ZIROX SGM7, Руководство пользователя, Страница: 36 / 43

Oxygen Monitor SGM7 10 Appendix
HB_SGM7_eng.docx
36
For example:
You know the concentration of hydrogen in the measuring gas (e.g. 7 vol%).
The ZIROX-device (e.g. SGM) displays the H
2
O/H
2
-ratio of 3.3 x 10
-4
.
From this it follows a H
2
O concentration of 0.00231 vol% or 23.1 ppm (1 ppm
is 10
-4
vol%).
You must calculate:
Hydrogen concentration x H
2
O/H
2
(3.3 x 10
-4
) = H
2
O concentration
70000 ppm X 0.00033 = 23.1 ppm