VEGA BAR75 User Manual

Operating Instructions

VEGABAR 75
4 … 20 mA/HART

Process pressure/

Hydrostatic

p

Contents

1 About this document

1.1 Function . . .

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

5

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

5

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

5

2 For your safety

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

6

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

6

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

6

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

6

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

7

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

7

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

7

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

8

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

8

3 Product description

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

9

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

10

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

11

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

11

4 Mounting

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

13

4.2 Mounting steps . . . . . . . . . . . . . . . . . . . . . . . .

14

5 Connecting to power supply

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

15

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

17

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

18

6 Set up

6.1 Setup steps without VEGADIS 12 . . . . . . . . . . .

20

6.2 Setup steps with VEGADIS 12 . . . . . . . . . . . . .

20

7 Setup with PACTware™

7.1 Connect the PC with VEGACONNECT 3 . . . . .

23

7.2 Connect the PC with VEGACONNECT 4 . . . . .

24

7.3 Parameter adjustment with PACTware™. . . . . .

25

7.4 Parameter adjustment with AMS™ and PDM . .

25

7.5 Saving the parameter adjustment data . . . . . . .

25

2 VEGABAR 75 - 4 … 20 mA/HART

Contents

28433-EN-070718

8 Maintenance and fault rectification

8.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .

26

8.2 Fault clearance . . . . . . . . . . . . . . . . . . . . . . . .

26

8.3 Instrument repair . . . . . . . . . . . . . . . . . . . . . . .

27

9 Dismounting

9.1 Dismounting steps. . . . . . . . . . . . . . . . . . . . . .

28

9.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

10 Supplement

10.1 Technical data. . . . . . . . . . . . . . . . . . . . . . . . .

29

10.2 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . .

36

10.3 Industrial property rights. . . . . . . . . . . . . . . . . .

40

10.4 Trademark . . . . . . . . . . . . . . . . . . . . . . . . . . .

40

Supplementary documentation

Information:

Depending on the ordered version, supplementary documen­tation belongs to the scope of delivery. You find this
documentation in chapter "Product description".

Instructions manuals for accessories and replacement
parts

Tip:

To ensure reliable setup and operation of your VEGABAR 75,
we offer accessories and replacement parts. The associated
documents are:

l Supplementary instructions manual 3203

6 "Welded socket

and seals"

l Operating instructions manual 32798 "Breather housing

VEGABOX 02"

l Operatin

g instructions manual 20591 "External indicating

and adjustment unit VEGADIS 12"

VEGABAR 75 - 4 … 20 mA/HART 3

Contents

28433-EN-070718

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 is ignored, faults or malfunc-
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 indicates special instructions for Ex applications.

l List

The dot set in

front indicates a list with no implied sequence.

à Action

This arrow indicates a

single action.

1 Sequence

Numbers set in front indicate successive steps in a procedure.

4 VEGABAR 75 - 4 … 20 mA/HART

About this document

28433-EN-070718

2 For your safety

2.1 Authorised personnel

All operations descr

ibed in this operating instructions manual
must be carried out only by trained specialist personnel
authorised by the operator.

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

2.2 Appropriate use

VEGABAR 75 is a pressure transmitter for measurement of
gauge pressure, absolute pressure and vacuum.

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.

Due to 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.

VEGABAR 75 - 4 … 20 mA/HART 5

For your safety

28433-EN-070718

During the entire duration of use, the user is obliged to

determine the compliance of the required occupational safety
measures with the current valid rules and regulations and also
take note of 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

VEGABAR 75 is in CE conformity with EMC (89/336/EWG),
fulfils NAMUR recommendation NE 21 and is in CE conformity
with LVD (73/23/EWG).

Conformity has been judged according to the following
standards:

l EMC:

- Emission EN 61326: 2004 (class B)

- Susceptibil

ity EN 6132

6: 2004 including

supplement A

l LVD: EN 61010-1: 2001

VEGABAR 75 is not subject to the pressure device guideline.

1)

2.7 Fulfilling NAMUR recom

mendations

VEGABAR 75 fulfills the following NAMUR recommendations:

l NE 21 (interference resistane and emitted interference)
l NE 43 (signal level for failure

information)

l NE 53 (compatibility sensor and indicating/adjustment

components)

VEGA instruments are generally upward and downward
compatible:

l Sensor

software to DTM VEGABAR 75 HART

l DTM

VEGABAR 75 for adjustment software PACTware™

The parameter adjustment of the basic sensor functions is

independent of the software version. The range of available
functions depends on the respective software version of the
individual components.

The software version of VEGABAR 75 HART can be read out
via PACTware™.

1)

Due to the flush diaphragm, no own pressure compartment is formed.

6 VEGABAR 75 - 4 … 20 mA/HART

For your safety

28433-EN-070718

You can view all software histories on our website www.vega.

com. Make use of this advantage and get registered for update
information via e-mail.

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.

Please help us fulfil this obligation by observing the environ­mental instructions in this manual:

l Chapter "Packaging, transport

and

storage"

l Chapter "D isposal"

VEGABAR 75 - 4 … 20 mA/HART 7

For your safety

28433-EN-070718

3 Product description

3.1 Configuration

The scope

of delivery encompasses:

l VEGABAR 75 pressure transmitter
l Documentation

- this

operating instructions manual

- Test certificate for pressure transmitters

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

- if necessary, further certificates

VEGABAR 75 consists of the following components:

l Process fitting

with measuring cell

l Housing

with electronics

l Connection cable (direct cable outlet)

The

components are available in different versions.

