful substances in ambient air.

REFERENCES:
patent: 2959677 (1960-11-01), Robinson et al.
patent: 3621240 (1971-11-01), Cohen et al.
patent: 3631436 (1971-12-01), Taguchi
patent: 3925183 (1975-12-01), Oswin et al.
patent: 4311669 (1982-01-01), Spangler
patent: 4551624 (1985-11-01), Spangler et al.
patent: 4987767 (1991-01-01), Corrigan et al.
patent: 6636811 (2003-10-01), Walte et al.
patent: 6946671 (2005-09-01), Smith et al.

Affiliated with

Also associated with

Rating

Method and arrangement for detecting harmful substances does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and arrangement for detecting harmful substances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and arrangement for detecting harmful substances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3875372