© PCE Instruments
25
Eng
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3.2.1
Toxic gases and oxygen
Gas type
Item no.
Rel. density
(air = 1)
Recommended
distance to ceiling or
from floor
Ammonia
PCE-FGD-NH3
0.59
0.3 m to ceiling
Chlorine
PCE-FGD-CL
2.40
0.2 … 0.3 m from floor
Hydrogen chloride
PCE-FGD-HCL
1.27
0.2 … 0.3 m from floor
Hydrogen cyanide
PCE-FGD-HCN
0.93
0.3 m to ceiling
Ethylene
PCE-FGD-C2H4-TOX
0.97
1.5 … 1.8 m from floor
Ethylene oxide
PCE-FGD-C2H4O
1.57
0.2 … 0.3 m from floor
Formaldehyde
PCE-FGD-CH2O
1.09
0.2 … 0.8 m from floor
Carbon dioxide
PCE-FGD-CO2
1.53
0.6 … 0.8 m from floor
Carbon monoxide
PCE-FGD-CO
0.97
0.2 … 0.3 m from floor
Ozone
PCE-FGD-O3
1.66
1.5 … 1.8 m from floor
Oxygen
PCE-FGD-O2
1.10
1.5 … 1.8 m from floor
Sulphur dioxide
PCE-FGD-SO2
2.26
0.3 m from floor
Nitrogen dioxide
PCE-FGD-NO2
1.59
0.2 … 0.3 m from floor
Chart: Mounting height of the sensors
3.2.2
Refrigerant gases / F-gases
Freon
group
Gas
type
Item no.
Rel. density
(air = 1)
Recommended distance
to ceiling or from floor
FR02
R23
PCE-FGD-R23
2.4
0.3 m from floor
FR03
R1234yf
PCE-FGD-R1234YF
4
0.3 m from floor
FR04
R123
PCE-FGD-R134
>1
0.3 m from floor
FR06
R22
PCE-FGD-R22
3
0.3 m from floor
FR07
R134a
PCE-FGD-R134A
>1
0.5 m
from floor
FR08
R407c
PCE-FGD-R407C
>1
0.3 m from floor
Chart: Mounting height of the sensors
Summary of Contents for PCE-FGD Series
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