Instruction Manual OXY- SMART
13
6. Measuring gases containing H2
In order to measure gases containing hydrogen, change the Oxy-SMART
setting by pressing the H2 button,
The following screen is displayed:
Then measuring can be performed exactly in the same way as for inert gases.
The exact hydrogen fraction is not important for the measuring process,
But the maximum fraction of hydrogen must not exceed 10%.
!!! IMPORTANT !!!
After having worked with gases containing hydrogen, residues of gas remain
in the surfaces of the ducting and in the filter material
over an extended period of time.
If after the operation with forming gas, inert gas is measured, such as e.g.
nitrogen or argon, the measuring display will reach 0 ppm more rapidly than
usual.
In such a case, the device should be flushed with air for about 30min in order
to achieve again reproducible and usable measuring values.
The measuring device is not suitable for use with explosive gas mixtures, in
particular it is not suitable to measure pure hydrogen.
There is a risk of explosion!
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