128
EuroFID · Operating Instructions · 8011094 V2.3 · © SICK AG
“Maintenance” Sub-menu Functions
11.11.11
Purging parameters (purging time)
Function
After calibration the measuring system should be purged with zero gas (instrument air)
before measurement is resumed – otherwise the span gas which was in the measuring
system during calibration could trigger a threshold value alarm (H-alarm).
The “purging time” determines how long the measuring system should be purged with
instrument air (zero gas) after calibration. The purging time should correspond
approximately to the reaction time (dead time + 100% time) of the EuroFID.
Procedure
1
Open the menu: Main menu
Maintenance
System Parameters
User level
Purging time.
2
Press
or
.
➝
Entry field is highlighted.
3
Enter the required value.
4
Press
or
.
➝
E n d
is highlighted.
5
Press .
CAUTION:
Incorrect alarm signal resulting from inadequate purging time
If the purging time setting is inadequate, it is possible that an alarm signal
(threshold value exceeded) is still triggered.
It is preferable to select a long purging time rather than a short purging
time.
To determine the optimum purging time:
Check how long it takes for the measured value to remain constant after
switchover to a calibration gas.
S y s t e m P a r a m e t e r s
P u r g i n g t i m e
P u r g e t i m e f . s h u t d o w n
1 - 3 6 0 0 9 0 s
C h a n g e o r
6 1 . 6 m g C
R a n g e . . . 1 0 0
Menu title
Menu title
Setting range / entry field
Current measured value
Current measuring range (measuring range end value)
E n d
Summary of Contents for EuroFID
Page 10: ...Contents 10 EuroFID Operating Instructions 8011094 V2 3 SICK AG ...
Page 18: ...18 EuroFID Operating Instructions 8011094 V2 3 SICK AG Important Information ...
Page 80: ...80 EuroFID Operating Instructions 8011094 V2 3 SICK AG Start up ...
Page 88: ...88 EuroFID Operating Instructions 8011094 V2 3 SICK AG Operation General ...
Page 100: ...100 EuroFID Operating Instructions 8011094 V2 3 SICK AG Main Menu Functions ...
Page 144: ...144 EuroFID Operating Instructions 8011094 V2 3 SICK AG Maintenance Sub menu Functions ...
Page 154: ...154 EuroFID Operating Instructions 8011094 V2 3 SICK AG Calibration ...
Page 158: ...158 EuroFID Operating Instructions 8011094 V2 3 SICK AG Shutdown ...
Page 182: ...182 EuroFID Operating Instructions 8011094 V2 3 SICK AG Clearing Malfunctions ...