TDR sensor for continuous level
measurement of bulk solids
VEGAFLEX 82
4 … 20 mA/HART - four-wire
Document ID: 41830
Quick start
Mounting
Electrical connection
Quick start
The quick start procedure enables a quick setup with many applica-
tions. You can nd further information in the respective chapters of the
operating instructions manual.
1. Distance from the metallic vessel wall > 300 mm. Distance from
non-metallic vessel wall > 500 mm. The probe must not touch any
installations or the vessel wall.
2. Place a metal sheet beneath the process tting with non-metal
vessels.
12
Fig. 1: Installation in plastic silo
1 Flange
2 Metal sheet
3. If necessary, fasten probe end.
For further information see chapter "Mounting".
1. Make sure that the power supply corresponds to the specications on the type label.
2. Connect the instrument according to the following illustration
Set parameters
2
4...20mA
power supply
( )
+
(-)
1
2
/L
/N
PE
5
active
67 8
passive
common
IS GND
Fig. 2: Connection compartment with double chamber housing with mains
voltage
For further information see chapter "Connecting to power supply".
For standard applications we recommend selecting the "Quick setup"
in the display and adjustment module.
1. In this menu item you can select the application.
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
41830-EN-130314
Quick start
2. In the menu item "Medium - Dielectric constant" you can dene
the medium type (medium).
3. Carry out the adjustment in the menu items "Min. adjustment" and
"Max. adjustment".
4. A "Linearization" is required for all vessels in which the vessel vol-
ume does not increase linearly with the level - e.g. in a horizontal
cylindrical or spherical tank. Activate the appropriate curve.
5. A "False signal suppression" detects, marks and saves the false
signals so that they are no longer taken into account for level
measurement. We generally recommend a false signal suppression.
Parameterization example
The sensor measures the distance from the sensor (reference plane)
to the product surface.
Fig. 3: Measuring ranges - VEGAFLEX 82
1 Reference plane
2 Probe length L
3 Measuring range
4 Upper dead band (in this area no measurement is possible)
5 Lower dead band (in this area no measurement is possible)
For this adjustment, the distance is entered when the vessel is full
and nearly empty. If these values are not known, an adjustment with
other distances, for example, 10 % and 90 % is also possible. Starting
point for these distance specications is always the seal surface of
the thread or ange.
Further steps
1. In the menu "Additional settings", menu item "Damping" you can
adjust the requested damping of the output signal.
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
1
4
2
3
5
2
1
4
3
5
3
Quick start
2. Select the parameter of the current output and the output characteristics in the menu item "Current output".
You can nd additional information in chapter "Parameter adjustment".
41830-EN-130314
4
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
Contents
1 About this document
1.1 Function ............................................................................. 7
1.2 Target group ....................................................................... 7
1.3 Symbolism used ................................................................. 7
Please note the Ex-specic 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.
Editing status: 2013-03-11
6
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
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 rectication. 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 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
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of batteries and accumulators.
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
7
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 82 is a sensor for continuous level 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 specications 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-specic hazards, e.g. vessel overll or damage to system
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and guidelines. The instrument must only be operated in a
technically awless and reliable condition. The operator is responsible
for the 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.
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 modications are explicitly forbidden.
The safety approval markings and safety tips on the device must also
be observed.
2.5 CE conformity
The device fullls the legal requirements of the applicable EC guidelines. By axing the CE marking, we conrm successful testing of the
product.
You can nd the conformity certicate in the download section of our
homepage.
8
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
41830-EN-130314
2 For your safety
Electromagnetic compatibility
Instruments with plastic housing as well as in four-wire or Ex-d-ia
version are designed for use in an industrial environment. Nevertheless, electromagnetic interference from electrical conductors and
radiated emissions must be taken into account, as is usual with a
class A instrument according to EN 61326-1. If the instrument is used
in a dierent environment, the electromagnetic compatibility to other
instruments must be ensured by suitable measures.
