Filter
Top Products
Emerson Process Management GmbH & Co. OHG 7-23
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
7
Maintenance & Procedures
7.4.3 Advanced Calibration
Gasow V4
Procedure Purging
Time 10 s
The procedure starts showing the screen
to the left, indicating that valve V4 is open.
Currently the system is purged (prepurge) to
ensure it is properly lled with zero gas when
zero calculation starts. Here the remaining
purge time is 10 seconds (decreasing from the
value entered in the calibration setup screen,
page 7-14).
Gasow V4
Procedure Zeroing
Time 38 s
When the prepurge time has elapsed, the
instrument starts to calculate the zero point
(indicated by the term Zeroing): Zero gas is
still applied, the 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.
Gasow Sample
CO2.1 0.000 ppm
Procedure Purging
Time 10 s
After zero calibration has nished, the instru-
ment closes the zero gas valve and opens the
sample gas valve. Now a postpurge procedu-
re starts to indicate that proper sample gas
measurement values require the system to be
lled with the related gas only. Postpurge time
is purge time plus 2x damping time as entered
in the calibration setup ( page 7-14) and
measurement setup ( page 6-29).
The zero calibration procedure has nished
when the last time interval shows remaining
0 seconds and the gas ow is sample.
Now press
either the LEFT key to return to the advanced
calibration menu to select another calibration
procedure
or the HOME key to return to the measuring
screen.
The analyzer immediately begins zero
calibration(s). Watch the screen for status
information (in the following explained by
means of exemplary gures).