PRODUCT INFORMATION

Applications:

Features:

and Carbon Monoxide

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:

Rs = Sensor resistance in displayed gases at

various concentrations

Ro = Sensor resistance in 3000ppm of methane

* Combination methane and carbon monoxide

detectors

TGS 3870-B00 is a micro-bead type semiconductor gas sensor for the detection

of both methane and carbon monoxide. Using a micro-bead gas sensing

structure, both methane and carbon monoxide can be detected with a single

sensor element by periodic application of two different heater voltages (high

and low). Miniaturization of the gas sensing bead results in a heater power

consumption of only 38mW (average).

TGS 3870-B00 has low sensitivity to alcohol vapors (a typical interference gas

in the residential environment) and has high durability, making the sensor ideal

for consumer market gas alarms.

* Miniature size and low power consumption

* High sensitivity and selectivity to both

methane and carbon monoxide (CO)

* Low sensitivity to alcohol vapor

* Long life and low cost

Sensitivity Characteristics (methane):

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:

Rs = Sensor resistance in displayed gases at

various concentrations

Ro = Sensor resistance in 100ppm of CO

Sensitivity Characteristics (CO):

0.1

1

10

100

10

100

1000

10000

Methane

Hydrogen

CO

Air

Rs/Ro

Gas concentration (ppm)

0.1

1

10

100

1000

10

100

1000

10000

100000

Methane

Hydrogen

CO

Air

Rs/Ro

Gas concentration (ppm)

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.