2.6 NAMUR recommendations
NAMUR is the automation technology user association in the process
industry in Germany. The published NAMUR recommendations are
accepted as the standard in eld instrumentation.
The device fullls the requirements of the following NAMUR recom-
mendations:
NE 21 – Electromagnetic compatibility of equipment
•
NE 43 – Signal level for malfunction information from measuring
•
transducers
NE 53 – Compatibility of eld devices and display/adjustment
•
components
NE 107 – Self-monitoring and diagnosis of eld devices
•
For further information see www.namur.de.
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 protection. The environment management system is certied according
to DIN EN ISO 14001.
Please help us fulll this obligation by observing the environmental
instructions in this manual:
Chapter "Packaging, transport and storage"
•
Chapter "Disposal"
•
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VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
9
3 Product description
Type plate
3 Product description
3.1 Conguration
The nameplate contains the most important data for identication and
use of the instrument:
1
2
3
4
5
6
7
8
9
10
Fig. 4: Layout of the type label (example)
1 Instrument type
2 Product code
3 Approvals
4 Power supply and signal output, electronics
5 Protection rating
6 Probe length
7 Process and ambient temperature, 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 Note to observe the instrument documentation
15 NotiedauthorityforCEmarking
16 Approval directive
16
15
14
13
12
11
Serial number
Scope of this operating
instructions manual
10
With the serial number of the instrument on the type label you have
access to the following data on our homepage:
Article number of the instrument (HTML)
•
Delivery date (HTML)
•
Order-specic instrument features (HTML)
•
Operating instructions at the time of shipment (PDF)
•
Order-specic sensor data for an electronics exchange (XML)
•
Test certicate "Measuring Accuracy" (PDF)
•
For this purpose, move to www.vega.com and "VEGA Tools".
This operating instructions manual applies to the following instrument
versions:
Hardware from 1.0.0
•
Software from 1.0.0
•
Only for instrument versions without SIL qualication
•
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
41830-EN-130314
3 Product description
Versions
Scope of deliv
Application ar
Functional principle level measurement
ery
ea
The instrument can be supplied in two dierent electronics versions.
Each electronics version can be identied via the product code on the
type label as well as on the electronics.
Standard electronics with operating voltage 90 … 253 V AC;
•
50/60 Hz: Typ FX80B.Standard electronics with supply voltage 9.6 … 48 V DC;
•
20 … 42 V AC: Type FX80I.-
The scope of delivery encompasses:
Sensor
•
Documentation
•
– this operating instructions manual
– Test certicate measuring accuracy (optional)
– Operating instructions manual "Display and adjustment mod-
ule" (optional)
– Supplementary instructions "GSM/GPRS radio module"
(optional)
– Supplementary instructions manual "Heating for display and
adjustment module" (optional)
– Supplementary instructions manual "Plug connector for con-
tinuously measuring sensors" (optional)
– Ex-specic "Safety instructions" (with Ex versions)
– if necessary, further certicates
3.2 Principle of operation
The VEGAFLEX 82 is a level sensor with cable or rod probe for continuous level measurement, suitable for applications in bulk solids.
High frequency microwave pulses are guided along a steel cable or
a rod. Upon reaching the product surface, the microwave pulses are
reected. The running time is evaluated by the instrument and outputted as level.
Probe end tracking
To increase sensitivity, the probe is equipped with probe end tracking.
In products with a low dielectric constant, this function is very helpful.
This is the case, for example, in plastic granules, packing chips or in
uidized vessels.
Between a dielectric constant of 1.5 and 3, the function switches on, if
required. As soon as the level echo can no longer be detected, probe
end tracking is automatically activated. The measurement is contin-
ued with the last calculated dielectric constant.
The accuracy thus depends on the stability of the dielectric constant.
