VEGA WELL72 User Manual

Operating Instruction

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VEGAWELL 72
4 … 20 mA

s

Process pressure/

Hydrostat

ic

Content

Content

1 About this document

1.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Symbolism used . . . . . . . . . . . . . . . . . . . . . . .

2 For your safety

2.1 Authorised personnel. . . . . . . . . . . . . . . . . . . .

2.2 Appropriate use. . . . . . . . . . . . . . . . . . . . . . . .

2.3 Warning about misuse . . . . . . . . . . . . . . . . . . .

2.4 General safety instructions . . . . . . . . . . . . . . . .

2.5 Safety approval markings and safety tips . . . . .

2.6 CE conformity . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Fulfilling of NAMUR recommendations . . . . . . .

2.8 Safety instructions for Ex areas . . . . . . . . . . . .

2.9 Environmental instructions . . . . . . . . . . . . . . . .

3 Product description

3.1 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Principle of operation . . . . . . . . . . . . . . . . . . . .

3.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Packaging, transport and storage . . . . . . . . . . .

4 Mounting

4.1 General instructions. . . . . . . . . . . . . . . . . . . . .

4.2 Mounting steps with straining clamp . . . . . . . . .

4.3 Mounting steps with screwed connection . . . . .

4.4 Mounting steps with socket and plastic housing.

4
4
4

5
5
5
5
6
6
6
6
6

8
10
10
10

12
13
14
15

5 Connecting to power supply

5.1 Preparing the connection . . . . . . . . . . . . . . . . .

5.2 Connection procedure . . . . . . . . . . . . . . . . . . .

5.3 Wiring plan . . . . . . . . . . . . . . . . . . . . . . . . . . .

17
19
20

6 Set up

6.1 Setup procedure . . . . . . . . . . . . . . . . . . . . . . .

22

7 Maintenance and fault rectification

7.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2 Remove interferences . . . . . . . . . . . . . . . . . . .

7.3 Shorten suspension cable . . . . . . . . . . . . . . . .

7.4 Instrument repair . . . . . . . . . . . . . . . . . . . . . . .

23
23
24
26

8 Dismounting

8.1 Dismounting steps. . . . . . . . . . . . . . . . . . . . . .

2 VEGAWELL 72 • 4 … 20 mA

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Content

8.2 Disposal . . .

. . . . . . . . . . . . . . . . . . . . . . . . . .

9 Supplement

9.1 Technical data. . . . . . . . . . . . . . . . . . . . . . . . .

9.2 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . .

9.3 Industrial property rights. . . . . . . . . . . . . . . . . .

9.4 Trademark . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

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36
37
37

Supplementary documentation

Information:

Supplementary document

s appropriate to the ordered version

come with the delivery. You can find them listed in chapter

"Product description".

Instructions manuals for accessories and replacement
parts

Tip:

To ensure reliable

setup and operation of your VEGAWELL 72,
we offer accessories and replacement parts. The associated
documents are:

l 32798 - VEGABOX 02

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VEGAWELL 72 • 4 … 20 mA 3

1 About this document

1 About this document

1.1 Function

This operating instructions manual provides all the information
you need for mounting, connection and setup as well as
important instructions for maintenance and fault rectification.
Please read this information before putting the instrument into
operation and keep this manual accessible in the immediate
vicinity of the device.

1.2 Target group

This operating instructions manual is directed to trained
personnel. The contents of this manual should be made
available to these personnel and put into practice by them.

1.3 Symbolism used

Information, tip, note

This symbol

indicates helpful additional information.

Caution: If this warning
tions can result.
Warning: If this warning is ignored, injury to persons and/or
serious damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons
and/or destruction of the instrument can result.

Ex applications

This symbol

l List

The dot set in front indicates a list with no implied sequence.

indicates special instructions for Ex applications.

is ignored, faults or malfunc-

à Action

This arrow indicates a

1 Sequence

Numbers set in front indicate successive steps in a procedure.

4 VEGAWELL 72 • 4 … 20 mA

single action.

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2 For your safety

2 For your safety

2.1 Authorised

All operations descr
must be carried out only by trained specialist personnel
authorised by the plant operator.

During work on and with the device the required personal
protection equipment must always be worn.

personnel

ibed in this operating instructions manual

2.2 Appropriate use

VEGAWELL 72 is a suspension pressure transmitter for level
and gauge measurement.

You can find detailed information on the application range in
chapter "Product description".

Operational reliability is ensured only if the instrument is
properly used according to the specifications in the operating
instructions manual as well as possible supplementary
instructions.

For safety and warranty reasons, any invasive work on the
device beyond that described in the operating instructions
manual may be carried out only by personnel authorised by the
manufacturer. Arbitrary conversions or modifications are
explicitly forbidden.

2.3 Warning about misuse

Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards, e.g. vessel overfill or damage to
system components through incorrect mounting or adjustment.

2.4 General safety instructions

This is a high-tech instrument requiring the strict observance of
standard regulations and guidelines. The user must take note
of the safety instructions in this operating instructions manual,
the country-specific installation standards as well as all
prevailing safety regulations and accident prevention rules.

The instrument must only be operated in a technically flawless
and reliable condition. The operator is responsible for trouble­free operation of the instrument.

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VEGAWELL 72 • 4 … 20 mA 5

2 For your safety

During the entire duration of use, the user

must make sure that
the occupational safety measures taken always comply with
current valid policy as well as new regulations.

2.5 Safety approval markings and safety tips

The safety approval markings and safety tips on the device
must be observed.

2.6 CE conformity

The protection goals of the EMC Directive 2004/108/EC (EMC)
and the Low Voltage Directive 2006/95/EC (LVD) are fulfilled.

