West Control Solutions DataVU 7 - Manual (Page 94)

9 Parameterization
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9.1 Fine calibration
Using “Fine calibration”, an adjustment (correction) of the internal analog
measurements can be activated. The adjustment is carried out using a linear equation.
Example Systematic errors, such as those caused by an unsuitable probe mounting, have
occurred in a plant. A probe provides measurements that cover a temperature range
from 200 to 300°C. It has been installed in a tunnel oven so unfavorably as to always
indicate 10°C less than the temperature of the charge. The incorrect measurement
can be corrected through fine calibration.
Parameterization  Fine calibration 
Analog input 1

Actual start val. : 200°C
Parameterization  Fine calibration 
Analog input 1

Target start val. : 210°C
Parameterization  Fine calibration 
Analog input 1

Actual end val. : 300°C
Parameterization  Fine calibration 
Analog input 1

Target end val. : 310°C
9.2 Counters/integrators
With the aid of this function, the present counter and integrator states can be
altered (for instance, to 0 or any start value). The alteration is documented in
the event list whereby the old and the new values are specified. It is effective
only once.
9.3 Date and time
Using this function, the current date and current time are set for the recorder.
Additional functions for configuring date and time functions (e.g. daylight
saving time) can be found in the menu Configuration
 Date and time.
v Chapter 24 "Configuration - Date and Time"