PRODUCT CATALOGUE 2
an ISO9001 company
FIGARO GAS SENSORS
2000 Series
Product List
The FIGARO 2000 Series comprises a new
type of thick film metal oxide semiconductor
gas sensor fabricated using a novel screen
printing technique. This Technique enables
narrow sensor to sensor variation within
production lots.
Additionally, Figaro's material technology has
expanded the range of sensing materials to
metal oxides other than the tin dioxide.
Gases which are oxidizing or have specific
odor properties can now be detected as well
as flammable gasses. Also, by having multi-
elements on one chip, FIGARO can provide
intelligent sensors with multiple output
signals.
*Under development
∗For equivalents, please refer to Product Catalogue 1
TGS 822
TGS 203
TGS 800
TGS 822
TGS 842
TGS 813
TGS 830
TGS 831
TGS 883
TGS 882
Application Target gas Type S1 Type S2 Type M1 Type D1 Equivalents
Combustible gas
detection
Toxic gas
detection
Automobile
ventilation control
Solvent vapor
detection
Air quality control
Cooking control
Odor detection
Butane
LP gas
TGS 2180
TGS 2100
TGS 2104
TGS 2106*
TGS 2201*
TGS 2442
TGS 2450*
TGS 2400*
TGS2610
TGS2611
TGS2670*
TGS2620
TGS 2600
TGS 2602*
Methane
Natural gas
Methane and
Carbon monoxide
Alcohol
Organic solvents
Carbon monoxide
Volatile sulfide
Water vapor
General air
contaminants
VOC
Gasoline exhaust
Diesel exhaust
2
Each sensor requires two voltage inputs. Heater voltage
(VH) is applied to an integrated heater to maintain the
sensing element at the required temperature. A circuit
voltage (VC) is applied to allow measurement of the
voltage (Vout) across a load resistor (RL) which is
connected in series with the sensor.
A common power supply circuit can be used for both VC
and VHto fulfill electrical requirements which are
specified for each type of sensor.
The value of RLcan be chosen to optimize the alarm
threshold value or output voltage range for signal
processing. The value of RLshould be chosen to keep
the power consumption of the metal oxide
semiconductor (PS) below a limit of 15 mW. The value of
PSwill be highest when the value of sensor resistance
(RS) is equal to RLon exposure to gas. The value of PSis
calculated using the following formula:
The sensor resistance (RS) is calculated with a measured
value of Vout from the following formula:
Product Code for FIGARO 2000 series
There are four types of sensor elements and four different configurations. The equivalent circuit for each type of sensor
is illustrated below in the basic measuring circuit with a special symbol and is represented by a sensor resistance (RS)
and a heater resistance (RH).
Sensor structure and packaging
Vout
(Vc–Vout)×
=
RsRL
Model TGS 21XX
Element type S1
Package type Plastic
Configuration : -Single sided, 1 element
Features : -Simple structure
Benefits : -Suitable for large volume and
low cost applications
Pin connection
1 : Sensor electrode(–)
2 : Common(+)
3 : Heater(–)
Circuit conditions
Vc: 5V±0.2V DC
VH: 5V±0.2V DC
RL: Variable(Ps 15mW)
<
=
,,
,,
,,
,,
,,,
,,,
,,,
,,,
,,,
,,,
,,
,,,
,,,
,,,
Electrode
Heater
Sensing material
Substrate
Lead wire
Lead frame
3.2mm
2.2mm
Stainless
steel gauze
Plastic cap
Lead frame
GAS
Vout
2
31
(+)
(–)
VH
VC
RL
(–)
ø12.0±0.5
11.52±0.2
4.7±0.2
0.8±0.1 2.54 2.54
0.25±0.05
123
Sensing
element
unit : mm
GAS SENSOR
RS
(Vc–Vout)2
=
Ps
Technology
1
2 Printed semiconductor
3
4 Solid state electrolyte
Element type
1S1
2S2
3
4M1
5
6D1
7
8
9
0
Target gas / Application
10~19 Combustible gasses
20~29 Organic solvent vapor
30~39 Halocarbon gasses
40~49 Toxic gasses
50~59 Volatile sulfide/amine odor
60~69 Other gasses
70~79 Multiple gasses
80~89 Cooking control
90~99
00~09 Air quality control
3
Model TGS 22XX
Element type S2
Package type Plastic
Model TGS 24XX
Element type M1
Package type Metal can
Model TGS 26XX
Element type D1
Package type Metal can
Configuration : -Single sided, 2 element
Features : -Dual elements on one chip
Benefits : -Two output signals for enhanced
information
-High selectivity
Pin connection
1 : Sensor electrode 1(–)
2 : Common(+)
3 : Sensor electrode 2(–)
4 : Heater(–)
Circuit conditions
Vc: 5V±0.2V DC
VH: 5V±0.2V DC
RL1 : Variable(Ps 15mW)
RL2 : Variable(Ps 15mW)
Configuration : -Multi-layer, 1 element
Features : -Pulsed heating
Benefits : -Low power consumption
-Battery back up
Pin connection
1 : Heater
2 : Sensor electrode (–)
3 : Sensor electrode (+)
4 : Heater
Circuit conditions
Vc: 5V±0.2V DC(Pluse drive)
VH: 5V±0.2V DC(Pluse drive)
RL: Variable( 10KΩ)
Note :Typical voltage
drop in Tr1 is 0.2V.
