Inficon XL3000flex - Suppressing Gas Backgrounds with ZERO Functions

INFICON Operation | 6
XL3000flex-Operating-instructions-jina83en1-07-(2105) 67 / 108
Mass Calibration factor SNIF
2 H2
3 M3
4 He
2XL XL H2
3XL XL M3
4XL XL He
LD protocol Commands 519, 521
ASCII protocol Command *FACtor:CALSniff or *FACtor:CALSXL for the
current mass
6.3.5 Suppressing gas backgrounds with "ZERO" functions
Unwanted sample gases can be suppressed with ZERO. If ZERO is enabled, the
currently measured leak rate value will be interpreted as carrier gas and subtracted
from all subsequently measured values. The background value suppressed by ZERO
is adjusted automatically if the background changes inside the device. The
background value is automatically adjusted depending on the set ZERO time, except
for filter setting I•CAL, see "Measurement result display with signal filters [}69]".
Activating and
deactivating ZERO
ZERO aktivate/deaktivate
0 On
1 Off
Control unit Main menu > Function > ZERO > ZERO
LD protocol Command 6
ASCII protocol Command ZERO
Setting ZERO mode
Specified the level of the helium background suppressed by ZERO (not with filter
I•CAL).
0 all decades
1 1 – 2 decades
2 2 – 3 decades
3 2 decades
4 3 – 4 decades
5 19/20 of the tracer gas are suppressed
Control unit Main Menu > Settings > ZERO/filter > ZERO > ZERO mode
LD protocol Command 410
ASCII protocol Command *CONFig:DECADEZero