Vega VEGABAR 86 User manual

Operating Instructions
Pressure transmitter with ceramic
measuring cell
VEGABAR 86
Slave sensor for electronic differential pres-
sure
Document ID: 45052

2
Contents
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbolism used............................................................................................................... 4
2 For your safety
2.1 Authorised personnel ....................................................................................................... 5
2.2 Appropriate use................................................................................................................ 5
2.3 Warning about incorrect use............................................................................................. 5
2.4 General safety instructions............................................................................................... 5
2.5 CE conformity................................................................................................................... 5
2.6 Measuring range - permissible process pressure............................................................. 6
2.7 Environmental instructions ............................................................................................... 6
3 Product description
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 8
3.3 Packaging, transport and storage................................................................................... 10
3.4 Accessories and replacement parts ............................................................................... 11
4 Mounting
4.1 General instructions to use the instrument ..................................................................... 12
4.2 Ventilation and pressure compensation.......................................................................... 13
4.3 Combination Master - Slave ........................................................................................... 14
4.4 Dierential pressure measurement ................................................................................ 15
4.5 Interface measurement .................................................................................................. 15
4.6 Density measurement .................................................................................................... 16
4.7 External housing ............................................................................................................ 18
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 19
5.2 Connecting..................................................................................................................... 19
5.3 Single chamber housing................................................................................................. 20
5.4 External housing with version IP 68 (25 bar)................................................................... 21
5.5 Connection example ...................................................................................................... 23
6 Set up with the display and adjustment module
6.1 Parameter adjustment - Quick setup .............................................................................. 24
6.2 Parameter adjustment - Extended adjustment................................................................ 27
7 Diagnosis, asset management and service
7.1 Maintenance .................................................................................................................. 37
7.2 Rectify faults................................................................................................................... 37
7.3 Exchanging the electronics module................................................................................ 37
7.4 Exchange process assembly with version IP 68 (25 bar)................................................ 37
7.5 How to proceed in case of repair.................................................................................... 39
8 Dismounting
8.1 Dismounting steps.......................................................................................................... 40
8.2 Disposal ......................................................................................................................... 40
9 Supplement
9.1 Technical data ................................................................................................................ 41

3
Contents
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
9.2 Dimensions .................................................................................................................... 47
Safety instructions for Ex areas
Please note the Ex-specic safety information for installation and op-
eration in Ex areas. These safety instructions are part of the operating
instructions manual and come with the Ex-approved instruments.
Editing status: 2013-10-09

4
1 About this document
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
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 instruc-
tions for maintenance and fault rectication. Please read this informa-
tion 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 specialist
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 malfunctions 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.
• List
The dot set in front indicates a list with no implied sequence.
→ Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.

5
2 For your safety
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must
be carried out only by trained specialist personnel authorised by the
plant operator.
During work on and with the device the required personal protective
equipment must always be worn.
2.2 Appropriate use
VEGABAR 86 is a slave sensor for electronic dierential pressure
measurement.
You can nd detailed information on the application range in chapter
"Product description".
Operational reliability is ensured only if the instrument is properly
used according to the specications in the operating instructions
manual as well as possible supplementary instructions.
2.3 Warning about incorrect use
Inappropriate or incorrect use of the instrument can give rise to
application-specic hazards, e.g. vessel overll 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 stand-
ard regulations and guidelines. The user must take note of the safety
instructions in this operating instructions manual, the country-specic
installation standards as well as all prevailing safety regulations and
accident prevention rules.
The instrument must only be operated in a technically awless and
reliable condition. The operator is responsible for trouble-free opera-
tion of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new regula-
tions.
2.5 CE conformity
The device fullls the legal requirements of the applicable EC guide-
lines. By axing the CE marking, we conrm successful testing of the
product.
You can nd the CE Certicate of Conformity in the download section
of our homepage.

