Knick Protos 3400, User Manual

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144
Menu Display
Cal timer, Tolerance band recorder
Calibration Timer
After expiration of a presettable inter-
val (Parameter setting, Module PHU,
Cal preset values), the calibration timer
generates a warning message as a
reminder that calibration is required.
The remaining time can be indicated
in the measuring mode by pressing a
softkey (secondary display: “CTime”).
Diagnostics of PHU 3400(X)-110
Calibration timer, Tolerance band recorder, Cal record, Sensor network diagram,
Statistics
Tolerance Adjustment
Records the tolerance ranges for zero
and slope over the time. If the values
determined by a calibration exceed
the tolerance limits, an adjustment
can be executed automatically.
Display can be graphical or as a listing.
The tolerance band for zero and slope
is configured during parameter setting
(Module PHU 3400-110,
Cal preset values).
Adaptive cal timer
22.3 °C
7.00 pH
T-band recorder
Return
Zero
22.3 °C
7.00 pH
Slope
Return
Next calibration in approx. 102 h
(02.04.10 14:08)
Default
Adaptive
Current
El stress
168 h
160 h
58 h
5 %
61.7 50.7 8.00 6.00
pH
°C
CTime 160h Favorites menu
Adaptive Calibration Timer
The time until the next due
calibration is automatically reduced
depending on the electrode stress
(temperature, pH value).