Operating Instructions
VEGAFLEX 67
-40 … +150 °C
4 … 20 mA/HART - four-wire
Document ID:
31854
Guided Microwave
Contents
Contents
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 label on the instrument . . . . . . . . . . . . . . . . . .
2.6 CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Fulfillment of NAMUR recommendations . . . . . . . . . .
2.8 Safety instructions for Ex areas . . . . . . . . . . . . . . . . .
2.9 Environmental instructions. . . . . . . . . . . . . . . . . . . . .
3 Product description
3.1 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Packaging, transport and storage . . . . . . . . . . . . . . .
4 Mounting
4.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Instructions for installation . . . . . . . . . . . . . . . . . . . . .
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5 Connecting to power supply
5.1 Preparing the connection . . . . . . . . . . . . . . . . . . . . .
5.2 Connection procedure. . . . . . . . . . . . . . . . . . . . . . . .
5.3 Wiring plan, double chamber housing . . . . . . . . . . . .
6 Set up with the indicating and adjustment module PLICSCOM
6.1 Short description . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Insert indicating and adjustment module. . . . . . . . . . .
6.3 Adjustment system . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Setup steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5 Menu schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6 Saving the parameter adjustment data . . . . . . . . . . . .
7 Set up with PACTware and other adjustment programs
7.1 Connect the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Parameter adjustment with PACTware . . . . . . . . . . . .
7.3 Parameter adjustment with AMS™ and PDM . . . . . . .
7.4 Saving the parameter adjustment data . . . . . . . . . . . .
8 Maintenance and fault rectification
8.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Contents
8.2 Remove interferences. . . . . . . . . . . . . . . . . . . . . . . .
8.3 Exchanging the electronics module . . . . . . . . . . . . . .
8.4 Software update . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.5 Instrument repair . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Dismounting
9.1 Dismounting steps . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Supplement
10.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Supplementary documentation
Information:
Supplementary documents 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 VEGAFLEX 67, we
offer accessories and replacement parts. The corresponding documentations are:
l 27720 - VEGADIS 61
l 30207 - Electronics module VEGAFLEX series 60
l 34296 - Protective cover
l 31088 - Flanges according to DIN-EN-ASME-JIS-GOST
l 30391 - Spacer
Editing status: 2012-03-19
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VEGAFLEX 67 • 4 … 20 mA/HART - four-wire 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 qualified
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.
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.
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2 For your safety
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
VEGAFLEX 67 is a sensor for continuous interface measurement in
liquids.
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 countryspecific 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 trouble-free
operation 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
regulations.
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2 For your safety
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6 CE conformity
This device fulfills the legal requirements of the applicable EC
guidelines. By attaching the CE mark, VEGA provides a confirmation
of successful testing. You can find the CE conformity declaration in the
download area of "
www.vega.com".
2.7 Fulfillment of NAMUR recommendations
The device fulfills the requirements of the applicable NAMUR
recommendations.
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 Ex-approved
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 "Disposal"
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3 Product description
1
2
3
3.1 Structure
3 Product description
Scope of delivery
Constituent parts
The scope of delivery encompasses:
l Level sensor VEGAFLEX 67
l Documentation
- this operating instructions manual
- Operating instructions manual 27835 "Indicating and adjust-
ment module PLICSCOM" (optional)
- Supplementary instructions manual "Plug connector for con-
tinuously measuring sensors" (optional)
- Ex-specific "Safety instructions" (with Ex versions)
- if necessary, further certificates
The VEGAFLEX 67 consists of t he components:
l Process fitting with probe
l Housing with electronics
l Housing cover, optionally available with indicating and adjustment
module
Fig. 1: VEGAFLEX 67 - tube version with double chamber housing
1 Housing cover with integrated indicating and adjustment module (optional)
2 Housing with electronics
3 Process fitting
Type label
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The type label contains the most important data for identification and
use of the instrument:
l Article number
l Serial number
l Technical data
3 Product description
l Article numbers, documentation
With the serial number, you can access the delivery data of the
instrument via
www.vega.com, "VEGA Tools" and "serial number
search". In addition to the type label outside, you can also find the
serial number on the inside of the instrument.
3.2 Principle of operation
Application range
Functional principle
Prerequisites for inter-
face measurement
VEGAFLEX 67 is a level sensor with coax, rod or cable probe for
continuous interface measurment.
It is designed for industrial use in all areas of process technology and
can be used in liquids.
High frequency microwave impulses are guided along a steel cable or
rod or a rod inside a steel tube. When reaching the product surface, a
part of the microwave impulses is reflected. The other part passes the
upper product and is reflected a second time by the interface. The
running times to the two product layers are processed by the
instrument.
Upper medium (L2)
l The upper medium must not be conductive
l The dielectric figure of the upper medium must be known (input
required). Min. dielectric figure: rod version 1.7; coax version 1.4.