1

2

3

Fig. 1: Example of a VEGABAR 75 with process fitting G1½ A
1 Connection cable
2 Housing with electronics
3 Process fitting with measuring cell

Scope of delivery

Components

8 VEGABAR 75 - 4 … 20 mA/HART

Product description

28433-EN-070718

3.2 Principle of operation

VEGABAR 75 is a pressure transmitter for use in the chemical,
food processing and pharmaceutical industry. Thanks to the
high protection class IP 68/IP 69K it is particularly suitable for
use in humid environment. Depending on the version, it is used
for level, gauge pressure, absolute pressure or vacuum
measurements. Measured products are gases, vapours and
liquids, also with higher temperatures.

The METEC

®

measuring cell is the measuring unit. It consists

of the ceramic-capacitive CERTEC

®

measuring cell and a

special, temperature-compensating isolating system.

The hydrostatic pressure of the product or the process
pressure causes a capacitance change in the measuring cell
via the metal process diaphragm and the isolating liquid. This
change is converted into a corresponding output signal.

1 2

3

4 5

Fig. 2: Components of the METEC®measuring cell
1 Process diaphragm
2 Base element
3 Adapter
4 Isolating liquid
5 CERTEC®measuring cell

The CERTEC

®

measuring cell is also equipped with a
temperature sensor. The temperature value can be processed
via the signal output.

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

Area of application

Functional principle

Supply

VEGABAR 75 - 4 … 20 mA/HART 9

Product description

28433-EN-070718

The supply voltage range can differ depending on the

instrument version.

The data for power supply are stated in chapter "Technical
data" in the "Supplement".

3.3 Operation

VEGABAR 75 4 … 20 mA/HART can be adjusted with different
adjustment media:

l with external adjustment/indication VEGADIS 12
l an adjustment software according to FDT/DTM standard,

e.g. PACTware™ and PC

l with a HART handheld

The

kind

of adjustment and the adjustment options depend on
the selected adjustment component. The entered parameters
are generally saved in the respecitive sensor, when adjusting
with PACTware™ and PC optionally also in the PC.

3.4 Packaging, transport and storage

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

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.

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

in the open

Packag

ing

Transp

ort

Transport inspection

Storage

10 VEGABAR 75 - 4 … 20 mA/HART

Product description

28433-EN-070718

l Dry and dust free
l Not exposed to corrosive media
l Protected against

solar radiation

l Avoiding mechanical shock and vibration

l Storage and transport temperature see "Supplement -

Technical data - Ambient condi

tions"

l Relative humidity 20 … 85 %

Storage and

transport tem-

perature

VEGABAR 75 - 4 … 20 mA/HART 11

Product description

28433-EN-070718

4 Mounting

4.1 General instructions

Make sure that

the wetted parts of VEGABAR 75, especially
the seal and process fitting, are suitable for the existing
process conditions such as pressure, temperature etc. as well
as the chemical properties of the medium.

You can find the specifications in chapter "Technical data" in
the "Supplement".

Caution:

After removal of the diaphragm protective cover, the dia­phragm must not be pressed.

l The connection cable has a capillary for atmospheric

pressure compensation

à Lead the

cable end into a dry space or into a suitable

terminal housing.

Information:

VEGA recommends the breather housing VEGABOX 02 or the
indication/adjustment VEGADIS 12. Both contain terminals
and a ventilation filter for pressure compensation. For
mounting outdoors, a suitable protective cover is available.

Higher process temperatures often mean also higher ambient
temperatures. Make sure that the upper temperature limits
stated in chapter "Technical data" for the environment of the
electronics housing and connection cable are not exceeded.

Materials, wetted parts

Diaphragm protec-

tion

Connection

Temperature limits

12 VEGABAR 75 - 4 … 20 mA/HART

Mounting

28433-EN-070718

1

2

Fig. 3: Temperature ranges
1 Process temperature
2 Ambient temperature

4.2 Mounting steps

Seal the thread with teflon, hemp or a similar resistant seal
material on the process fitting thread 1½ NPT.

à Screw VEGABAR 75 into the welded socket. Tighten the

hexagon on the process fitting with a suitable wrench.

Wrench size, see chapter "Dimensions".

Seal the flange connections according to DIN/ANSI with a

suitable, resistant seal and mount VEGABAR 75 with suitable
screws.

Use the seal suitable for the respective process fitting. You can
find the components in the line of VEGA accessories in the

supplementary instructions manual "Welded socket and
seals".

Sealing/Screwing in threaded
versions

Sealing/Screwing in flange
versions

Sealing/Screwing in hygienic
fittings

VEGABAR 75 - 4 … 20 mA/HART 13

Mounting

28433-EN-070718

5 Connecting to power supply

5.1 Preparing the

connection

Always keep in mind the following safety instructions:

l Connect only in the complete absence of line voltage
l If overvoltage surges are expected, versions with inte-

grated

overvoltage arresters should be used or external

overvoltage arresters should be installed

Tip:

We recommend the version of VEGABAR 75 with integrated
overvoltage arrester or VEGA type ÜSB62-36G.X as external
overvoltage arreaster.

In hazardous areas you should take note of the appropriate
regulations, conformity and type approval certificates of the
sensors and power supply units.

Power supply and current signal are carried on the same two­wire cable. The voltage supply range can differ depending on
the instrument version.

The data for power supply are stated in chapter "Technical
data" in the "Supplement".

Provide a reliable separation of the supply circuit from the
mains circuits according to DIN VDE 0106 part 101.

VEGA power supply units VEGATRENN 149AEx, VEGASTAB
690, VEGADIS 371 as well as all VEGAMETs meet this

requirement. When using one of these instruments, protection
class III is ensured for VEGABAR 75.