6
2 For your safety
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
2.6 Measuring range - permissible process
pressure
The permissible process pressure is specied on the type label with
"process pressure", see chapter "Conguration". For safety reasons,
this range must not be exceeded. This applies also if a measuring
cell with higher measuring range (order-related) than the permissible
pressure range of the process tting is installed.
2.7 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 pro-
tection. The environment management system is certied according
to DIN EN ISO 14001.
Please help us fulll this obligation by observing the environmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

7
3 Product description
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
3 Product description
3.1 Conguration
The nameplate contains the most important data for identication and
use of the instrument:
2
1
13
14
15
16
12
11
5
3
6
4
7
8
9
10
Fig. 1: Layout of the type label (example)
1 Instrument type
2 Product code
3 Field for approvals
4 Power supply and signal output, electronics
5 Protection rating
6 Measuring range
7 Permissible process pressure
8 Material, wetted parts
9 Hardware and software version
10 Order number
11 Serial number of the instrument
12 Symbol of the device protection class
13 ID numbers, instrument documentation
14 Reminder to observe the instrument documentation
15 Notied authority for CE marking
16 Approval directive
The type label contains the serial number of the instrument. With it
you can nd the following data on our homepage:
• Product code of the instrument (HTML)
• Delivery date (HTML)
• Order-specic instrument features (HTML)
• Operating instructions at the time of shipment (PDF)
• Order-specic sensor data for an electronics exchange (XML)
• Test certicate pressure transmitters (PDF)
Go to www.vega.com, "VEGA Tools" and "Serial number search".
As an alternative, you can nd the data via your Smartphone:
• Download the smartphone app "VEGA Tools" from the "Apple App
Store" or the "Google Play Store"
• Scan the Data Matrix code on the type label of the instrument or
• Enter the serial number manually in the app
Type plate
Serial number

8
3 Product description
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
This operating instructions manual applies to the following instrument
versions:
• Hardware from 1.0.0
• Software version from 1.0.0
The scope of delivery encompasses:
• VEGABAR 86 pressure transmitter
• Connection cable to the master sensor
• Cable gland for the master sensor
• Documentation
– this operating instructions manual
– Test certicate measuring accuracy (optional)
– Supplementary instructions manual "Plug connector for con-
tinuously measuring sensors" (optional)
– Ex-specic "Safety instructions" (with Ex versions)
– if necessary, further certicates
3.2 Principle of operation
The VEGABAR 86 slave sensor is combined with a sensor from the
VEGABAR 80 series for electronic dierential pressure measurement.
The sensors are connected via a screened four-wire cable.The
measured value from the slave sensor is read in and factored into the
calculations. Parameter adjustment is carried out through the master
sensor.
The dierential pressure measurement is suitable for the measure-
ment of the following process variables:
• Level
• Flow
• Dierential pressure
• Density
• Interface
Scope of this operating
instructions manual
Scope of delivery
Electronicdierential
pressure measurement
Measured variables

9
3 Product description
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
Fig. 2: Electronic level dierence measurement through Master/Slave combina-
tion
The VEGABAR 86 slave sensor is combined with a sensor from the
VEGABAR 80 series for electronic dierential pressure measurement.
The sensors are connected via a screened four-wire cable.The
measured value from the slave sensor is read in and factored into the
calculations. Parameter adjustment is carried out through the master
sensor.
The VEGABAR 86 is a suspension pressure transmitter for level
measurement in wells, basins and open vessels. Its great exibility
through dierent cable and tube versions allows the instrument to be
used in many dierent applications.
Measured products are liquids.
Depending on the instrument version and measurement setup, meas-
ured products can be also viscous or contain abrasive substances.
Sensor element is the CERTEC®measuring cell with robust ceramic
diaphragm. The process pressure deects the ceramic diaphragm
and causes a capacitance change in the measuring cell. This capaci-
tance change is converted into an electrical signal and outputted as
measured value via the output signal.
The measuring cell design depends on the selected pressure type.
Relative pressure: the measuring cell is open to atmosphere. The
ambient pressure is detected in the measuring cell and compensated.
It thus has no inuence on the measured value.
Electronicdierential
pressure measurement
Application area
Measured products
Measuring system
Pressure types

10
3 Product description
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
Absolute pressure: the measuring cell is evacuated and encapsu-
lated. The ambient pressure is not compensated and does hence
inuence the measured value.
Relative pressure, climate-compensated: the measuring cell is
evacuated and encapsulated. The ambient pressure is detected
through a reference sensor in the electronics and compensated. It
thus has no inuence on the measured value.
The following illustration shows the installation of the CERTEC®
measuring cell in the transmitter as well as the sealing concept.
1
2
3
4
5
Fig. 3: Front-ush installation of the CERTEC® measuring cell with double seal
1 Housing, transmitter
2 Measuring cell
3 Lateral seal for measuring cell
4 Additional, front seal for measuring cell
5 Diaphragm
3.3 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
based on ISO 4180.
The packaging of standard instruments consists of environment-
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 in due 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 con-
cealed 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:
• Not in the open
• Dry and dust free
Seal concept
Packaging
Transport
Transport inspection
Storage

