Vega VEGABAR 82 User manual

Operating Instructions
Pressure transmitter with ceramic
measuring cell
VEGABAR 82
Slave sensor for electronic differential pres-
sure
Document ID: 45050

2
Contents
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group..................................................................................................................... 4
1.3 Symbols 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 EU conformity................................................................................................................... 6
2.6 Permissible process pressure .......................................................................................... 6
2.7 Installation and operation in the USA and Canada ........................................................... 6
2.8 Environmental instructions ............................................................................................... 6
3 Product description
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 8
3.3 Supplementary cleaning procedures.............................................................................. 14
3.4 Packaging, transport and storage................................................................................... 14
3.5 Accessories and replacement parts ............................................................................... 15
4 Mounting
4.1 General instructions ....................................................................................................... 16
4.2 Ventilation and pressure compensation.......................................................................... 17
4.3 Combination Master - Slave ........................................................................................... 19
4.4 Level measurement........................................................................................................ 21
4.5 Dierential pressure measurement ................................................................................ 21
4.6 Interface measurement .................................................................................................. 22
4.7 Density measurement .................................................................................................... 23
4.8 Density-compensated level measurement ..................................................................... 24
4.9 External housing ............................................................................................................ 26
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 27
5.2 Connecting..................................................................................................................... 28
5.3 Single chamber housing................................................................................................. 29
5.4 External housing with version IP 68 (25 bar)................................................................... 30
5.5 Connection example ...................................................................................................... 32
6 Set up with the display and adjustment module
6.1 Parameter adjustment - Quick setup .............................................................................. 33
6.2 Parameter adjustment - Extended adjustment................................................................ 33
7 Diagnosis, asset management and service
7.1 Maintenance .................................................................................................................. 46
7.2 Cleaning - hygienic connection with compression nut .................................................... 46
7.3 Rectify faults................................................................................................................... 47
7.4 Exchanging the electronics module................................................................................ 47
7.5 Exchange process assembly with version IP 68 (25 bar)................................................ 47
7.6 How to proceed if a repair is necessary.......................................................................... 49

3
Contents
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
8 Dismount
8.1 Dismounting steps.......................................................................................................... 50
8.2 Disposal ......................................................................................................................... 50
9 Supplement
9.1 Technical data ................................................................................................................ 51
9.2 Calculation of the total deviation..................................................................................... 61
9.3 Practical example........................................................................................................... 61
9.4 Dimensions .................................................................................................................... 64
9.5 Industrial property rights................................................................................................. 73
9.6 Trademark ...................................................................................................................... 73
Safety instructions for Ex areas
Take note of the Ex specic safety instructions for Ex applications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions manual.
Editing status: 2017-05-17

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1 About this document
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
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, fault rectication, the exchange of parts and
the safety of the user. Please read this information before putting the
instrument into operation and keep this manual accessible in the im-
mediate 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 Symbols 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 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
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 82 is a slave sensor for electronic dierential pressure
measurement.
You can nd detailed information about the area of application 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 this product can give rise to applica-
tion-specic hazards, e.g. vessel overll through incorrect mounting
or adjustment. Thus damage to property, to persons or environmental
contamination can be caused. Also the protective characteristics of
the instrument can be inuenced.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and directives. The instrument must only be operated in a
technically awless and reliable condition. The operator is responsi-
ble for the trouble-free operation of the instrument. When measuring
aggressive or corrosive media where a malfunction of the instrument
can cause a danger, the operator has to convince himself on the cor-
rect function of the instrument by taking suitable measures.
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.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
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. Arbi-
trary conversions or modications are explicitly forbidden. For safety
reasons, only the accessory specied by the manufacturer must be
used.

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2 For your safety
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
To avoid any danger, the safety approval markings and safety tips on
the device must also be observed and their meaning looked up in this
operating instructions manual.
2.5 EU conformity
The device fulls the legal requirements of the applicable EU direc-
tives. By axing the CE marking, we conrm the conformity of the
instrument with these directives.
You can nd the EU conformity declaration on our website under
www.vega.com/downloads.
2.6 Permissible process pressure
For safety reasons, the instrument must only be operated within the
permissible process conditions. You can nd detailed information on
the process conditions in chapter "Technical data" as well as on the
type label.
The permissible process pressure range is specied on the type label
with "Process pressure", see chapter "Conguration". This applies
even if a measuring cell with a measuring range (order-related) higher
than the permissible pressure range of the process tting is installed.
A temperature derating, e.g. with anges, can limit the permissible
process pressure range.
2.7 Installation and operation in the USA and
Canada
This information is only valid for USA and Canada. Hence the follow-
ing text is only available in the English language.
Installations in the US shall comply with the relevant requirements of
the National Electrical Code (ANSI/NFPA 70).
Installations in Canada shall comply with the relevant requirements of
the Canadian Electrical Code
2.8 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l this obligation by observing the environmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