Bear in mind the following factors regarding supply voltage:

l Outpu

t voltage of the power supply unit can be lower under

nominal

load (with a sensor current of 20.5 mA or 22 mA in

case of fault message)

l Influence

of additional instruments in the circuit (see load

values in chapter "Technical data")

VEGABAR 75 is connected with standard two-wire cable
without screen. An outer cable diameter of 5 … 9 mm ensures
the seal effect of the cable gland when connecting via
VEGABOX 02 or VEGADIS 12. If electromagnetic interference
is expected which is above the test values of EN 61326 for

Note safety instructions

Take note of safety

instructions for Ex
applications

Select power supply

Selecting connection cable

14 VEGABAR 75 - 4 … 20 mA/HART

Connecting to power supply

28433-EN-070718

industrial areas, screened cable should be used. For HART
multidrop operation we recommend as standard practice the
use of screened cable.

1

2

Fig. 4: Connection of VEGABAR 75
1 Direct connection
2 Connection via VEGABOX 02 or VEGADIS 12

If screened cable is necessary, connect the cable screen on
both ends to ground potential. In the VEGABOX 02 or
VEGADIS 12, the screen must be connected directly to the
internal ground terminal. The ground terminal on the outside of
the housing must be connected to the potential equalisation
(low impedance).

If potential equalisation currents are expected, the connection
on the processing side must be made via a ceramic capacitor
(e.g. 1 nF, 1500 V). The low frequency potential equalisation
currents are thus suppressed, but the protective effect against
high frequency interference signals remains.

Take note of the corresponding installation regulations for Ex
applications. In particular, make sure that no potential equal­isation currents flow over the cable screen. In case of
grounding on both sides this can be achieved by the use of a
capacitor or a separate potential equalisation.

Cable screening and ground­ing

Select connection
cable for Ex applica­tions

VEGABAR 75 - 4 … 20 mA/HART 15

Connecting to power supply

28433-EN-070718

5.2 Connection procedure

Proceed as follows:

1 Wire the connection cable up to the connection compart-

ment. The bending radius must be at least 25 mm.

2)

2 Connect the wire ends

to the screw terminals according to

the wiring plan

Proceed as follows:

1 Snap connection housing onto the carrier rail or screw it to

the mounting plate

2 Loosen the cover screws and remove the cover
3 Insert the cable through the cable entry into the connection

housing housing

4 Loosen the screws with a screwdriver
5 Insert the wire ends into the open terminals according to

the wiring plan

6 Tighten the screws with a screwdriver
7 Check the hold of the wires in the terminals by lightly

pulling on them

8 Tighten the compression nut of the cable entry. The seal

ring must completely encircle the cable

9 Connect the supply cable according to steps 3 to 8
10 Screw the housing cover back on

The electrical connection is finished.

2)

The connection cable is already preconfectioned. After shortening the ca­ble, fasten the type plate with support again to the cable.

Direct connection

Via VEGABOX 01 or VEGADIS

12

16 VEGABAR 75 - 4 … 20 mA/HART

Connecting to power supply

28433-EN-070718

5.3 Wiring plan

5

1
2
3

4

Fig. 5: Wire assignment, connection cable
1 brown (+): to power supply or to the processing system
2 blue (-): to power supply or to the processing system
3 yellow: is only required with VEGADIS 12, otherwise connect to minus or

with VEGABOX 01 to terminal 3

3)

4 Screen
5 Breather capillaries with filter element

1

2

+

1 2 3 4 5 6

1 2 3 4 5 6

Fig. 6: Terminal assignment VEGABAR 75
1 To power supply or the processing system
2 Screen

4)

Wire number Wire colour/Polarity VEGABAR 75 terminal

1 brown (+) 1

2 blue (-) 2

3 Yellow 2

Screen Ground

3)

For customer-specific versions already connected with blue (-) when being
shipped.

4)

Connect screen to ground terminal. Connect ground terminal on the outside
of the housing as prescribed. The two terminals are galvanically connected.

Direct connection

Connection via VEGABOX 02

VEGABAR 75 - 4 … 20 mA/HART 17

Connecting to power supply

28433-EN-070718

+

–

+

–

VEGADIS 12

TRANSMITTER

+

4...20mA

+

NOT USED

8 7 6 5 12 11 10 1 2

3

-

OPERATE

ti

ZERO

SPAN

TRANSMITTER

3

4

5

1

2

Fig. 7: Terminal assignment, VEGADIS 12
1 To power supply or the processing system
2 Control instrument (4 … 20 mA measurement)
3 Screen

5)

4 Breather capillaries
5 Suspension cable

Wire number Wire colour/Polarity Terminal VEGADIS

12

1 brown (+) 1

2 blue (-) 2

3 Yellow 3

5)

Connect screen to ground terminal. Connect ground terminal on the outside
of the housing as prescribed. The two terminals are galvanically connected.

Connection via VEGADIS 12

18 VEGABAR 75 - 4 … 20 mA/HART

Connecting to power supply

28433-EN-070718

6 Set up

6.1 Setup steps w

ithout VEGADIS 12

After mounting and electrical connection, VEGABAR 75 is
ready for operation.

à Switch on voltage
The electronics now carries out a self-check for approx. 2

seconds. Then VEGABAR 75 delivers a current of 4 … 20 mA
according to the actual level.