You can find a list with the dielectric figures on our home page:
www.vega.com
l The composition of the upper medium must be stable, no varying
products or mixtures
l The upper medium must be homogeneous, no stratifications within
the medium
l Min. thickness of the upper medium 100 mm
l Clear separation from the lower medium, no emulsion phase, no
mull layer
l If possible, no foam on the surface
Lower medium (L1)
l The dielectric figure must be 10 higher than the dielectric figure of
the upper medium, preferably electrically conductive. Example:
upper medium dielectric figure 2, lower medium at least dielectric
figure 12
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31854-EN-120329
TS
d1
h1
h2
d2
1
L2
L1
Fig. 2: Interface measurement
1 Reference plane
d1 Distance to the interface (HART value 1)
d2 Distance to the level (HART value 3)
TS Thickness of the upper medium (d1 - d2)
h1 Height - Interface
h2 Height - Level
L1 Lower medium
L2 Upper medium
3 Product description
Output signal
The interface is processed directly by the sensor.
The analogue output (4 … 20 mA) transmits the height of the interface
(h1) in percent. This is also the value that is adjusted.
The display of PLICSCOM and PACTware outputs the distance to the
interface (d1) in m(d).
The HART protocol can transmit the distance to the interface - HART
value 1 (d1) and the distance to the level (d2) - HART value 3.
The values can be processed e.g. with a HART interface module (HIM)
or with a VEGAMET 625. VEGAMET 625 can also generate the
difference out of the two values.
Voltage supply
Four-wire electronics with separate power supply.
The supply voltage range can differ depending on the instrument
version.
The data for power supply are specified in chapter "Technical data".
Measured value transmission is carried out via the 4 … 20 mA/HART
output separate from power supply.
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3 Product description
The background lighting of the indicating and adjustment module is
powered by the sensor. A certain level of operating voltage is required
for this. You can find the exact voltage specifications in chapter
"Technical data".
3.3 Operation
The instrument can be adjusted with the following adjustment media:
l With indicating and adjustment module
l with the suitable VEGA DTM in conjunction with an adjustment
software according to the FDT/DTM standard, e.g. PACTware and
PC
l with manufacturer-specific adjustment programs AMS™ or PDM
l With a HART handheld
3.4 Packaging, transport and storage
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
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 environmentfriendly, 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
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 chapter "Supplement -
Technical data - Ambient conditions"
l Relative humidity 20 … 85 %
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4 Mounting
4.1 General instructions
4 Mounting
Suitability for the process conditions
Mounting position
Welding work
Handling
Moisture
Make sure that all parts of the instrument exposed to the process, in
particular the sensor element, process seal and process fitting, are
suitable for the existing process conditions. These include above all
the process pressure, process temperature as well as the chemical
properties of the medium.
You can find the specifications in chapter "Technical data" and on the
type label.
Select an installation position you can easily reach for mounting and
connecting as well as later retrofitting of an indicating and adjustment
module. The housing can be rotated by 330° without the use of any
tools. You can also install the indicating and adjustment module in four
different positions (each displaced by 90°).
Before beginning the welding work, remove the electronics module
from the sensor. By doing this, you avoid damage to the electronics
through inductive coupling.
With threaded versions, the housing must not be used to screw in the
instrument! Applying tightening forces on the housing can damage its
internal parts.
Use the hexagon for screwing in.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This
applies mainly to outdoor mounting as well as installation in areas
where high humidity is expected (e.g. through cleaning processes) or
on cooled or heated vessels.
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4 Mounting
Fig. 3: Measures against moisture penetration
Measuring range
Pressure
Mounting position
The reference plane for the measuring range of the sensors is the
sealing surface of the thread or flange.
Keep in mind that a min. distance must be maintained below the
reference plane and possibly also at the end of the probe measurement in these areas is not possible (dead band). Particularly
the cable length cannot be used all the way to the end because
measurement in the area of the gravity weight is not possible. These
min. distances (dead bands) are listed in chapter "Technical data".
Keep in mind for the adjustment that the default setting for the
measuring range refers to water.
The process fitting must be sealed if there is gauge or low pressure in
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
The max. permissible pressure is specified in chapter "Technical data"
or on the type label of the sensor.
4.2 Instructions for installation
When mounting the cable and rod versions of VEGAFLEX 67 keep at
least a distance of 300 mm (11.81 in) to other vessel installations or to
the vessel wall.
During operation, the probe must not touch any installations or the
vessel wall. If necessary, fasten the probe end.
In vessels with conical bottom it can be advantageous to mount the
sensor in the center of the vessel, as measurement is then possible
down to the lowest point of the bottom. When using the cable version,
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4 Mounting
keep in mind that measurement down to the tip of the probe is not
possible. The exact value of the min. distance (lower dead band) is
stated in chapter "Technical data".
Fig. 4: Vessel with conical bottom
Inflowing medium
Make sure that the probe is not subjected to strong lateral forces.
Mount VEGAFLEX 67 at a position in the vessel where no
disturbances, e.g. from filling openings, agitators, etc., can occur.
