VEGA VEGABAR 66 Foundation Fieldbus - Инструкция (Страница 62)

62
10 Приложение
VEGABAR 66 • Foundation Fieldbus
36740-R
U-130320
t
i
Simulat
e
ALARMS
Out PV
FIELD-VALUE
Mode & Status PVF-TIME LO
W
-C
UT
O
FF
L-TYP
E
OUT-SCAL
E
PV-SCALE DIRECT
INDIRECT
INDIRECT
SQRT
bar % Lin%
Primary
Value
Secondary
Value 1
Secondary
Value 2
Sensor mounting
correction
AI 2
AI 3
AI 1
TB
Temperature
Sensor_Value
Linearization adjustment
Channel = 1: Primary Value
Channel = 2: Secondary Value 1
Channel = 3: Secondary Value 2
Channel = 4: Temperature
Рис. 32: Transducer Block VEGABAR 66
TB Transducer Block
AI Function Block (AI =Analogue Input)
Диаграмма установки параметров
На рисунке ниже представлена функция установки параметров:
Secondary_value_2
scale_in_0 scale_in_100 Sensor_value
0 %
100 %
bar
0,500 -0,500
0 % 100 %
scale_in_100 scale_in_0
Рис. 33: Установка VEGABAR 66
Список параметров
В данном списке представлены наиболее важные параметры и их значение:
•
primary_value
– Process Value after min/max-adjustment and linearization. Selected as input to AIFB by setting
'Channel' = 1. Unit derives from 'Primary_value_unit'
•
primary_value_unit
– Unit code of 'Primary_value'
– %
•
secondary_value_1
– Process pressure. Selected as input to AIFB by setting 'Channel' = 2. Unit derives from
'Secondary_value_1_unit'
•
secondary_value_1_unit
– Unit code of 'Secondary_value_1'
– bar, PSI, …, m, ft, …; in case of length type engineering unit and access to parameters the
corresponding values will be converted by density factor