6.2 Setup steps with VEGADIS 12

l zero - measuring range begin
l span - meas

uring range end

l ti - Integration

time

VEGADIS 12

TRANSMITTER

+

4...20mA

+

not used

8765

1211101 2 3

-

-

OPERATE

ti

ZERO

SPAN

TRANSMITTER

1

2

3

Fig. 8: Adjustment elements of VEGADIS 12
1 Rotary switch: choose the requested function
2 [+] key, change value (rising)
3 [-] key, change value (falling)

l With

the rotary switch the requested function is selected

l With the [+] and [-] keys, the signal current

or the

integration time are adjusted

l Finally the rotary switch is set to position "OPERATE"

The set values are transmitted to the EEPROM memory and
remain there even in case of voltage loss.

Proceed as follows for adjustment with VEGADIS 12:

1 Open housing cover
2 Connect hand multimeter to terminals 10 and 12
3 Meas. range begin: Set rotary switch to "zero"

Adjustment volume

Adjustment system

Adjustment steps, adjustment

VEGABAR 75 - 4 … 20 mA/HART 19

Set up

28433-EN-070718

4 Empty the vessel or reduce process pressure
5 Set a current of 4 mA with the [+] and [-] keys
6 Meas. range end: Set rotary switch to "span"
7 Fill the vessel or increase process pressure
8 Set a current of 20 mA with the [+] and [-] keys
9 Operation: Set rotary switch to "OPERATE"
10 Close housing cover

The adjustment data are effective, the output current 4 … 20 mA
corresponds to the actual level.

Proceed as follows for the adjustment of the integration time
with VEGADIS 12:

1 Open housing cover
2 Set rotary switch to "ti"
3 By pushing the [-] key 10-times, make sure that the

integration time is set to 0 sec.

4 For every 1 sec. requested integration time, push the [+]

key once.

5 The integration time is the time required by the output

current signal to reach 90 % of the actual height after a
sudden level change.

6 Set rotary switch to "OPERATE"
7 Close housing cover

The display outputs the current 4 … 20 mA as bar graph and
digital value.

With 4 mA no segment of the bar graph appears, with 20 mA
all segments appear. This assignment is fix.

You can scale the digital value to any value between -9999 …
+9999 via the adjustment module.

Proceed as follows for scaling the indication of VEGADIS 12:

1 Open housing cover
2 Initial value: Set rotary switch to "zero"
3 Set the requested value, e.g. 0 with the [+] and [-] keys
4 Final value: Set the rotary switch to "span"
5 Set the requested value, e.g. 1000 with the [+] and [-] keys
6 Decimal point: Set the rotary switch to "point"
7 With the [+] and [-] keys you can adjust the requested

value, e.g. 8888 (no decimal point)

Adjustment steps, integration
time

Adjustment steps, scaling

20 VEGABAR 75 - 4 … 20 mA/HART

Set up

28433-EN-070718

8 Set rotary switch to "OPERATE"
9 Close housing cover

The adjustment data are effective, the output current 4 … 20 mA
corresponds to the actual level.

VEGABAR 75 - 4 … 20 mA/HART 21

Set up

28433-EN-070718

7 Setup with PACTware™

7.1 Connect the PC with VEG

ACONNECT 3

~

=

2

3

1

4

Power supply

VEGACONNECT 3

TM

Fig. 9: Connecting the PC to the signal cable
1 RS232 connection (with VEGACONNECT 3) or USB connection (with

VEGACONNECT 4)
2 VEGABAR 75
3 HART adapter cable
4 HART resistance 250 Ohm

Necessary components:

l VEGABAR 75
l PC with PACTware™ and

suitable VEGA DTM

l VEGACONNECT 3 or 4 with HART adapter

cable (art. no.

2.25397)

l HART resistance approx. 250 Ohm
l Power supply unit

Note:

With power supply units with integrated HART resistance

(internal resistance approx. 250 Ohm), an additional external
resistance is not necessary (e.g. VEGATRENN 149A, VEGA­DIS 371, VEGAMET 381/624/625, VEGASCAN 693). In such
cases, VEGACONNECT 3 can be connected parallel to the
4 … 20 mA cable.

Connecting the PC to the
signal cable

22 VEGABAR 75 - 4 … 20 mA/HART

Setup with PACTware™

28433-EN-070718

7.2 Connect the PC with VEGACONNECT 4

2

4

3

1

OPEN

TWIST

USB

LOCK

Fig. 10: Connecting the PC via HART to the signal cable
1 VEGABAR 75
2 HART resistance 250 Ohm (optional depending on the processing)
3 Connection cable with 2 mm pins and terminals
4 Processing system/PLC/Voltage supply

Necessary components:

l VEGABAR 75
l PC with PACTware™ and

suitable VEGA DTM

l VEGACONNECT 4
l HART resistance

approx. 250 Ohm

l Power supply

unit or processing system

Note:

With power supply units with integrated HART resistance

(internal resistance approx. 250 Ohm), an additional external
resistance is not necessary. This applies, e.g. to the VEGA
instruments VEGATRENN 149A, VEGADIS 371, VEGAMET

381). Also usual Ex separators are most of the time equipped
with a sufficient current limitation resistor. In such cases,
VEGACONNECT 4 can be connected parallel to the 4 … 20 mA
cable.

Connection via HART

VEGABAR 75 - 4 … 20 mA/HART 23

Setup with PA CTware™

28433-EN-070718

7.3 Parameter adjustment with PACTware™

Further setup steps are described in the operating instructions
manual "DTM Collection/PACTware™" attached to each CD
and which can also be downloaded from our homepage. A
detailed description is available in the online help of
PACTware™ and the VEGA DTMs.

Note:

Keep in mind that for setup of VEGABAR 75, DTM-Collection
in the actual version must be used.

All currently available VEGA DTMs are provided in the DTM
Collection on CD and can be obtained from the responsible
VEGA agency for a token fee. This CD includes also the up-to-
date PACTware™ version. The basic version of this DTM
Collection incl. PACTware™ is also available as a free-of-
charge download from the Internet.