Fig. 5: Lateral load
Extreme vibration caused by the system, e.g. due to agitators or
turbulence in the vessel from inflowing medium, can cause the coax
probe of VEGAFLEX 67 to vibrate in resonance. With coax probes of
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4 Mounting
more than 1 m (3.281 in) length, you must secure the probe by
fastening a suitable isolated brace or guy directly above the end of the
rod.
Fixing
If there is a danger of the probe touching the vessel wall during
operation due to product movements or agitators etc., the measuring
probe should be securely fixed.
In the gravity weight there is a thread (M12), e.g. for a ring bolt
(optional) - (article no. 2.27424).
Make sure that the probe cable is not completely taut. Avoid tensile
loads on the cable.
Avoid undefined cable-vessel connections, i.e. the connection must be
either grounded reliably or isolated reliably. Any deviation from this
requirement can lead to measurement errors.
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5 Connecting to power supply
5 Connecting to power supply
5.1 Preparing the connection
Note safety instructions
Take note of sa-
fety instructions
for Ex applications
Voltage supply
Always keep in mind the following safety instructions:
l Connect only in the complete absence of line voltage
l If overvoltage surges are expected, overvoltage arresters should
be installed
Tip:
We recommend using VEGA overvoltage arresters B63-48 and
ÜSB 62-36G.X.
In hazardous areas you must take note of the respective regulations,
conformity and type approval certificates of the sensors and power
supply units.
Supply voltage and current output are carried on separate two-wire
connection cables if reliable separation is required. The supply voltage
range can differ depending on the instrument version.
The data for power supply are specified in chapter "Technical data".
The standard version can be operated with an earth-connected current
output, the Exd version must be operated with a floating output.
This instrument is designed in protection class I. To maintain this
protection class, it is absolutely necessary that the ground conductor
be connected to the internal ground terminal. Take note of the general
installation regulations.
Always connect the instrument to vessel ground (potential equalisation) or in case of plastic vessels to the next ground potential. For
this purpose there is a ground terminal on the side of the instrument
housing.
Connection cable
Cable screening and
grounding
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For power supply, an approved installation cable with PE conductor is
required.
The 4 … 20 mA current output is connected with standard two-wire
cable without screen. If electromagnetic interference is expected
which is above the test values of EN 61326 for industrial areas,
screened cable should be used.
Use cable with round cross-section. A cable outer diameter of 5 … 9 mm
(0.2 … 0.35 in) ensures the seal effect of the cable gland. If you are
using cable with a different diameter or cross-section, exchange the
seal or use a suitable cable gland.
If screened cable is necessary, connect the cable screen on both ends
to ground potential. In the sensor, 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).
5 Connecting to power supply
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.
Warning:
Within galvanic plants as well as vessels with cathodic corrosion
protection there are considerable potential differences. Considerably
equalisation currents can be caused via the cable scrren when the
screen is earthed on both ends. To avoid this, the cable screen must
only connected to ground potential on one side of the switching
cabinet in such applications. The cable screen must not be connected
to the internal ground terminal in the sensor and the outer ground
terminal on the housing not to the potential equalisation!
Information:
The metallic parts of the instrument (transmitter, process fitting, etc.)
are conductively connected with the inner and outer ground terminal
on the housing. This connection exists either as a direct metallic
contact or via the shielding of the special connection cable on
instruments with external electronics. You can find specifications on
the potential connections within the instrument in chapter "Technical
data".
Installation with
Ex applications
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.
With the Exd version, the minus side of the signal output is galvanically
connected to ground via protective diodes. When connecting the
instrument to a grounded PLC, equalising currents can flow in case of
potential differences which can cause malfunctions. Make sure that
there is sufficient potential equalisation from the system side or realise
the connection via switching amplifier.
5.2 Connection procedure
Proceed as follows:
1 Unscrew the housing cover
2 Loosen compression nut of the cable entry
3 Remove approx. 10 cm (4 in) of the cable mantle (current output),
strip approx. 1 cm (0.4 in) insulation from the ends of the individual
wires
4 Insert the cable into the sensor through the cable entry
5 Lift the opening levers of the terminals with a screwdriver
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5 Connecting to power supply
6 Insert the wire ends into the open terminals according to the wiring
plan
7 Press down the opening levers of the terminals, you will hear the
terminal spring closing
8 Check the hold of the wires in the terminals by lightly pulling on
them
9 Connect the screen to the internal ground terminal, connect the
outer ground terminal to potential equalisation
10 Tighten the compression nut of the cable entry. The seal ring must
completely encircle the cable
11 Connect the lead cable for power supply in the same way
according to the wiring plan, in addition connect the ground
conductor to the inner ground terminal.
12 Screw the housing cover back on
The electrical connection is finished.
Fig. 6: Connection steps 5 and 6
5.3 Wiring plan, double chamber housing
The following illustration apply to non-Ex as well as Ex ia versions. The
Exd version is described in the next subchapter.
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