Knick Portavo 908 Multi Betriebsanleitung Seite 36

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pH ORP
Interval and Difference (Combined)
When the delta range related to the last DIFF entry is exceeded, a new entry is cre-
ated (example: entry A) and the delta range is displaced upwards or downwards by
the delta value. As long as the measured value remains within the delta range, log-
ging is performed at the preset interval. The first DIFF entry is automatically created
when the data logger is started.
Measured variable
4
3
Delta
2
Delta
1
Start logger
Limit Value (Combined)
When one of the two limit values (Min/Max) is exceeded, the data are logged as
defined by the "event interval". Additionally, the last ten measured values before an
event are recorded (pre-trigger). As long as the measured value remains within the
limits, logging is performed at the preset "basic interval".
Measured variable
= entry
Oxy Cond
Example: Logger type "Interval + Difference"
Delta
A
Example: Logger type "Limit value"
Basic interval
Pre-trigger 10 x
Interval
= entry
Event interval
Data Logger
Time
Max limit
Time
Min limit