MSA PrimaX - Primax P List of Combustible Gases and Vapours Detectable with Catalytic Sensor P;N 10112716

Gas Sensor Interferant
0.1ppm PH
3
0.3ppm
20ppm SO
2
8ppm
Hydrogen Cyanide [HCN]
100ppm NO
-5ppm
10ppm NO
2
-7ppm
Hydrogen Sulphide [H
2
S]
100ppm Cl
2
-9ppm
100ppm NO
2
-21ppm
100ppm NO
1ppm
100ppm HCN
1ppm
100ppm SO
2
1ppm
Nitric oxide [NO]
20ppm HCN
5ppm
10ppm NO
2
3.5ppm
20ppm SO
2
6ppm
Nitrogen Dioxide [NO
2
]
50ppm NO
<-5ppm
20ppm SO
2
<-15ppm
10ppm Cl
2
<80ppm
400ppm H
2
<0.1ppm
20ppm H
2
S
<-35ppm
400ppm CO
<0.1ppm
20 ppm NH
3
< 0.1 ppm
50 ppm C
2
H
4
< 0.1 ppm
5 vol% CO
2
< 0.1 ppm
200ppb O
3
<120ppm
Oxygen [O
2
]
no data
Sulphur Dioxide [SO
2
]
300ppm CO
<3ppm
5ppm NO
2
-5ppm
6.6 PrimaX P List of Combustible Gases and Vapours detectable with
Catalytic Sensor P/N 10112716
Relative response factors of tested gases with reference to Propane
For the gases or vapours shown in the tables of this chapter the response curves have been tested
according to EN 60079-29-1:2016. If the LEL of a substance was not listed in EN 60079-20-1:2010, the LEL
has been taken from the Chemsafe data base (Dechema, Frankfurt). Due to legal requirements other locally
used LEL values might be mandatory. It is highly recommended that the gas detector is exposed to clean air
when calibrating the zero and a mixture of the target gas in air with a concentration of approximately 50%
LEL. If calibration with the target gas is not possible a reference calibration can be performed with 0.85 %
(v/v) Propane C
3
H
8
in air and using the relative response data given in the table of this chapter. These values
are only valid for new sensors and may vary after aging or poisoning and, unless otherwise stated, they refer
to an ambient temperature of 20°C. If using a reference gas to calibrate the gas detector the displayed
values may vary by up to +/- 20% from the target gas concentration.
GB PrimaX 40
6 Technical Data