TGS 8100 - for the detection of Air Contaminants0 pages

PRODUCT INFORMATION

TGS 8100 - for the detection of Air Contaminants
Features:

Applications:

* Surface mount package
* Low power consumption
* High sensitivity to cigarette smoke, cooking
odors, and gaseous air contaminants
* Long life
* Low cost

* Indoor air quality monitors
* Air cleaners
* Ventialtion control
* Kitchen range hood control

The sensing element is comprised of a sensing chip and an integrated heater
formed on a silicon substrate using MEMS technology, and a metal-oxide
semiconductor layer formed on the sensing chip. The device is housed in a
surface-mount ceramic package. Due to miniaturization of the sensing chip,
TGS 8100 requires a heater power consumption of only 15mW, and is suitable
for low-power equipment and battery-operated instruments. 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.
The TGS 8100 has high sensitivity to low concentrations of gaseous air
contaminants such as cigarette smoke and cooking odors. By utilizing the
change ratio of sensor resistance from the resistance in clean air as relative
response, human perception of air contaminants can be simulated and practical
air quality control can be achieved.
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 sensor
resistance ratio (Rs/Ro) which is defined as follows:
t
Rs = Sensor resistance in displayed gases at t
tt
various concentrations
t
Ro = Sensor resistance in fresh air

The figure below represents typical temperature and humidity
dependency characteristics. Again, the Y-axis is indicated as
sensor resistance ratio (Rs/Ro), defined as follows:
t
Rs = Sensor resistance in fresh air
tt
at various temperatures/humidities
t
Ro = Sensor resistance in fresh air
tt
at 20°C and 65% R.H.

Sensitivity Characteristics:

Temperature/Humidity Dependency:

10

10

Air

1

Methane

100% R.H.

1
Rs/Ro

Iso-butane
Rs/Ro

CO

40% R.H.
65% R.H.
85% R.H.

Hydrogen

0.1

Ethanol

0.01

0.1
1

10

100

Gas concentration (ppm)

1000

-10

0

10
20
30
40
Ambient temperature (˚C)

50

60

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.