Cross-Sensitivity Data - Libelium Smart Cities PRO Technical Manual

5.10.2. Cross-sensitivity data

Hydrogen Sulfide
Nitric Dioxide
Chlorine
Nitric Oxide
Sulfur Dioxide
Carbon Monoxide
Hydrogen
Ethylene
Ammonia
Carbon Dioxide
Halothane
Figure: Cross-sensitivity data for the O
This sensor has a very high cross-sensitivity with NO
O and NO . A simple way to correct this effect is to subtract NO
3 2
gas sensor. The measure from the NO
section in the "Board configuration and programming" chapter to use the right function.
You can find a complete example code for reading the O
www.libelium.com/development/waspmote/examples/scp-v30-01-electrochemical-gas-sensors
Gas Formula
C
Halothane
Sensor
3
sensor must be accurate in order to subtract the right value. See the related
2
Concentration
(ppm)
H S 5
2
NO 5
2
Cl 5
2
NO 5
SO 5
2
CO 5
H 100
2
H 100
2 4
NH 20
3
CO 50000
2
100
gas. So, the output in ambients with NO
2
concentration from O
2
Sensor in the following link:
3
-55-
Output Signal
(ppm CO
equivalent)
< 100
70 to 120
< 30
< 3
< -6
< 0.1
<0.1
< 0.1
<0.1
0.1
< 0.1
will be a mix of
2
concentration with an NO
3
Sensors
2
v7.3