6 | Operation CU1000 INFICON
30 / 46 CU1000-Operating-Instructions-jina54en1-09-(2404)
6.3.6.4 Set equivalence factor and molar mass
ü The equivalence factor is known. See also "Calculate equivalence factor [}29]".
ü The test gas used is specified (hydrogen or helium, mass 2, 3 or 4).
ü The molar mass of the equivalence gas you want to display is known.
1 Control unit: Settings > Set up > Operation modes > Equivalence rate
2 “Gas factor” button
ð (LD protocol: Command 469)
3 Select "Mass 2", "Mass 3" or "Mass 4" according to your test gas.
ð If the test gas is set to helium, the window "Equivalent Gas Factor He" opens.
4 Set the equivalence gas factor. In the example (see “Calculate equivalence
factor [}29]“) for 127:
5 Control unit: Settings > Set up > Operation modes > Equivalence rate
6 “Molar mass" button
ð (LD protocol: Command “470”)
7 Select "Mass 2", "Mass 3" or "Mass 4" to match your test gas as described
above.
ð If the test gas is set to helium, the window "Molar mass equivalent gas He"
opens.
8 Set your molar mass. In the example for 102:
ð If the equivalence factor is not equal to 1 or the molar mass is not set to factory
settings, the equivalence factor is displayed both on the calibration result and on
the measurement screen.
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