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FIGARO

PRODUCT INFORMATION

TGS 2600 -

for the detection of Air Contaminants

Featur es: Applications:

* Low power consumption * High sensitivity to gaseous air contaminants * Long life and low cost * Uses simple electrical circuit * Small size * Air cleaners* Ventilation control * Air quality monitors

TGS 2600 has high sensitivity to low concentrations of gaseous aircontaminants such as hydrogen and carbon monoxide which exist in cigarette smoke. The sensor can detect hydrogen at a level of several ppm. Figaro also offers a microprocessor (FIC02667) which contains special software for han- dling the sensor's signal for appliance control applications.Due to miniaturization of the sensing chip, TGS 2600 requires a heater currentof only 42mA and the device is housed in a standard TO-5 package. The sensing element is comprised of a metal oxide semiconductor layer formed on an alumina substrate of a sensing chip together with an integrated heater. In the presence of a detectable gas, the sensor's conductivity increases depending on the gas concentration in the air. A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.The The figure below represents typical sensitivity characteristics,all data having been gathered at standard test conditions (see reverse side of this sheet). The Y-axis is indicated as sensorresistance ratio sensor resistance ratio (Rs/Ro), defined as follows:Rs = Sensor resistance in fresh airat various temperatures/humiditiesRo = Sensor resistance in fresh airat 20 (Rs/Ro) which is defined as follows:Rs = Sensor resistance in displayed gases atvarious concentrationsRo = Sensor resistance in fresh airThe figure below represents typical temperature and humiditydependency characteristics. Again, the Y-axis is indicated as ° C and 65% R.H. Sensitivity Characteristics: Temperature/Humidity Dependency:
e Iso-butaneEthanol Hydrogen Sensor Resistance Ratio (Rs/Ro) Sensor Resistance Ratio (Rs/Ro) 0.010.1110 110100 0.1 1 10 -20-1001020304050 Gas Concentration (ppm) AirMethaneCarbon monoxid Ambient Temperature (ËšC) R.H.35% 65%95% IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLYRECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET GASESARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HAS NOT BEENSPECIFICALLY TESTED BY FIGARO.