FIGARO
PRODUCT INFORMATION
Applications:
Features:
TGS 3870 - for the detection of both Methane
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 is Figaro's new metal oxide 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 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):
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.
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)