>
=
Configuration : -Double sided, 1 element
-Heater printed on
reverse side of chip
Features : -Small package
Benefits : -Low power consumption
Pin connection
1 : Heater
2 : Sensor electrode (–)
3 : Sensor electrode (+)
4 : Heater
Circuit conditions
Vc: 5V±0.2V DC
VH: 5V±0.2V DC/AC
RL: Variable(Ps 15mW)
<
=
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=
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=
,,
,,
,,
,,
,,
,,
,,
,,
,,
,,,
,,,
,,,
,,,
,,
,,,
,
,,
,,,
,
,,
,,
,,,,
,,,
,,,
,,
,,
,,,
,,,
,
,,
,,
,,
,,,
,,
,,
Electrode
Heater
Sensing material 1
Sensing material 2
Lead wire
Lead frame
3.2mm
2.2mm
Stainless
steel gauze
Plastic cap
Lead frame
Substrate
Electrode
Heater
Sensing material
(Multi-layer)
Lead wire
2.5mm
Non woven
fabric
Metal
cap
Lead pin
Substrate
2.5mm
Electrode
Heater
Sensing material
Lead wire
1.5mm
Stainless
steel gauze
Metal
cap
Lead pin
Substrate
1.5mm
(Reverse side)
GAS
Vout 1
2
31
(–)
VH
VC
RL1
(–)
Vout 2
RL2
GAS
Vout
2
3
1
VC, VH
RL
Pulse
Pulse 4
Tr1
Tr2
(+)
GAS
Vout
2
3
1
(+)
4
VH
VC
RL
(–)
ø14.5±0.5
12.5±0.2
4.2±0.2
0.8±0.1
2.54
2.54
2.54
0.25±0.05
123
Sensing
element
0.5
1.4
4
ø9.2±0.2
7.8±0.5
10.0±1.0
3.6±0.1
1
2
3
Sensing
element
4
3.6±0.1
ø8.1±0.2
ø0.55±0.05
ø5.1
90°
unit : mm
unit : mm
unit : mm
GAS
SENSOR
RSRSRH
GAS
SENSOR
RS
RH
GAS
SENSOR
RS
RH
Bottom view
ø9.2±0.2
ø8.1±0.2
ø0.3
5.9
0.2
1.5
Top View
ø6.0+0,-0.3
10.0±1.0
ø0.55±0.05
ø5.1±0.1
45˚
1
4
32
(+)
(–)
12.7±0.5
4
TGS 2610
100
10
1
0.1
Gas concentration (ppm)
R0: Rs at 1500ppm Carbon iso-Butane
Sensor resistance ratio (Rs/Ro)
TGS 2611
100
10
1
0.1
100 1000 10000 100000
Gas concentration (ppm)
R0: Rs at 4500ppm Methane
Sensor resistance ratio (Rs/Ro)
Air level
Ethanol
Hydrogen
iso-Butane
Methane
Air level
Ethanol
Hydrogen
Methane
iso-Butane
TGS 2620
100
10
1
0.1
0.01
10 100 1000 10000 100000
Gas concentration (ppm)
R0: Rs at 300ppm Ethanol
Sensor resistance ratio (Rs/Ro)
Air level
Ethanol
Hydrogen
iso-Butane
Methane
Cabon monoxide
TGS 2442
100
10
1
0.1
0.01 1 10 100 1000 10000
Gas concentration (ppm)
R0: Rs at 100ppm Carbon monoxide
Sensor resistance ratio (Rs/Ro)
TGS 2180
100
10
1
0.11 10 100 1000
Absolute humidity(g/m3)
R0: Rs in clean air at 20°C, 65%R.H.