If you measure a medium with a dielectric constant below 1.5, probe
end tracking is always active. In this case, you have to enter the
dielectric constant of the medium. A stable dielectric constant is very
important here.
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
11
3 Product description
Packaging
T
ranspor
t
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 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.
Transport inspection
Storage
Storage and transport
temperature
Display and adjustment
module
Interface adapter
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:
Not in the open
•
Dry and dust free
•
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 display and adjustment module PLICSCOM is used for measured
value indication, adjustment and diagnosis. It can be inserted into the
sensor or the external display and adjustment unit and removed at
any time.
You can nd further information in the operating instructions "Display
and adjustment module PLICSCOM" (Document-ID 27835).
The interface adapter VEGACONNECT enables the connection of
communication-capable instruments to the USB interface of a PC. For
parameter adjustment of these instruments, an adjustment software
such as PACTware with VEGA-DTM is required.
You can nd further information in the operating instructions "Interface
adapter VEGACONNECT" (Document-ID 32628).
41830-EN-130314
External display and
adjustment unit
12
VEGADIS 61 is an external display and adjustment unit for sensors
with single chamber housing and Ex-d double chamber housing.
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
3 Product description
It is suitable for measured value indication and adjustment of plics®
sensors and is connected to the sensor with a four-wire standard
cable up to 50 m (164 ft) long.
You can nd further information in the operating instructions "VE-
GADIS 61" (Document-ID 27720).
External display and adjustment unit with HART
protocol
External r
adio unit
Protective cover
Flanges
Electronics module
VEGADIS 62 is suitable for measured value indication and adjustment
of sensors with HART protocol. It is looped into the 4 … 20 mA/HART
signal cable.
You can nd further information in the operating instructions "VEGADIS 62" (Document-ID 36469).
The PLICSMOBILE T61 is an external GSM/GPRS radio unit for
transmission of measured values and for remote parameter adjustment of plics
®
sensors. The adjustment is carried out via PACTware/
DTM by using the integrated USB connection.
You can nd further information in the supplementary instructions
"PLICSMOBILE T61" (Document-ID 36849).
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 dierent versions according to the
following standards: DIN 2501, EN 1092-1, 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).
The electronics module VEGAFLEX series 80 is a replacement part
for TDR sensors of VEGAFLEX series 80. There is a dierent version
available for each type of signal output.
You can nd further information in the operating instructions manual
"Electronics module VEGAFLEX series 80".
Display and adjustment
module with heating
The display and adjustment module can be optionally replaced by a
display and adjustment module with heating function.
You can hence use the display and adjustment module in an ambient
temperature range of -40 … 70 °C.
You can nd further information in the operating instructions "Display
and adjustment module with heating" (Document-ID 31708).
Rod extension
If you are using an instrument with rod version, you can extend the
rod probe individually with curved segments and rod extensions of
dierent lengths.
All extensions used must not exceed a total length of 6 m (19.7 ft).
The extensions are available in the following lengths:
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
13
3 Product description
Rod: ø 16 mm (0.63 in)
Basic segments: 20 … 5900 mm (0.79 … 232 in)
•
Rod segments: 20 … 5900 mm (0.79 … 232 in)
•
Curved segments: 100 x 100 mm (3.94 … 3.94 in)
•
You can nd further information in the operating instructions manual
"Rod extension VEGAFLEX series 80".
Spacer
If you mount the VEGAFLEX 82 in a bypass tube or standpipe, you
have to avoid contact to the bypass tube by using a spacer at the
probe end.
You can nd further information in the operating instructions manual
"Bypass tube VEGAPASS 81".
14
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
Screwing in
4 Mounting
4 Mounting
4.1 General instructions
With instruments with threaded process tting, suitable tools must be
applied for tightening the hexagon.
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
Moisture
Protective caps
Suitability for the process
conditions
Installation position
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 o. This applies mainly to:
outdoor mounting
•
installations in areas where high humidity is expected (e.g. through
•
cleaning processes)
installations on cooled or heated vessels
•
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory. The
openings for the cable glands are therefore covered with red protective caps as transport protection.