11
3 Product description
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
• Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
3.4 Accessories and replacement parts
The protective cover protects the sensor housing against soiling and
intense heat from solar radiation.
You will nd additional information in the supplementary instructions
manual "Protective cover" (Document-ID 34296).
Screwed anges are available in dierent versions according to the
following standards: DIN 2501, EN 1092-1, BS 10, ANSI B 16.5,
JIS B 2210-1984, GOST 12821-80.
You can nd additional information in the supplementary instructions
manual "Flanges according to DIN-EN-ASME-JIS" (Document-ID
31088).
Welded sockets are used to connect the sensors to the process.
You can nd further information in the supplementary instructions
"Welded socket VEGABAR series 80" (Document-ID 45082).
The electronics module VEGABAR series 80 is a replacement part
for pressure transmitters of VEGABAR series 80. There is a dierent
version available for each type of signal output.
You can nd further information in the operating instructions "Elec-
tronics module VEGABAR series 80" (Document-ID 45054).
Storage and transport
temperature
Protective cap
Flanges
Welded socket
Electronics module

12
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
4 Mounting
4.1 General instructions to use the instrument
Make sure that all parts of the instrument exposed to the process are
suitable for the existing process conditions.
These are mainly:
• Active measuring component
• Process tting
• Process seal
Process conditions are particularly:
• Process pressure
• Process temperature
• Chemical properties of the medium
• Abrasion and mechanical inuences
You can nd the specications of the process conditions in chapter
"Technical data" as well as on the nameplate.
Protect your instrument further through the following measures
against moisture penetration:
• Use the recommended cable (see chapter "Connecting to power
supply")
• Tighten the cable gland
• Loop the connection cable downward in front of the cable gland
This applies particularly to:
• Outdoor mounting
• Installations in areas where high humidity is expected (e.g. through
cleaning processes)
• Installations on cooled or heated vessels
On instruments with process tting thread, the hexagon must be tight-
ened with a suitable screwdriver. Wrench size see chapter "Dimen-
sions".
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
In case of strong vibrations at the mounting location, the instrument
version with external housing should be used. See chapter "External
housing".
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 hous-
ing and connection cable are not exceeded.
Suitability for the process
conditions
Protection against mois-
ture
Screwing in
Vibrations
Temperature limits

13
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
1
2
Fig. 4: Temperature ranges
1 Process temperature
2 Ambient temperature
4.2 Ventilation and pressure compensation
Ventilation and pressure compensation are carried out with VE-
GABAR 86 via a lter element. It is air permeable and moisture-
blocking.
Caution:
The lter element causes a time-delayed pressure compensation.
When quickly opening/closing the housing cover, the measured value
can change for approx. 5 s by up to 15 mbar.
For eective ventilation, the lter element must always be free of
buildup.
Caution:
Do not use a high-pressure cleaner. The lter element could be dam-
aged, which would allow moisture into the housing.
The following paragraphs describe how the lter element is arranged
in the dierent instrument versions.
The lter element is mounted into the electronics housing. It has the
following functions:
• Ventilation electronics housing
• Atmospheric pressure compensation (with relative pressure meas-
uring ranges)
Filter elements
Instruments in non-Ex
and Ex-ia version

14
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
1 2 3
4 4 4
Fig. 5: Position of the lter element - non-Ex, Ex-ia version
1 Housing plastic, stainless steel precision casting
2 Housing aluminium
3 Housing stainless steel, electropolished
4 Filter element
With the following instruments a blind plug is installed instead of the
lter element:
• Instruments in protection IP 66/IP 68 (1 bar) - ventilation via capil-
laries in x connected cable
• Instruments with absolut pressure
The lter element is mounted into the electronics housing. It has the
following functions:
• Ventilation electronics housing
• Atmospheric pressure compensation (with relative pressure meas-
uring ranges)
1
Fig. 6: Position of the lter element - IP 69K version
1 Filter element
Instruments with absolute pressure have a blind plug mounted
instead of the lter element.
4.3 Combination Master - Slave
In principle, any sensor combination within the VEGABAR 80 series is
allowed. The following requirements must be fullled:
• Conguration, Master sensor suitable for electronic dierential
pressure
• Pressure type is identical for both sensors, i.e. relative pressure/
relative pressure or absolute pressure/absolute pressure
• The master sensor must always measure the higher pressure
• Measurement setup as shown in the following chapters
Instruments in IP 69K
version

