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 TGS 2620 has high sensitivity to the vapors of organic solvents as well as other volatile vapors. It also has sensitivity to a variety of combustible gases such as carbon monoxide, making it a good general purpose sensor. Due to miniaturization of the sensing chip, TGS 2620 requires a heater current of only 42mA and the device is housed in a standard TO-5 package.
Sensors to determine the number of Alcohol Organic solvents in the air. This sensor is usually used to detect the vapor of the solution.
- Target Gas: Alcohol Organic solvents
- Output: Resistance
- Typical Detection Range: 50ppm - 5.000ppm
- Heater Voltage: 5 ± 0.2 (DC / AC)
- Circuit Voltage: 5 ± 0.2 (DC / AC)
- Power Consumption: 15mW £
- Sensor resistance: 1KW - 5kW (at 300ppm)