VEGA VEGAFLEX 83 Foundation Fieldbus PFA insulated - Manuale (Pagina 84)

84
11 Appendice
VEGAFLEX 83 • Foundation Fieldbus
44227-IT
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relative alla tecnica di misura. L'utente può scegliere l'algoritmo desiderato in base al nome, senza
disporre di conoscenze relative alla formula.
Sono disponibili i seguenti algoritmi:
•
Flow compensation, linear
•
Flow compensation, square root
•
Flow compensation, approximate
•
BTU flow
•
Traditional Multiply Divide
•
Average
•
Traditional Summer
•
Fourth order polynomial
•
Simple HTG compensated level
•
Fourth order Polynomial Based on PV
Figura 64: Rappresentazione schematica del blocco funzionale Arithmetic
Lista dei parametri
La seguente tabella fornisce una panoramica dei parametri utilizzati.
FF desciptor Description Unit
PRIMARY_VALUE PRIMARY_VALUE (Linearized value). This is the process va-
lue after min/max adjustment and Linearization with the status
of the transducer block. The unit is defined in "PRIMARY_VA-
LUE_UNIT"
PRIMARY_VALUE_UNIT Selected unit code for "PRIMARY_VALUE"
SECONDARY_VALUE_1 This is the measured value after min/max adjustment with the
status of the transducer block. The unit is defined in "SECON-
DARY_VALUE_1_UNIT"
SECONDARY_VALUE_1_U-
NIT
Selected unit code for "SECONDARY_VALUE_1"
SECONDARY_VALUE_2 This is the distance value ("sensor_value") with the status of
the transducer block. The unit is defined in "SECONDARY_VA-
LUE_2_UNIT"
FILL_HEIGHT_VALUE Filling height. The unit is defined in "FILL_HEIGHT_VALUE_U-
NIT"
FILL_HEIGHT_VALUE_UNIT Filling height unit