VEGA VEGADIF 55 4 … 20 mA_HART User Manual

Page 2

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Contents

1

About this document

1.1

F

unction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

1.2

T

arget group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

1.3

S

ymbolism used . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

2

For your safety

2.1

A

uthorised personnel . . . . . . . . . . . . . . . . . . . . . . . .

5

2.2

A

ppropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5

2.3

W

arning about misuse . . . . . . . . . . . . . . . . . . . . . . .

5

2.4

G

eneral safety instructions . . . . . . . . . . . . . . . . . . . .

5

2.5

S

afety approval markings and safety tips . . . . . . . . .

6

2.6

S

afety approval markings and safety tips . . . . . . . . .

6

2.7

CE

conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

2.8

S

afety instructions for Ex areas . . . . . . . . . . . . . . . .

6

2.9

E

nvironmental instructions . . . . . . . . . . . . . . . . . . . .

6

3

Product description

3.1

C

onfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

3.2

P

rinciple of operation . . . . . . . . . . . . . . . . . . . . . . . .

8

3.3

O

peration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

3.4

P

ackaging, transport and storage . . . . . . . . . . . . . . .

9

4

Mounting

4.1

G

eneral instructions . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2

M

ounting instructions for flow measurement . . . . . . . 12

4.3

M

ounting instructions for level measurement . . . . . . . 15

4.4

M

ounting instructions with differential pressure

measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.5

M

ounting for instruments with isolating diaphragms . . 21

4.6

M

ounting instructions for seal with flange mounting . . 24

4.7

H

eat insulation of instruments with flange isolating

diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.8

M

ounting instructions for wall or tube mounting . . . . . 26

4.9

M

ounting control . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5

Connecting to power supply

5.1

P

reparing the connection . . . . . . . . . . . . . . . . . . . . . 27

5.2

C

onnection procedure . . . . . . . . . . . . . . . . . . . . . . . 28

5.3

W

iring plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.4

T

ake 4 … 20 mA test signal . . . . . . . . . . . . . . . . . . . 30

5.5

L

oad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.6

C

onnection control . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.7

S

witch on phase . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6

Operation

6.1

S

hort description . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.2

L

ocal indication (optional) . . . . . . . . . . . . . . . . . . . . 32

6.3

A

djustment elements . . . . . . . . . . . . . . . . . . . . . . . . 35

6.4

L

ocal adjustment - local indication not connected . . . 37

2

VEGADIF

55 • 4 … 20

mA/HART

C

ontents

31731

-EN

-081119

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