Prior to setup you have to replace these protective caps with approved cable glands or close the openings with suitable blind plugs.
The suitable cable glands and blind plugs come with the instrument.
Make sure that all parts of the instrument exposed to the process, in
particular the active measuring component, process seal and process
tting, 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 nd the specications in chapter "Technical data" and on the
nameplate.
4.2 Instructions for installation
Mount VEGAFLEX 82 in such a way that the distance to vessel installations or to the vessel wall is at least 300 mm (12 in). In non-metallic
vessels, the distance to the vessel wall should be at least 500 mm
(19.7 in).
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
nearly down to the lowest point of the bottom. Keep in mind that
measurement all the way down to the tip of the probe may not be pos-
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
15
4 Mounting
sible. The exact value of the min. distance (lower dead band) is stated
in chapter "Technical data".
Fig. 5: Vessel with conical bottom
Type of vessel
Plastic vessel/Glass vessel
The guided microwave principle requires a metal surface on the process tting. Therefore use in plastic vessels etc. an instrument version
with ange (from DN 50) or place a metal sheet (ø > 200 mm/8 in)
beneath the process tting when screwing it in.
Make sure that the plate has direct contact with the process tting.
When installing rod or cable probes without metal vessel wall, e.g.
in plastic vessels, the measured value can be inuenced by strong
electromagnetic elds (emitted interference according to EN 61326:
class A).
Use a probe in coax version for applications in liquids.
12
Fig. 6: Installation in non-metal vessel
1 Flange
2 Metal sheet
41830-EN-130314
16
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
4 Mounting
dh
Concrete vessel
When installed in thick concrete ceilings, VEGAFLEX 82 should be
mounted front ush to the lower edge. In concrete silos, the distance
to the wall should be at least 500 mm (20 in).
ø >160mm
(ø >6.3")
Fig. 7: Installation in concrete silo
Socket
If possible, avoid sockets. Mount the sensor ush with the vessel top.
If this is not possible, use short sockets with small diameter.
Higher sockets or sockets with a bigger diameter can generally be
used. They simply increase the upper blocking distance. Check if this
is relevant for your measurement.
In such cases, always carry out a false signal suppression after instal-
lation. You can nd further information under "Setup procedure".
Fig. 8: Mounting socket
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
_
DN40 ... DN150
> DN150 ... DN200
d
h
<
150
_
<
100
17
4 Mounting
When welding the socket, make sure that the socket is ush to the
vessel top.
12
Fig.9:Socketmustbeinstalledush
1 Unfavourable installation
2 Socketush-optimuminstallation
Welding work
Inowingmedium
Measuring range
Before beginning the welding work, remove the electronics module
from the sensor. By doing this, you avoid damage to the electronics
through inductive coupling.
Do not mount the instruments in or above the lling stream. Make sure
that you detect the product surface, not the inowing product.
The reference plane for the measuring range of the sensors is the
sealing surface of the thread or ange.
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). The length of the cable
can be used all the way to the end only when measuring conductive
41830-EN-130314
18
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
4 Mounting
products. These blocking distances for dierent mediums are listed
in chapter "Technical data". Keep in mind for the adjustment that the
default setting for the measuring range refers to water.
Pressure
Fixing
R
od extensions
The process tting 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 specied in chapter "Technical
data" or on the type label of the sensor.
If there is a danger of the cable probe touching the vessel wall during
operation due to product movements or agitators etc., the measuring
probe should be securely xed.
In the gravity weight there is an internal thread (M12), e.g. for an eye-
bolt (optional) - (article no. 2.27423).
Make sure that the probe cable is not completely taut. Avoid tensile
loads on the cable.
Avoid undened vessel connections, i.e. the connection must be
either grounded reliably or isolated reliably. Any undened change of
this requirement can lead to measurement errors.