Sensor resistance ratio (Rs/Ro)
100 1000 10000 100000
Air level Ethanol
Hydrogen
Cabon monoxide
Sensitivity characteristics
The sensitivity of the Figaro Gas Sensor is defined by the
relationship between gas concentration changes and
sensor resistance changes. This relationship is based on a
logarithmic function.
Sensitivity characteristics of Figaro sensors are shown in
the following figures. In these figures, the sensor resistance
values (Rs) are normalized according to the sensor
resistance at specified conditions (Ro) for each model, and
the Y-axis is indicated as sensor resistance ratio: Rs/Ro.
All the sensor characteristics in this catalogue represent
typical characteristics.
Combustible gas detection
Solvent vapor detection
Toxic gas detection
Cooking control
5
TGS 2100
10
1
0.1
0.01 1 10 100
Gas concentration (ppm)
R0: Rs in clean air
Sensor resistance ratio (Rs/Ro)
TGS2600
10
1
0.1
0.01 1 10 100
Gas concentration (ppm)
R0: Rs in clean air
Sensor resistance ratio (Rs/Ro)
Air level
Ethanol
Hydrogen
iso-Butane
Methane
Cabon monoxide
Air level
Ethanol
Hydrogen
Cabon monoxide
TGS 2104
10
1
0.1
0.01 1 10 100 1000
Gas concentration (ppm)
R0: Rs in clean air
Sensor resistance ratio (Rs/Ro)
Air level
Ethanol
Hydrogen
Cabon monoxide
TGS 2201*(Element for diesel exhaust)
100
10
1
0.10.01 0.1 1 10
Gas concentration (ppm)
R0: Rs in clean air
Sensor resistance ratio (Rs/Ro)
TGS 2201*(Element for gasoline exhaust)
10
1
0.1
0.011 10 100 1000
Gas concentration (ppm)
R0: Rs in clean air
Sensor resistance ratio (Rs/Ro)
Air level
Nitrogen dioxide Air level
Ethanol
Hydrogen
Cabon monoxide
While ethanol is not a component of gasoline exhaust,
its sensitivity curve is considered representative of
various uncombusted hydrocarbons.
Air quality control
Automobile ventilation control
*Under development
6
Specifications
1.Target gases & Standard Circuit conditions
The electrical characteristics in this table represent typical values and characteristics.
=
PSRS
(Vc–Vout)2*Under development
** VH is the voltage across the heater and a transister Tr1.
TGS2610
500ppm~10,000ppm
5V±0.2V(DC/AC)
5V
±
0.2
V(DC)
Variable 15mW
TGS2611
500ppm~10,000ppm
5V±0.2VV(DC/AC)
5V
±
0.2
V(DC)
Variable 15mW
TGS2620
50ppm~5,000ppm
5V±0.2VV(DC/AC)
5V
±
0.2
V(DC)
Variable 15mW
TGS2442
30ppm~1,000ppm
5V
±
0.2
V(
DC,Pulse
)
** 5V
±
0.2
V(
DC,Pulse
)
TGS2180 Water vapor 1g/m3
~
150g/m35V
±
0.2
V(DC)
5V
±
0.2
V(DC)
Variable 15mW
TGS2100 1ppm
~
30ppm 5V
±
0.2
V(DC)
5V
±
0.2
V(DC)
Variable 15mW
TGS2600 1ppm
~
30ppm
5V±0.2V(DC/AC)
5V
±
0.2
V(DC)
Variable 15mW
TGS2104 10ppm
~
100ppm 7V
±
0.35
V(DC)
15VDC Max Variable 15mW
TGS2201*
10ppm~100ppm
7V±0.35VDC 15VDC Max Variable 15mW
0.1ppm~1ppm
Target gases
Butane
LP gas
Methane
Natural gas
Alcohol
Organic solvents
Carbon
monoxide
General air
contaminants
General air
contaminants
Gasoline
exhaust
Gasoline
exhaust
Diesel exhaust
Typical detection
ranges
Sensor
power
consumption
Load
resistance
Circuit voltageHeater voltage
PSRL
Variable
( 10KΩ)
VCVH.
Model
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=
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=
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=
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=
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=
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=
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=
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=
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=
7
2.Electrical characteristics Standard test conditions : 20°C±2°C, 65%±5% R.H.
