Figaro TGS2602 Air Quality / VOC Sensor


The sensing element comprises a metal oxide semiconductor layer formed on the alumina substrate of a sensing chip together with an integrated heater. In the presence of detectable gas, sensor conductivity increases depending on 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.

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The TGS2602 has high sensitivity to low concentrations of odorous gases such as ammonia and H2S generated from waste materials in office and home environments. The sensor also has a high sensitivity to low concentrations of VOCs such as toluene emitted from wood finishing and construction products.
High sensitivity to VOCs and odorous gases
Low power consumption
High sensitivity to gaseous air contaminants
Long life
It uses a simple electrical circuit
Small size

Model No. TGS2602-B00
Heater Voltage 5.0±0.2V DC
Circuit Voltage 5.0±0.2V DC
Heater power consumption 280mW (typical)
Heater Current 56±5mA
Sensing Principle MOS type
Heater Resistance approx 59Ω at room temp. (typical)
Load Resistance variable 0.45kΩ min
Sensor Resistance 10kΩ ~ 100kΩ in air
Standard Package TO-5 metal can
Target Gases Air contaminants (VOCs, ammonia, H2S, etc.)
Test Gas Conditions normal air at 20±2˚C, 65±5%RH


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