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Revised 08/04 1 TECHNICAL INFORMATION FOR TGS2600 Technical Information for Air Quality Control Sensors The Figaro 2600 series is a new type thick film metal oxide semiconductor, screen printed gas sensor which offers miniaturization and lower power consumption. The TGS2600 displays high selectivity and sensitivity to low concentrations of various air contaminants such as those found in cigarette smoke. Page Specifications Features2 Applications2 Structure2 Basic measuring circuit2 Circuit operating conditions3 Specifications3 Dimensions3 Basic Sensitivity Characteristics Sensitivity to various gases4 Temperature and humidity dependency5-6 Heater voltage dependency6 Gas response7 Initial action8 Long term characteristics8-9 See also Technical Brochure ‘Technical Information on Usage of TGS Sensors for Toxic and Explosive Gas Leak Detectors’. a n I S O 9 0 0 1 c o m p a n y IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET GASES ARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO. Revised 08/04 2 TECHNICAL INFORMATION FOR TGS2600 1. Specifications 1-1 Features * High selectivity to low gas concentrations * Low power consumption * Small size * Long life 1-2 Applications * Air cleaners for indoor air cleaners * Air cleaners for vehicles * Air quality monitors 1-3 Structure Figure 1 shows the structure of TGS2600. Using thick film techniques, the sensor material is printed on electrodes (noble metal) which have been printed onto an alumina substrate. The main sensing material of the sensor element is tin dioxide (SnO2). One electrode is connected to pin No.2 and the other is connected to