Go via

www.vega.com and "Downloads" to the item "Soft-

ware".

7.4 Parameter adjustment with AMS™ and PDM

For VEGA sensors, instrument descriptions for the adjustment
programs AMS™ and PDM are available as DD or EDD. The
instrument descriptions are already implemented in the current
versions of AMS™ and PDM. For older versions of AMS™ and

PDM, a free-of-charge download is available via Internet.

Go via

www.vega.com and "Downloads" to the item "Soft-

ware".

7.5 Saving the parameter adjustment data

It is recommended to document or save the parameter
adjustment data. They are hence available for multiple use or
service purposes.

The VEGA DTM Collection and PACTware™ in the licensed,
professional version provide suitable tools for systematic
project documentation and storage.

24 VEGABAR 75 - 4 … 20 mA/HART

Setup with PACTware™

28433-EN-070718

8 Maintenance and fault rectification

8.1 Maintenance

When used as

directed in normal operation, VEGABAR 75 is

completely maintenance free.

8.2 Fault clearance

The operator of the system is responsible for taken suitable
measures to remove interferences.

VEGABAR 75 offers maximum reliability. Nevertheless faults
can occur during operation. These may be caused by the
following, e.g.:

l Sensor
l Process
l Supply
l Signal processing

The first

measures

to be taken are to check the output signals
as well as to evaluate the error messages via the indicating
and adjustment module. The procedure is described below.
Further comprehensive diagnostics can be carried out on a PC
with the software PACTware™ and the suitable DTM. In many
cases, the causes can be determined in this way and faults
can be rectified.

However, if these measures are not successful, call the VEGA
service hotline in urgent cases under the phone no. +49 1805

858550.

The hotline is available to you 7 days a week round-the-clock.
Since we offer this service world-wide, the support is only

available in the English language. The service is free of
charge, only the standard telephone costs will be charged.

Connect a handheld multimeter in the suitable measuring
range according to the wiring plan.

? 4 … 20 mA signal not stable

l Level fluctuations

à Adjust

integration

time via PAC

Tware™

l no atmospheric pressure compensation

à Check the capillaries

and cut them clean

Reaction in case of failures

Causes of malfunction

Fault rectification

24 hour service hotline

Checking the 4 … 20 mA sig­nal

VEGABAR 75 - 4 … 20 mA/HART 25

Maintenance and fault rectification

28433-EN-070718

à Check the pressure compensation in the housing and

clean the filter element, if necessary

? 4 … 20 mA signal missing

l Wrong connection to power supply

à Check connection according

to chapter "Connection

steps" and if necessary, correct according to chapter
"Wiring plan"

l No

voltage supply

à Check cables for

breaks; repair if necessary

l supply voltage too low or load resistance too high

à Check, adapt if necessary

? Current

signal 3.6 mA; 22 mA

l electronics module or measuring cell defective

à Exchange

instrument or return

instrument for repair

In Ex applications, the regulations for the wiring of intrinsically
safe circuits must be observed.

Depending on the failure reason and measures taken, the
steps described in chapter "Set up" must be carried out again,
if necessary.

8.3 Instrument repair

If a repair is necessary, please proceed as follows:

You can download a return form (23 KB) from the Internet on

our homepage

www.vega.com under: "Downloads - Forms

and certificates - Repair form".

By doing this you help us carry out the repair quickly and
without having to call back for needed information.

l Print and fill out one

form per instrument

l Clean the instrument and pack it damage-proof
l Attach the completed form and, if need be, also

a safety

data sheet outside on the packaging

l Please ask the agency serving you for the address of your

return shipment. You can find the respective agency on our
website

www.vega.com under: "Company - VEGA world-

wide"

Reaction after fault rectifica­tion

26 VEGABAR 75 - 4 … 20 mA/HART

Maintenance and fault rectification

28433-EN-070718

9 Dismounting

9.1 Dismounting steps

Warning:

Before dismounting, be aware of dangerous process con­ditions such as e.g. pressure in the vessel, high temperatures,
corrosive or toxic products etc.

Take note of chapters "Mounting" and "Connecting to power
supply" and carry out the listed steps in reverse order.

9.2 Disposal

The instrument consists of materials which can be recycled by
specialised recycling companies. We use recyclable materials
and have designed the electronics to be easily separable.

WEEE directive 2002/96/EG

This instrument is not subject to the WEEE directive 2002/96/
EG and the respective national laws (in Germany, e.g.
ElektroG). Pass the instrument directly on to a specialised

recycling company and do not use the municipal collecting
points. These may be used only for privately used products
according to the WEEE directive.

Correct disposal avoids negative effects to persons and
environment and ensures recycling of useful raw materials.

Materials: see chapter "Technical data"

If you cannot dispose of the instrument properly, please

contact us about disposal methods or return.

