Vega VEGABAR 86 Operating Instructions Manual page 69

Submersible pressure transmitter with ceramic measuring cell

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11 Supplement

Function block Signal Characterizer

The function block "Signal Characterizer" has two channels the outputs of which are not in linear

relation with the respective input. The non-linear relation is defined by a look-up table with individu-

ally selectable x/y-pairs. The respective input signal is imaged on the corresponding output, hence

this function block can be used in a control loop or signal path. Optionally the function axis can be

exchanged in channel 2 so that the block can be also used in a reverse control loop.

Fig. 39: Schematic presentation function block Signal Characterizer

Function block Integrator

The function block "Integrator" integrates a continuous input signal over the time and sums the

results of an impulse input block. It is used as a totalizer up to a reset or as a subtotalizer up to a

reference point at which the integrated and accumulated value is compared with the default values.

When these default values are reached, digital output signals will be outputted. The integration func-

tion is carried out upwardly starting with zero and downwards with a default value. Two flow values

are also available so that the net flow volume can be calculated and integrated. This can be used for

calculation of volume and mass changes in the vessel or for optimisation of flow controls.

Fig. 40: Schematic presentation function block Integrator

Function block Input Selector

The function block "Input Selector" offers selection possibilities for up to four inputs and generates

VEGABAR 86 • Foundation Fieldbus

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