Conformity has been judged according to the following
standards:

EMC: EN 61326: 2004

(electrical instruments for control technology and laboratory
use - EMC requirements)

l Emission: Class A
l Susceptibil

ity: Industrial

areas

LVD: EN 61010-1: 2001

(safety

regulatio

ns for electrical measurement, control and

laboratory instruments - part 1: General requirements)

2.7 Fulfilling of NAMUR recommendations

With respect to interference resistance and emitted interfer­ence, the NAMUR recommendation NE 21 is fulfilled.

2.8 Safety instructions for Ex areas

Please note the Ex-specific safety information for installation
and operation in Ex areas. These safety instructions are part of
the operating instructions manual and come with the Ex­approved instruments.

2.9 Environmental instructions

Protection of the environment is one of our most important
duties. That is why we have introduced an environment
management system with the goal of continuously improving
company environmental protection. The environment man­agement system is certified according to DIN EN ISO 14001.

6 VEGAWELL 72 • 4 … 20 mA

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2 For your safety

Please help us fulfil this obligation

by observing the environ-

mental instructions in this manual:

l Chapter "Packaging, transport and storage"
l Chapter "Disposal"

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VEGAWELL 72 • 4 … 20 mA 7

3 Product description

3 Product description

3.1 Configuration

Scope of delivery

Components

The scope of delivery encompasses:

l VEGAWELL 72 pressure transmitter with
l optionally available with straining clamp, screwed con-

suspension cable

nection or plastic housing with cable locking

l or VEGAWELL 72 pressure transmitter with connection

tube

l Documentation

- this operating

instructions manual

- test certificate

- Ex-specific "Safety instructions" (with Ex-versions)

- if necessary, further certificates

VEGAWELL 72 with suspension cable consists of the following
components:

l Transmitter
l suspension cable (optionall

y available

with plastic housing)

VEGAWELL 72 with connection tube consists of the following
components:

l Transmitter
l Connection tube
l Housing or direct cable outlet, each with threaded

connection

The

components are available in different versions.

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3

2

1

4

3 Product description

screwed connection

Type label

Fig. 1: Example of a VEGAWELL 72 with
1 Transmitter
2 Suspension cable
3 Threaded fitting
4 Protective cap

The type label contains the most important data for identi-

fication and use of the instrument:

l Article
l Serial number
l Technical data
l Article numbers documentation

With the serial
instrument via "

number

number

number, you can access the delivery data of the

www.vega.com", "VEGA Tools" and "serial

search". In addition to the type label outside, you can

also find the serial number on the inside of the instrument.

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VEGAWELL 72 • 4 … 20 mA 9

3 Product description

Application range

Functional principle

Voltage supply

3.2 Principle of

operation

VEGAWELL 72 is used for level and gauge measurement in
wells, basins and atmospherically open vessels particularly in
the water/waste water industry as well as in the shipbuilding
industry.

The

1)

actual sensor element is the CERTEC

®

measuring cell
with rugged ceramic diaphragm. The hydrostatic pressure
causes a capacitance change in the measuring cell via the
ceramic diaphragm. This change is converted into an
appropriate output signal.

Two-wire electronics 4 … 20 mA for power supply and
measured value transmission on the same cable.

The supply voltage range can differ depending on the
instrument version.

Data for power supply are specified in chapter "Technical
data".

3.3 Operation

VEGAWELL 72 with 4 … 20 mA electronics has no adjustment
option.

3.4 Packaging, transport and storage

Packaging

Your instrument was protected by packaging during transport.
Its capacity to handle normal loads during transport is assured
by a test according to DIN EN 24180.

The packaging of standard instruments consists of environ-

ment-friendly, recyclable cardboard. For special versions, PE
foam or PE foil is also used. Dispose of the packaging material
via specialised recycling companies.

Transport

Transport must be carried out under consideration of the notes
on the transport packaging. Nonobservance of these instruc­tions can cause damage to the device.

Transport inspection

The delivery must be checked for completeness and possible
transit damage immediately at receipt. Ascertained transit
damage or concealed defects must be appropriately dealt
with.

1)

For use in closed vessels under vacuum, VEGAWELL 72 is available with
absolute pressure measuring ranges.

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3 Product description

Storage

Storage

temperature

and transport

Up to the time of installation, the packages must be left closed
and stored according to the orientation and storage markings
on the outside.

Unless otherwise indicated, the packages must be stored only
under the following conditions:

l Not
l Dry and dust free
l Not exposed to corrosive media
l Protected against solar
l Avoiding mechanical shock and vibration

l Storage and transport temperature see "Supplement -

l Relative humidity 20 … 85 %

in the open

radiation

Technical data - Ambient condi

tions"

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VEGAWELL 72 • 4 … 20 mA 11

4 Mounting

4 Mounting

Mounting position

Pressure compensation

4.1 General ins

Note the following

tructions

points when selecting the installation

location.

l Sidewa

ys movements of the transmitter can cause

measurement errors

à Therefore, mount VEGAWELL 72 in

a calm area or in a

suitable protective tube

Information:

We recommend

the measuring instrument holder from the
VEGA line of accessories (article no. BARMONT.B) for
fastening VEGAWELL 72.

l The protective cover prevents mechanical damage to the

measuring cell. It

should only be removed when the sensor

is deployed in extremely polluted water.

l The

connection cable has a capillary for atmospheric

pressure compensation

à Therefore lead

the cable end into a dry space or directly

into a suitable terminal housing.

Information:

this

For
contains

purpose, VEGA recommends VEGABOX 02. It

terminals and a filter element for pressure compen­sation. A suitable protective cover is available for outdoor
mounting.

Mounting example

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