VEGABAR 75 - 4 … 20 mA/HART 27

Dismounting

28433-EN-070718

10 Supplement

10.1 Technical data

General data

Manufacturer VEGA Grieshaber KG

, D-77761 Schiltach
Type name VEGABAR 75
Pressure type Gauge pressure or gauge pressure
Measuring principle ceramic-capacitive, temperature-compensated

isolated system

Communication interface None

Materials and weights

Material 316L corresponds to 1.4404 or 1.4435
Materials, wetted parts

- Process fitting 316L

- Process diaphragm Hastelloy C276

Materials, non-wetted parts

- Isolating liquid med. white oil, FDA listed (silicone-free)

- Housing 316L

- Ground terminal 316Ti/316L

- Connection cable PUR, FEP, PE

Weight 0.8 … 8 kg (1.8 … 17.6 lbs), depending on

process fitting

Output variable

Output signal 4 … 20 mA/HART
Failure signal 22 mA (3.6 mA), adjustable
Max. output current 22.5 mA
Damping (63 % of the input variable) 0 … 10 s, adjustable
Step response or adjustment time 70 ms (ti: 0 s, 0 … 63 %)
Fulfilled NAMUR recommendations NE 43

Input variable

Adjustment

Zero adjustable -20 … +95 % of the nominal measuring range
Span adjustable 3.3 … +120 % of the nominal measuring range
Recommended max. turn down 10:1

Supplement

28 VEGABAR 75 - 4 … 20 mA/HART

28433-EN-070718

Nominal measuring ranges and overload resistance

Nominal range Overload, max. pressure Overload, min. pressure

Gauge pressure

0 … 0.1 bar/0 … 10 kPa 15 bar/1500 kPa -1 bar/-100 kPa

0 … 0.2 bar/0 … 20 kPa 20 bar/2000 kPa -1 bar/-100 kPa

0 … 0.4 bar/0 … 40 kPa 30 bar/3000 kPa -1 bar/-100 kPa

0 … 1 bar/0 … 100 kPa 35 bar/3500 kPa -1 bar/-100 kPa

0 … 2.5 bar/0 … 250 kPa 50 bar/5000 kPa -1 bar/-100 kPa

0 … 5 bar/0 … 500 kPa 50 bar/5000 kPa -1 bar/-100 kPa

0 … 10 bar/0 … 1000 kPa 50 bar/5000 kPa -1 bar/-100 kPa

0 … 25 bar/0 … 2500 kPa 50 bar/5000 kPa -1 bar/-100 kPa

-1 … 0 bar/-100 … 0 kPa 35 bar/3500 kPa -1 bar/-100 kPa

-1 … 1.5 bar/-100 … 150 kPa 50 bar/5000 kPa -1 bar/-100 kPa

-1 … 5 bar/-100 … 500 kPa 50 bar/5000 kPa -1 bar/-100 kPa

-1 … 10 bar/-100 … 1000 kPa 50 bar/5000 kPa -1 bar/-100 kPa

-1 … 25 bar/-100 … 2500 kPa 50 bar/5000 kPa -1 bar/-100 kPa

-0.05 … 0.05 bar/-5 … 5 kPa 15 bar/1500 kPa -1 bar/-100 kPa

-0.1 … 0.1 bar/-10 … 10 kPa 20 bar/2000 kPa -1 bar/-100 kPa

-0.2 … 0.2 bar/-20 … 20 kPa 30 bar/3000 kPa -1 bar/-100 kPa

-0.5 … 0.5 bar/-50 … 50 kPa 35 bar/3500 kPa -1 bar/-100 kPa

Absolute pressure

0 … 1 bar/0 … 100 kPa 35 bar/3500 kPa

0 … 2.5 bar/0 … 250 kPa 50 bar/5000 kPa

0 … 5 bar/0 … 500 kPa 50 bar/5000 kPa

0 … 10 bar/0 … 1000 kPa 50 bar/5000 kPa

0 … 25 bar/0 … 2500 kPa 50 bar/5000 kPa

Reference conditions and influencing variables (similar to DIN EN 60770-1)

Reference conditions according to DIN EN 61298-1

- Temperature 18 … 30 °C (64 … 86 °F)

- Relative humidity 45 … 75 %

- Air pressure 860 … 1060 mbar/86 … 106 kPa

(12.5 … 15.4 psi)

Determination of characteristics limit point adjustment according to DIN 16086

Supplement

VEGABAR 75 - 4 … 20 mA/HART 29

28433-EN-070718

Characteristics linear
Reference installation position upright, diaphragm points downward
Influence of the installation position <5 mbar/0.5 kPa (0.07 psi)

Deviation determined according to the limit point method according to IEC 60770

6)

Applies to digital HART interface as

well as to analogue current output 4 … 20 mA.

Specifications refer to the set span. T urn down (TD) = nominal measuring range/set span.
Deviation

- Turn down 1:1 up to 5:1 <0.075 %

- Turn down up to 10:1 <0.015 % x TD

Deviation with absolute pressure measuring range 0.1 bar

- Turn down 1:1 up to 5:1 <0.25 %

- Turn down up to 10:1 <0.05 % x TD

Influence of the product or ambient temperature

Applies to digital HART interface as well as to analogue current output 4 … 20 mA.
Specifications refer to the set span. T urn down (TD) = nominal measuring range/set span.

Average temperature coefficient of the zero signal

In the compensated temperature range of 0 … +100 °C (+212 °F), reference temperature
20 °C (68 °F):

Average temperature coefficient of the zero signal

- Turn down 1:1 <0.05 %/10 K

- Turn down 1:1 up to 5:1 <0.1 %/10 K

- Turn down up to 10:1 <0.15 %/10 K

Outside the compensated temperature range:
Average temperature coefficient of the zero signal

- Turn down 1:1 typ. <0.05 %/10 K

Thermal change of the current output

Applies also to the analogue 4 … 20 mA current output and refers to the set span.
Thermal change, current output <0.15 % at -40 … +80 °C (-40 … +176 °F)

Long-term stability (similar to DIN 16086, DINV 19259-1 and IEC 60770-1)

Applies to digital HART interface as well as to analogue current output 4 … 20 mA.
Specifications refer to the set span. T urn down (TD) = nominal measuring range/set span.

Long-term drift of the zero signal <(0.1 % x TD)/1 year

6)

Incl. non-linearity, hysteresis and non-repeatability.

