Applications of Machine Olfaction - The Electronic Nose Artificial Olfaction Technology - page 226

Table 8.10 TGS sensor details: adapted from sensor ( www.figarosensor.com )

Gas type Sensor types Range of sensor

Combustible gases
LP-gas/propane

TGS813,
TGS2610, TGS6810

(500-10,000 ppm)

Natural gas/methane TGS842,

TGS2611, TGS6810

(500-10,000 ppm)

General combustible gas TGS813, TGS2610 (500-10,000 ppm)

Hydrogen TGS821, TGS6812 (50-1,000 ppm)

Toxic gases
Carbon monoxide TGS2442, TGS5042 (50-1,000 ppm)

Ammonia TGS826, TGS2444 (30-300 ppm)

Hydrogen sulfide TGS825 (5-100 ppm)

Combustible/toxic gas
Methane

TGS3870 500-12,500 ppm

50-1,000 ppm Carbon monoxide

Organic solvents
Alcohol, toluene, xylene & TGS822, TGS2620 (50-5,000 ppm)

Other volatile organic vapors
CFCs (HCFCs and HFCs)- halocarbon
R-22, R-113 TGS830 (100-3,000 ppm)

R-21-R-22 TGS831 (100-3,000 ppm)

R-134a,R-22 TGS832 (100-3,000 ppm)

Other refrigerant gases TGS83x

series,TGS2630

-

Indoor pollutants
Carbon dioxide TGS4161, TGS4160 350-10,000 ppm

Air contaminants TGS800,

TGS2600, TGS2602

(\10 ppm)

Automobile ventilation
Gasoline exhaust, gasoline and diesel exhaust TGS2104, TGS2201 0.1-10 ppm(NO)

10-1,000 ppm
(CO, H 2 ,HC)

Cooking vapors
Volatile vapors from food (alcohol), water
vapors from food

TGS880, TGS883T -

sensor output amplitude is decided, which is marked as reference line. Sensor
output amplitude is directly proportional to the intensity of nitrogen oxide (NO) in
the breath sample.

8.1.10.4 Conclusion

The portable device that can detect the variety of diseases associated with the
human breath can be designed by escalating the present prototype. We want to
develop the prototype E-nose which works easily for diagnosis of disease and is