Siemens ULTRAMAT 23, Manual, Page: 123 / 244

Functions
8.2 Calibration
ULTRAMAT 23
Manual, 3/2016, A5E37100388-003
123
8.2.7.2 Calibration: AUTOCAL/drift values: Cycle time
Use this function to set or change the cycle time. This is the time between two AUTOCAL
procedures triggered automatically by the analyzer.
Valid cycle times are from 0 to 24 hours. A cyclic AUTOCAL is
not carried out if 0 hours is set.
The cycle time must not be more than 6 h if the analyzer is
used in German systems subject to TA Luft and 13.BlmSchV.
The fourth line indicates when the next AUTOCAL will take
place.
If the flow during a cyclic zero adjustment is too low, this ad-
justment is aborted and a fault is displayed. This procedure is
entered in the logbook.
8.2.7.3 Calibration: AUTOCAL/drift values: Purge time
Use this function to set or change the purge time. This is the duration of flow with sample
gas during an AUTOCAL procedure.
Following calling of the purge time you can set or change the
purge time in the second line of the menu display. Valid purge
times are:
•
60 to 600 seconds for analyzers with oxygen sensor
• 300 to 600 seconds for analyzers with hydrogen sulfide
sensor
•
0 to 600 seconds for all other analyzer versions.
There are minimum purge times depending on the measured
component, and shorter times should not be used.