500 sccm
200 sccm
Flow rate
Pure
Nitrogen
CO2
1028 ppm
200 sccm

TGS 4161 Figaro- co2

Range: 350 ppm -10000ppm

Atmospheric concentration: 350-400 ppm

Calibrated range: 350-900 ppm

PPM is inversely proportional to o/p voltage

Emf’s at 350 ppm is consistent (Column B)


Transition from synthetic air to 350 ppm is
consistent.(Column E)
But, transition from base value of 350 ppm to
test gas concentration is not the values that
we are looking for.(Column G) the value’s
should have slightly higher as per data sheet.
Note: The maximum change in emf that we noticed is around
12 mv. These should have been little bit higher as per data
sheet.
14
12
10
8
6
Series1
4
2
0
0
100
200
300
400
500
X-axis
Y-axis
600
Δ PPM
Δ EMF
THANK YOU