Important functions (selection)
7.3 Calibration and validation functions
SIPROCESS UV600
Operating Instructions, 10/2013, A5E03529375-02
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Menu call:
Main menu → Calibrations → Settings Calib. → Measuring duration
The following menu is displayed (example):
Lines 3 and 4 show the minimum and maximum values of the measuring duration; the
duration can be edited in line 2 as described in section Character input (Page 64).
Setting the sample gas purging time
The sample gas purging time is a waiting time which passes following each calibration or
validation before the "Calibration" or "Validation" status is reset. The sample gas purging
time belongs to the sequence of the calibration/validation procedure. It is required to take
into consideration the analyzer's response time following switching over from the last
calibration gas to the sample gas. The setting applies to all calibrations and validations.
Criteria for the setting
The analyzer should be completely filled with the new gas at the end of a purging time and
display the "final" measured values of this gas. An appropriate purging time corresponds
approximately to the analyzer's response time (dead time + 100% time).
Measure the response time as follows:
●
For each component, check how long it takes following switching over to a different gas
until the displayed measured value remains constant
●
Use the longest response time as the purging time
●
On the other hand, do not define the purging times longer than necessary since the
normal measuring function is interrupted during a calibration or validation procedure.
CAUTION
Possible interferences with connected systems
If the sample gas purging time is set too short, the analyzer signals the normal operating
state before the measured values correspond to the actual concentrations. If the measured
values control connected systems, the result could be faulty control.
•
Select a sufficiently long sample gas purging time!