Figaro TGS2610-C00 TGS 2610 Gas Sensor For LP Gases Alcohol, Methane, Propane, Iso-Butane (Ø x H) 9.2 mm x 7.8 mm TGS2610-C00 Data Sheet

4

TECHNICAL INFORMATION FOR TGS2610

2-1   Sensitivity to various gases

Figures 4a and 4b show the relative sensitivity of
TGS2610 to various gases.  The Y-axis shows the ratio
of the sensor resistance in various gases (Rs) to the
sensor resistance in 1800ppm of iso-butane (Ro).

For TGS2610-C, the sensitivity to ethanol, which may
act as an interference gas, is lower compared with
that of iso-butane/propane. However, TGS2610-D
shows significantly less sensitivity to alcohol than
TGS2610-C while showing no significant difference
in sensitivity to iso-butane/propane.

Using the basic measuring circuit illustrated in Fig. 2,
and with a matched R

L

 value equivalent to the Rs value

in 1800ppm of iso-butane, will provide the sensor
output voltage (V

RL

) change as shown in Figure 5.

:

All sensor characteristics in this technical brochure
represent typical sensor characteristics.  Since the Rs
or output voltage curve varies from sensor to sensor,
calibration is required for each sensor (for additional
information on calibration, please refer to the Technical
Advisory ‘Technical Information on Usage of TGS Sensors
for Toxic and Explosive Gas Leak Detectors’).

0.1

1

10

100

100

1000

10000

100000

Rs/Ro

Gas concentration (ppm)

Air

Ethanol

Hydrogen

Methane

Iso-butane/Propane

0

1

2

3

4

0

2000

4000

6000

8000

10000

12000

VRL (v)

Gas concentration (ppm)

Air

Ethanol

Iso-butane/

Propane

Methane

Hydrogen

Fig. 4a - TGS2610-C00 sensitivity to various gases (Rs/Ro)

Fig. 5 - Sensitivity to various gases (V

RL

)

0.1

1

10

100

100

1000

10000

100000

Rs/Ro

Gas concentration (ppm)

Air

Ethanol

Hydrogen
Methane

Iso-butane
Propane

Fig. 4b - TGS2610-D00 sensitivity to various gases (Rs/Ro)