Figaro TGS2600-B00 TGS 2600 Gas Sensor For Air Quality Various gases, air pollution (Ø x H) 9.2 mm x 7.8 mm TGS2600-B00 Scheda Tecnica
Codici prodotto
TGS2600-B00
Revised 08/04
8
TECHNICAL INFORMATION FOR TGS2600
2-5 Initial action
Figure 14 shows the initial action of the sensor
resistance (Rs) for a sensor which is stored unenergiz-
ed in normal air for 30 days and then energized in
clean air. The Y-axis represents sensor resistance in
clean air at various times after energizing (Rs) com-
pared with sensor resistance 20 min. after energizing
(Ro).
resistance (Rs) for a sensor which is stored unenergiz-
ed in normal air for 30 days and then energized in
clean air. The Y-axis represents sensor resistance in
clean air at various times after energizing (Rs) com-
pared with sensor resistance 20 min. after energizing
(Ro).
The Rs drops sharply for the first seconds after
energizing, regardless of the presence of gases, and
then reaches a stable level according to the ambient
atmosphere. Such behavior during the warm-up
process is called “Initial Action”.
energizing, regardless of the presence of gases, and
then reaches a stable level according to the ambient
atmosphere. Such behavior during the warm-up
process is called “Initial Action”.
Since this ‘initial action’ may cause an air cleaner to
activate unnecessarily during the initial moments
after powering on, it is recommended that an initial
delay circuit be incorporated into the device’s design
(refer to ...).
activate unnecessarily during the initial moments
after powering on, it is recommended that an initial
delay circuit be incorporated into the device’s design
(refer to ...).
2-6 Long-term characteristics
Figures 15 - 18 show the long-term stability of
TGS2600 as measured for more than 400 days. In
Figures 15 & 16, the sensor is first energized in normal
air. Measurement for confirming sensor character-
istics is conducted under standard test conditions.
Figure 15 depicts sensor resistance in clean air over
the test period, while in Figure 16 the Y-axis shows
the ratio of sensor resistance in gases (Rs) compared
with sensor resistance in fresh air on the same day
(Ro).
TGS2600 as measured for more than 400 days. In
Figures 15 & 16, the sensor is first energized in normal
air. Measurement for confirming sensor character-
istics is conducted under standard test conditions.
Figure 15 depicts sensor resistance in clean air over
the test period, while in Figure 16 the Y-axis shows
the ratio of sensor resistance in gases (Rs) compared
with sensor resistance in fresh air on the same day
(Ro).
Fig. 15 - Long-term stability (continuous energizing)
in clean air
Fig. 16 - Long term stability (continuous energizing)
in various gases
1
10
100
0
100
200
300
400
500
Rs (k
Ω
)
Elapsed time (days)
0.1
1
10
0
100
200
300
400
500
Hydrogen 3ppm
Hydrogen 10ppm
Ethanol 50ppm
Hydrogen 10ppm
Ethanol 50ppm
Rs/Ro
Elapsed time (days)
0
0.1
1
10
0
5
10
15
20
Rs/Ro
Time (min.)
Fig. 14 - Initial action