15
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
4.4 Dierentialpressuremeasurement
With the Master/Slave combination, a gauge dierent measurement
can be realized.
2
3
1
Fig. 7: Measurement setup with a level dierence measurement
4.5 Interface measurement
With the Master/Slave combination also an interface measurement
can be realised.
Requirements for a functioning measurement are:
• Vessel with changing level
• Products with steady densities
• Interface always between the measurement points
• Total level always above the upper measurement point
Measurement setup
Measurement setup

16
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
12
h
0,8
1,0
Fig. 8: Measurement setup with interface measurement, h = distance between
the two measuring points
1 VEGABAR 86
2 VEGABAR 86 - Slave sensor
The interface measurement is possible in open as well as in closed
vessels.
4.6 Density measurement
With the Master/Slave combination also a density measurement can
be realised.
Requirements for a functioning measurement are:
• Vessel with changing level
• Product with consistent density
• Distance between the measurement points as large as possible
• Level always above the upper measuring point
Measurement setup

17
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
12
h
Fig. 9: Measurement setup with density measurement, h = distance between
the two measuring points
1 VEGABAR 86
2 VEGABAR 86 - Slave sensor
Density measurement is possible in open as well as in closed ves-
sels. Small changes in the density cause only small changes in the
measured dierential pressure. So a suitable measuring range has to
be selected.

18
4 Mounting
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
4.7 External housing
1
2
3
4
Fig. 10: Arrangement measurement loop, external housing
1 Vessel
2 Sensor
3 Connection cable sensor - external housing
4 External housing
5 Signal cable
1. Mark the holes according to the following drilling template
2. Fasten wall mounting plate with 4 screws
90 mm
(3.54")
R 3,5 mm
(0.14")
3mm
(0.12")
70 mm
(2.76")
8 mm
(0.32")
93 mm
(3.66")
110 mm
(4.33")
Fig. 11: Drilling template - wall mounting plate
Conguration
Mounting

19
5 Connecting to power supply
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
5 Connecting to power supply
5.1 Preparing the connection
Always keep in mind the following safety instructions:
• Connect only in the complete absence of line voltage
• If overvoltage surges are expected, overvoltage arresters should
be installed
The voltage supply and the signal transmission are carried out via the
four-wire, screened connection cable from the master sensor.
You can nd the data for this signal circuit in chapter "Technical data".
With plastic housing, the NPT cable gland or the Conduit steel tube
must be screwed without grease into the threaded insert.
Max. torque for all housings see chapter "Technical data".
5.2 Connecting
The voltage supply and signal output are connected via the spring-
loaded terminals in the housing.
The connection to the display and adjustment module or to the inter-
face adapter is carried out via contact pins in the housing.
Information:
The terminal block is pluggable and can be removed from the
electronics.To do this, lift the terminal block with a small screwdriver
and pull it out. When reinserting the terminal block, you should hear it
snap in.
Proceed as follows:
1. Unscrew the housing cover
2. If a display and adjustment module is installed, remove it by turn-
ing it slightly to the left.
3. Loosen compression nut of the cable entry
4. Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
5. Insert the cable into the sensor through the cable entry
Safety instructions
Voltage supply
Cable gland ½ NPT
Connection technology
Connection procedure

20
5 Connecting to power supply
VEGABAR 86 • Slave sensor for electronic dierential pressure
45052-EN-131011
Fig. 12: Connection steps 5 and 6
6. Insert the wire ends into the terminals according to the wiring plan
Information:
Solid cores as well as exible cores with wire end sleeves are insert-
ed directly into the terminal openings. In case of exible cores without
end sleeves, press the terminal from above with a small screwdriver;
the terminal opening is freed. When the screwdriver is released, the
terminal closes again.
You can nd further information on the max. wire cross-section under
"Technical data/Electromechanical data"
7. Check the hold of the wires in the terminals by lightly pulling on
them
8. Connect the screen to the internal ground terminal, connect the
outer ground terminal to potential equalisation
9. Tighten the compression nut of the cable entry. The seal ring must
completely encircle the cable
10. Reinsert the display and adjustment module, if one was installed
11. Screw the housing cover back on
The electrical connection is hence nished.
5.3 Single chamber housing
The following illustration applies to the non-Ex, Ex-ia and Ex-d ver-
sion.