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3 Product description
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
3 Product description
3.1 Conguration
The type label contains the most important data for identication and
use of the instrument:
2
1
13
14
12
10
11
5
3
6
4
7
8
9
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 Order number
10 Serial number of the instrument
11 Data matrix code for smartphone app
12 Symbol of the device protection class
13 ID numbers, instrument documentation
14 Reminder to observe the instrument documentation
The type label contains the serial number of the instrument. With it
you can nd the following instrument data on our homepage:
• Product code (HTML)
• Delivery date (HTML)
• Order-specic instrument features (HTML)
• Operating instructions and quick setup guide at the time of ship-
ment (PDF)
• Order-specic sensor data for an electronics exchange (XML)
• Test certicate (PDF) - optional
Go to "www.vega.com", "Instrument search (serial number)". Enter
the serial number.
Alternatively, you can access 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 label
Serial number - Instru-
ment search

8
3 Product description
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
This operating instructions manual applies to the following instrument
versions:
• Hardware from 1.0.0
• Software version from 1.0.0
Note:
You can nd the hardware and software version of the instrument as
follows:
• On the type plate of the electronics module
• In the adjustment menu under "Info"
The scope of delivery encompasses:
• Pressure transmitter VEGABAR 82 - Slave sensor
• Ready-made connection cable, unassembled cable gland
• Documentation
– Quick setup guide VEGABAR 82
– Characteristics test certicate
– Instructions for optional instrument features
– Ex-specic "Safety instructions" (with Ex versions)
– If necessary, further certicates
• DVD "DTM Collection", included therein
– PACTwa re
– DTM Collection
– Instrument master les (GSD) for Probus PA
– FDT certicates
Note:
Optional instrument features are also described in this operating
instructions manual. The respective scope of delivery results from the
order specication.
3.2 Principle of operation
The VEGABAR 82 slave sensor is combined with a sensor from the
instrument series for electronic dierential pressure measurement.
Scope of this operating
instructions manual
Scope of delivery
Electronicdierential
pressure

9
3 Product description
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
1
2
Fig. 2: Example, electronic dierential pressure for level measurement in pres-
surized vessel
1 VEGABAR 82
2 VEGABAR 82, slave sensor
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. Power supply and parameter adjustment are carried out
through the master sensor.
Information:
The version "Relative pressure climate-compensated" is not suitable.
You can nd further information in chapter "Combination Master -
Slave " of this operating instructions.
The electronic dierential pressure measurement is suitable for the
measurement of the following process variables:
• Level
• Flow
• Dierential pressure
• Density
• Interface
• Level, density-compensated
VEGABAR 82 is suitable for applications in virtually all industries. It is
used for the measurement of the following pressure types.
Measured variables
Application area

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3 Product description
VEGABAR 82 • Slave sensor for electronic dierential pressure
45050-EN-170522
• Gauge pressure
• Absolute pressure
• Vacuum
Measured products are gases, vapours and liquids.
Depending on the process tting and measurement setup, measured
products can be also viscous or contain abrasive substances.
The 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 capacitance change is converted into an electrical signal and
outputted as measured value via the output signal.
16 µm
1
2
3
Fig. 3: Conguration of the CERTEC® measuring cell
1 Process diaphragm
2 Glass joint
3 Base element
The measuring cell is available in two sizes:
• CERTEC® (ø 28 mm) with large process and ange connections
as well as with measuring ranges 25 mbar and 100 bar
• Mini-CERTEC® (ø 17.5 mm) with small process ttings
A temperature sensor in the ceramic diaphragm of the CERTEC®or
on the ceramic base of the Mini-CERTEC®measuring cell detects the
actual process temperature. The temperature value is outputted via:
• The display and adjustment module
• The current output or the additional current output
• The digital signal output
Extreme process temperature jumps are also immediately detected
by the CERTEC® measuring cell. The values are compared with that
of an additional temperature measurement on the ceramic base body.
Within only a few measuring cycles the intelligent sensor electronics
compensates unavoidable measurement deviations due to tempera-
ture shocks. Such shocks cause (depending on the set damping) only
slight, brief changes to the output signal.
Measured products
Measuring system pres-
sure
Measuring system tem-
perature