Patent ID: 9546953
Date: 2017-01-17
CPC Classifications: G01N

Claim:
1. A device for real-time analysis of chemical, biological and explosive substances in the air, the device comprising: a gas analysis sensor; a fluorescence/luminescence sensor; a sensor for determining a number and a size of particles; and an evaluation unit connected to receive an output of each of the gas analysis sensor, the fluorescence/luminescence sensor, and the sensor for determining the number and the size of particles; wherein: the gas analysis sensor, the fluorescence/luminescence sensor, and the sensor for determining the number and the size of particles are each operationally coupled with a multireflection cell as an open measuring path through which the chemical, biological and explosive substances flow in the air, the multireflection cell comprises a first minor arranged at a first longitudinal end of the multireflection cell and a second mirror arranged at a second longitudinal end of the multireflection cell, such that a laser beam is reflected a plurality of times between the first and second longitudinal ends of the multireflection cell to form a beam path, segments of the laser beam are formed between the first and second longitudinal ends of the multireflection cell, the segments of the laser beam substantially intersect in a central area of the multireflection cell, and the segments of the laser beam fan out toward the first and second longitudinal ends of the multireflection cell, and each of the gas analysis sensor, the fluorescence/luminescence sensor, and the sensor for determining the number and the size of particles performs measurements of signals from portions of the chemical, biological and explosive substances that are positioned at a same location along the beam path.