Vega VEGABAR 51 Foundation Fieldbus Bedienungsanleitung PDF herunterladen (Seite 54)

10 Supplement

VEGABAR 51 • Foundation Fieldbus

36715-EN-130321

Ʋ External housing IP65,IP66/IP68(0.2bar)

Overvoltage category III

Protection class II

Approvals

Instrumentswithapprovalscanhavedierenttechnicaldatadependingontheversion.

For that reason the associated approval documents of these instruments have to be carefully

noted. They are part of the delivery or can be downloaded under www.vega.comvia"VEGA Tools"

and"serial number search"aswellasvia"Downloads"and"Approvals".

10.2 Information on Foundation Fieldbus

Block diagram, measured value processing

ThefollowingillustrationshowstheTransducerBlockandFunctionblockinsimpliedform.

Simulate

ALARMS

OutPV

FIELD-VALUE

Mode & Status

PVF-TIME

LOW-CUTOFF

L-TYP

OUT-SCALE

PV-SCALE

DIRECT

INDIRECT

SQRT

bar%Lin%

Primary

Value

Secondary

Value 1

Secondary

Value 2

Sensor mounting

correction

AI 2

AI 3

AI 1

Temperature

Sensor_Value

Linearizationadjustment

Channel = 1: Primary Value

Channel = 2: Secondary Value 1

Channel = 3: Secondary Value 2

Channel = 4: Temperature

Fig. 28: Transducer Block VEGABAR 51

TB Transducer Block

AI Function Block (AI =Analogue Input)

Diagram, adjustment

The following illustration shows the function of the adjustment:

Secondary_value_2

scale_in_0 scale_in_100Sensor_value

0 %

100 %

bar

0,500-0,500

100

scale_in_100scale_in_0

Fig. 29: Adjustment VEGABAR 51

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 71 72

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