*Under development
TGS2610 57Ω56mA 280mW iso-Butane
TGS2611 57Ω56mA 280mW Methane
TGS2620 83Ω42mA 210mW Ethanol
TGS2442 17Ω
TGS2180 18Ω166mA 830mW
TGS2100 20Ω152mA 760mW
TGS2600 83Ω42mA 210mW
TGS2104 50Ω91mA 640mW
TGS2201*65Ω72mA 505mA
Heater
resistance
at room temp
RHIHPHRS
1KΩ
~
5KΩ
in 1,500ppm
0.681K
Ω
~
6.81K
Ω
in 5,000ppm
1K
Ω
~5K
Ω
in 300ppm
6.81K
Ω
~
68.1K
Ω
in 100ppm
14mW
(average)
203mA
(for 14msec)
23K
Ω
~
145K
Ω
in Air
7K
Ω
~65K
Ω
in Air
10K
Ω
~90K
Ω
in Air
10K
Ω
~80K
Ω
in Air
25K
Ω
in Air
250K
Ω
in Air
Heater current Heater power
consumption
Sensor
resistance
Resistance ratio
of sensor
RS(iso-C4H10 4,500ppm)
RS(iso-C4H10 1,500ppm)
=0.53±0.05
RS(CH49,000ppm)
RS(CH43,000ppm)
=0.60±0.06
RS(EtOH 300ppm)
RS(EtOH 50ppm)
=0.4±0.1
RS(CO 300ppm)
RS(CO 100ppm)
=0.23~0.49
RS(25°C68%R.H.)
RS(20°C68%R.H.)
=0.77~0.92
RS(H210ppm)
RS(Air)
=0.2~0.6
RS(H210ppm)
RS(Air)
=0.3~0.6
RS(H210ppm)
RS(Air)
=0.3~0.6
RS(10ppm of H2)
RS(Air)
=0.35
RS(0.3ppm of NO2)
RS(Air)
=2.5
Standard
test
gas
Carbon
monoxide
Air and
ethanol
Air and
hydrogen
Air and
hydrogen
Air and
hydrogen
Air and
hydrogen
Air and
nitrogen
dioxide
Model
PRINTED WITH
SOYINK
Trademark of American Soybean Association
T M
Signal processing technique for air quality sensors
Air quality control
Detection of low concentrations of
air pollution, eg. cigarette smoke,
cooking fumes, etc. is possible with
the combination of an air quality
sensor and exclusively designed
microprocessor 93619A.
The microprocessor calculates
the average value of the sensor
resistance in ambient air over a
certain period and renews the base
level. This reduces influence from
humidity, temperature and basic
environmental changes. This
method is effective for automatic
controls in ventilation systems by
detecting rapid changes in the
atmosphere from the base levels.
Figaro Engineering Inc. (Figaro) reserves the right
to make changes without notice to any products
herein to improve reliability, functioning or design.
Information contained in this document is believed
to be reliable. However, Figaro does not assume
any liability arising out of the application or use of
any product or circuit described herein; neither
does it convey any license under its patent rights,
nor the rights of others.
Figaro expressly disclaims any implied warranties
of merchantability, fitness for a particular purpose
or use, infringement in any affirmation of fact or
quality not contained herein.
Figaro's products are not authorized for use as
critical components in life support applications
where in a failure or malfunction of the products
may result in injury or loss of life.
LIMITED WARRANTY
Figaro Engineering Inc. warrants its products to be
free from defects in materials and workmanship for a
period of one (1) year from the date of the original
retail purchase of its products. Figaro will, at its
option, either repair or replace any products returned
to the factory which Figaro shall, upon inspection,
determine to be defective. The foregoing shall
constitute the sole remedy for any breach of Figaro's
warranty.
THERE ARE NO WARRANTIES WHICH EXTEND
BEYOND THE DESCRIPTION ON THE FACE
HEREOF.
Output signal changes
in polluted condutuons
Renewed base level
Initial base level
Base level
Control signal
Time
∆V
:Pre-set value for
switching threshold
∆V
∆V
∆V
∆V
∆V
On
Off
Output signal
Basic diagram for air quality control system
FIGARO GROUP Please contact
HEAD OFFICE
FIGARO ENGINEERING INC.
1-5-11 Senbanishi,
Mino, Osaka 562-8505, Japan
Tel. (81)727-28-2561
Fax. (81)727-28-0467
Email:figaro@figaro.co.jp
OVERSEAS
FIGARO USA, INC.
3703 West Lake Avenue, Suite 203
Glenview, IL 60025-1266, U.S.A.
Tel.(1)847-832-1701
Fax. (1)847-832-1705
Email:figarousa@figarosensor.com
www.figarosensor.com