Supplement

30 VEGABAR 75 - 4 … 20 mA/HART

28433-EN-070718

Total deviation (similar to DIN 16086)

The total deviation (max. practical deviation) is the sum of basic accuracy and long-term
stability:

F

total

= F

perf

+ F

stab

F

perf

= √((FT)2+ (FKl)2)

With

- F

total

: Total deviation

- F

perf

: Basic accuracy

- F

stab

: Long-term drift

- FT: Temperature coefficient (influ-

ence of medium or ambient tem­perature)

- F

Kl

: Deviation

Ambient conditions

Ambient, storage and transport temperature

- Connection cable PE -40 … +60 °C (-40 … +140 °F)

- Connection cable PUR, FEP -40 … +85 °C (-40 … +185 °F)

Process conditions

The specifications to the pressure stage and the product temperature are used as an
overview. The specifications of the type label are applicable.

Pressure stage, process fitting

- Thread 316L PN 60

- Hygienic fittings 316L PN 6, PN 10, PN 16, PN 25, PN 40

- Flange 316L PN 40 or 150 lbs, 300 lbs

Medium temperature (temperature: p

abs

>1 bar (14.5 psi)/p

abs

<1 bar (14.5 psi)

- Standard -12 … +150 °C/-12 … +130 °C (+10 … +302 °F/

+10 … +266 °F)

- with cooling element -12 … +180 °C/-12 … +130 °C (+10 … +356 °F/

+10 … +266 °F)

- with cooling element and screening
sheet

-12 … +200 °C/-12 … +130 °C (+10 … +392 °F/
+10 … +266 °F)

Vibration resistance mechanical vibrations with 4 g and 5 … 100 Hz

7)

Shock

resistance Acceleration 100 g/6 ms (tested according to

EN 60068-2-27)

7)

Tested

according to the regulations of German Lloyd, GL directive 2.

Supplement

VEGABAR 75 - 4 … 20 mA/HART 31

28433-EN-070718

Electromechanical data

Connection cable

- Configuration four wires, one suspension cable, one breather
capillary, screen braiding, metal foil, mantle

- Wire cross-section 0.5 mm² (AWG no. 20)

- wire resistance <0.036 Ohm/m (0.011 Ohm/ft)

- Standard length 6 m (19.685 ft)

- max. length with VEGADIS 12 200 m (656.168 ft)

- Min. bending radius at 25 °C/77 °F 25 mm (0.985 in)

- Diameter approx. 8 mm (0.315 in)

- Colour - standard PE Black

- Colour - standard PUR Blue

- Colour - Ex-version Blue

Voltage supply

Supply voltage

- Non-Ex instrument 12 … 36 V DC

- EEx ia instrument 12 … 29 V DC

Permissible residual ripple

- <100 Hz U

ss

<1 V

- 100 Hz … 10 kHz U

ss

<10 mV

Load see diagram

Supplement

32 VEGABAR 75 - 4 … 20 mA/HART

28433-EN-070718

1000

710

500

250

12 18

1614 20 22 24 26 28 29 30 32 34 36

Ω

V

1

4

2

3

Fig. 11: Voltage diagram VEGABAR 75
1 HART load
2 Voltage limit Ex instrument
3 Voltage limit non-Ex instrument
4 Voltage supply

Load in conjunction with VEGADIS 12 see diagram

Ω

450

712,5

250

18 24 29 3633

3

4

2

1

V

Fig. 12: Voltage diagram VEGABAR 75 with VEGADIS 12
1 HART load
2 Voltage limit Ex instrument
3 Voltage limit non-Ex instrument
4 Voltage supply

Integrated overvoltage protection

Nominal leakage current (8/20 µs) 10 kA

Supplement

VEGABAR 75 - 4 … 20 mA/HART 33

28433-EN-070718

Min. response time <25 ns

Electrical protective measures

Protection IP 68 (25 bar)/IP 69K
Overvoltage category III
Protection class III

Existing approvals or approvals applied for

8)9)

ATEX ia ATEX II 1G EEx ia IIC

T6, ATEX II 2G

EEx ia IIC T6

ATEX D ATEX II 1/2D, 2D IP6X T
ATEX ia+D ATEX II 1G EEx ia IIC T6, ATEX II 1/2D, 2D

IP6X T

Ship approval GL, LRS, ABS, CCS, RINA, DNV
Other approvals WHG

8)

Deviating data in Ex applications: see separate safety instructions.

9)

Depending on order specification.

Supplement

34 VEGABAR 75 - 4 … 20 mA/HART

28433-EN-070718

10.2 Dimensions

VEGABAR 75 - threaded fitting

GG/GN

247,5 mm (9

3

/

4

")

111,5 mm (4

25

/

64

")

ø 55 mm
(2 11/64")

ø 41,6 mm

(1

5/

8

")

GL

ø 55 mm

(2 11/64")

55 mm

(2 11/

64

")

276 mm (10

55

/

64

")

69,5 mm

(2

47

/

64

")

46 mm

(1

13

/

16

")

ø 84 mm

(3 5/16")

64,5 mm

(2

35/

64

")

GG 180° C/200°C GG

249 mm (9

3

/

4

")

BA/BB BE

282 mm (9

3

/

4

")

249 mm (9

3

/

4

")

G1½A
NPT1½

M44x1,25 M56x1,25

SW 46 mm

(1 13/16")

G1½A

SW 46 mm

(1 13/16")

SW 60 mm

(2 23/64")

22 mm

(

25

/

64

")

