Filter
Top Products
Emerson Process Management GmbH & Co. OHG 7-29
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
7
Maintenance & Procedures
7.4.3 Advanced Calibration
Gasow V4
Procedure Zeroing
Time 29 s
When the prepurge time has elapsed, the
instrument starts to calculate the zero point
(here indicated by the procedure term Zero-
ing) for all channels with the same zero gas
valve assigned: Zero gas is still applied, the
time count down starts at 40 s.
Note!
Multi channel instruments zeroing more than
1 channel at a time, show Zeroing in the
procedure line while calibration is ongoing. To
see which channels are currently calibrated,
see the status line in the measuring screen.
The rst screen appearing shows that valve
V4 is open. Currently the system is purged
(prepurge) to ensure it is properly lled with
span gas when span calculation is started.
Here the remaining purge time is 10 seconds
(decreasing from the value entered in the
calibration setup screen,
page 7-14).
Gasow V4
Procedure Purging
Time 10 s
Now the instrument is checked for additional
channels not yet zero calibrated and if there
are any, the procedure begins again with the
rst step as described at the top of this page,
now with another valve (zero gas).
Once all channels are zero calibrated, auto-
matically a span calibrate all channels proce-
dure is started:
This procedure is just a combination of the
two described before: At the beginning all
channels are zeroed and then all channels are
spanned: Watch the screen for status infor-
mation (in the following explained by means
of exemplary gures; valve designators for
example only).