|
|
Below some ( Ex = Flammable gases and Tox = Toxic
gases )
listed and connected to an sensor type applicable for its control.
|
Gas
|
Formula
|
LEL
%
|
Ex
|
Tox
|
TWA
8h
ppm
|
STEL
15min.
ppm
|
Sensor
Type
|
Ammonia
|
NH3
|
16,0
|
X
|
X
|
20
|
50
|
SX-482
|
Acetylene
|
C2H2
|
2,4
|
X
|
-----
|
-----
|
-----
|
SX-402
|
Ethanol
|
C2H6O |
3,3
|
X
|
X
|
1000
|
1300
|
SX-917
|
Ethylene
|
C2H4 |
2,7
|
X
|
-----
|
----- |
----- |
SX-912
|
Oxygen
|
O2 |
-----
|
----
|
-----
|
----- |
----- |
SX-200/O2
|
Carbon Dioxide
|
CO2 |
-----
|
---- |
X
|
5000 |
----- |
SX-303DM,
GC
|
Hydrocarbons
|
CxHy |
Variable
values
|
SX-917
|
Carbon Monoxide
|
CO
|
12,5
|
X
|
X
|
30 |
75 |
SX-213
|
Air Quality
|
Different gases
|
Variable
values
|
SX-422i
|
Chlorine
|
Cl2 |
-----
|
----
|
X
|
0,5 |
1,0 |
SX-200/Cl2
|
Hydrogen Chloride
|
HCl
|
-----
|
----
|
X
|
----- |
5,0
|
SX-200/HCl
|
Methane
|
CH4 |
5,0
|
X
|
-----
|
----- |
----- |
SX-917, GAM-5/cat
|
Propane
|
C3H8 |
2,2
|
X
|
X
|
800 |
1100 |
SX-917, GAM-5/cat
|
Exhaust fumes
|
Different gases
|
-----
|
----
|
X
|
----- |
----- |
SX-422p
|
Sulphur Dioxide
|
SO2 |
-----
|
----
|
X
|
1,0 |
4,0 |
SX-200/SO2
|
Hydrogen Sulphide
|
H2S |
4,3 |
X
|
X
|
10 |
15 |
SX-200/H2S
|
R-refrigerants
|
R134a,R505 jne...
|
-----
|
----
|
-----
|
----- |
----- |
SX-452,462, GAM-5
|
Styrene
|
C8H8
|
1,1
|
----
|
X
|
20 |
100 |
SX-402
|
Toluene ( solvents )
|
C7H8 |
1,2
|
X
|
X
|
50 |
100 |
SX-402
|
Nitrogen Dioxide
|
NO2 |
-----
|
----
|
X
|
3,0 |
6,0 |
SX-200/NO2
|
Nitric Oxide
|
NO
|
-----
|
----
|
X
|
25 |
----- |
SX-200/NO
|
Hydrogen
|
H2 |
4,0
|
X
|
-----
|
----- |
----- |
SX-917, SX-200/H2 |
|
|
|