Fig. 13: VEGABAR 75 - threaded fitting: GG = G1½ A, GN = 1½ NPT, GL = G1½ A thread length 55 mm, BB = M44x1.25,
BE = M56x1.25

Supplement

VEGABAR 75 - 4 … 20 mA/HART 35

28433-EN-070718

VEGABAR 75 - hygienic fitting 1

LACA CF

TA RV/RW

KA

249 mm (9

51

/

64

")

249 mm (9

51

/

64

")

249 mm (9

51

/

64

")

249 mm (9

51

/

64

")

ø 84 mm

(3 5/16")

ø 64 mm

(2

33/

64

")

ø 44,5 mm

(2

33/

64

")

ø 78 mm

(3 1/16")

ø 78 mm / ø 92 mm

(3

5/

64

" /

3 5/8")

279,5 mm (11")

ø 77,5 mm

(3 3/64")

249 mm (9

51

/

64

")

ø 41,6 mm

(1

5/

8

")

M64x2

SW 75 mm

(2 61/64")

Fig. 14: VEGABAR 75 - hygienic fitting: CA/CF = Tri-Clamp 2"/Tri-Clamp 2½", LA = hygienic fitting with compression nut
F40, TA = Tuchenhagen Varivent DN 32, RV/RW = bolting DN 40/DN 50 according to DIN 11851, KA = conus DN 40

Supplement

36 VEGABAR 75 - 4 … 20 mA/HART

28433-EN-070718

VEGABAR 75 - hygienic fitting 2

SA

249 mm (9

51

/

64

")

249 mm (9

51

/

64

")

ø 66 mm
(2 19/32")

ø 84 mm

(3 5/16")

ø 105 mm

(4 9/64")

AA/AB

SB

249 mm (9

51

/

64

")

ø 73 mm

(2 7/8")

ø 41,6 mm

(1

5

/

8

")

Fig. 15: VEGABAR 75 AA = DRD, hygienic fitting: SA = SMS DN 38, SB = SMS DN 51

Supplement

VEGABAR 75 - 4 … 20 mA/HART 37

28433-EN-070718

VEGABAR 75 - flange connection

3

15

/

32

"

4

1

/

64

"

5

7

/

16

"

5

7

/

16

"

1/

8

"

1/

8

"

1/

8

"

1/

8

"

4xø

45

/

64

"

4xø

45

/

64

"

8xø

45

/

64

"

8xø

45

/

64

"

4

21

/

64

"

4

59

/

64

"

6

19

/

64

"

6

19

/

64

"

5

29

/

32

"

6

1

/

2

"

7

7

/

8

"

7

7

/

8

"

45

/

64

"

25

/

32

"

15

/

16

"

15

/

16

"

DN PN D k b

FB 40 40

FC 50 40

d2 d4 f

FL 100 40

FH 80 40

DN PN D k

b

FB

mm

inch

40 40 150 18 110

FC 50 40 165 20 125

d2

4xø18

4xø18

d4

88

102

f

3

3

FL 100 40 200 24 160 8xø18 138 3

FH 80 40 200 24 160 8xø18 138 3

FQ 1½" 150

F5 2" 150

" lbs D b k d2 d4 f

FT 3" 300

1

2

3

5

/

8

"

6

3

/

16

"

8

1

/

4

" 1

1

/

8

"

1

1

/

4

"

1

/

8

"

1/

8

"

4xø

3

/

4

"

8xø

7

/

8

"

4

3

/

4

"

6

5

/

8

"

7

7

/

8

"

5“

3

/

4

"

2

7

/

8

"

1/

8

"

4xø

5

/

8

"3

7

/

8

"

11

/

16

"

EB 4"

300

10"

1/

8

"

8xø

7

/

8

"

6"

5"

d4

k

D

f

b

FB, FC, FH, FL, FQ, F5, FF, EB

d2

231 mm (9

3

/

32

")

ø 41,6 mm

(1

41

/

64

")

Fig. 16: VEGABAR 75 - flange connection
1 Flange connection according to DIN 2501
2 Flange fitting according to ANSI B16.5

Supplement

38 VEGABAR 75 - 4 … 20 mA/HART

28433-EN-070718

10.3 Industrial property rights

VEGA product lines are global protected by industrial property rights.
Further information see http://www.vega.com.
Only in U.S.A.: Further information see patent label at the sensor housing.

VEGA Produktfamilien sind weltweit geschützt durch gewerbliche Schutzrechte.
Nähere Informationen unter http://www.vega.com.

Les lignes de produits VEGA sont globalement protégées par des droits de
propriété intellectuelle.
Pour plus d'informations, on pourra se référer au site http://www.vega.com.

VEGA lineas de productos están protegidas por los derechos en el campo de la
propiedad industrial.
Para mayor información revise la pagina web http://www.vega.com.

Линии продукции фирмы ВЕГА защищаются по всему миру правами на
интеллектуальную собственность.
Дальнейшую информацию смотрите на сайте http://www.vega.com.

VEGA系列产品在全球享有知识产权保护。
进一步信息请参见网站<http://www.vega.com>。

10.4 Trademark

All brands used as well as trade and company names are
property of their lawful proprietor/originator.

Supplement

VEGABAR 75 - 4 … 20 mA/HART 39

28433-EN-070718

VEGA Grieshaber KG
Am Hohenstein 113
77761 Schiltach
Germany
Phone [phone]
Fax [phone]
E-mail: [e-mail]

www.vega.com

ISO 9001

All statements concerning scope of delivery, application,

practical use and operating conditions of the sensors and

processing systems correspond to the information avail-

able at the time of printing.

© VEGA Grieshaber KG, Schiltach/Germany 2007

Subject to change without prior notice 28433-EN-070718