In case of dicult installation conditions, for example in a socket, the
probe can be adapted respectively with a rod extension.
Let the probe length determine automatically by the instrument to
compensate the resulting running time changes.
You can nd further information in the supplementary instructions of
the rod extension.
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VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
19
5 Connecting to power supply
Safety instructions
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
Voltage supply via mains
voltage
Voltage supply via low
voltage
Connection cable
In this case, the instrument is designed in protection class II. 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.
Supply voltage and current signal are carried on separate connection
cables if reliable separation is required. The supply voltage range can
dier depending on the instrument version.
The data for power supply are specied in chapter "Technical data".
In this case, the instrument is designed in protection class II. Gener-
ally connect the instrument to vessel ground (potential equalization)
or with plastic vessels to the next ground potential. For this purpose, a
ground terminal is located laterally on the instrument housing.
An approved, three-wire installation cable with PE conductor is
required for voltage supply with mains voltage.
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 61326-1 for industrial areas,
screened cable should be used.
For instruments with housing and cable gland, use cable with round
cross-section. To ensure the seal eect of the cable gland (IP protection rating), you have to check for which cable outer diameter the
cable gland is suitable.
5 … 9 mm (0.20 … 0.35 in)
•
6 … 12 mm (0.24 … 0.47 in)
•
10 … 14 mm (0.40 … 0.55 in)
•
Use a cable gland tting the cable diameter.
Cable gland ½ NPT
Cable screening and
grounding
20
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".
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).
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
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
41830-EN-130314
Connection technology
5 Connecting to power supply
suppressed, but the protective eect against high frequency interfer-
ence signals remains.
Warning:
Signicant potential dierences exist inside galvanization plants as
well as on vessels with cathodic corrosion protection. Considerable
equalisation currents can ow over the cable screen if the screen is
grounded on both ends.
To avoid this in such applications, the cable screen must be connect-
ed to ground potential only at one end (in the switching cabinet). The
cable screen must not be connected to the internal ground terminal in
the sensor and the outer ground terminal on the housing must not be
connected to the potential equalisation!
Information:
The metallic parts of the instrument (process tting, transmitter, concentric tube, etc.) are conductively connected with the inner and outer
ground terminal on the housing. This connection exists either directly
via connecting metallic parts or, in case of instruments with external
electronics, via the screen of the special connection cable.
You can nd specications on the potential connections inside the
instrument in chapter "Technical data".
5.2 Connection
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 inserting the terminal block again, you should hear it
snap in.
Connection procedure
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
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
21
5 Connecting to power supply
Fig. 11: 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
inserted directly into the terminal openings. In case of exible cores
without end sleeves, press the terminal head 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. Place probably existing display and adjustment module back on
11. Screw the housing cover back on
The electrical connection is hence nished.
22
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
2
Electronics compartment
Connection compartment
with mains voltage
5 Connecting to power supply
5.3 Wiring plan, double chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-d
1 Internal connection to the connection compartment
2 For display and adjustment module or interface adapter
Information:
The connection of an external display and adjustment unit is not possible with this double chamber housing.
567
4...20mA
8
Fig. 13: Connection compartment with double chamber housing with mains
voltage
TerminalFunctionPolarity
1Voltage supply+/L
2Voltage supply-/N
5
6
7Mass - output-
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
power supply
( )
+
(-)
1
2
/L
/N
PE
5
4 … 20 mA output (active)+
4 … 20 mA output (passive)+
active
passive
67 8
common
IS GND
23
5 Connecting to power supply
Connection compartment
w v
with lo
oltage
TerminalFunctionPolarity
8Function ground with installa-
tion according to CSA
4...20mA
power supply
( )
+
(-)
1
2
/L
/N
Fig. 14: Connection compartment with double chamber housing with low voltage
TerminalFunctionPolarity
1Voltage supply+/L
2Voltage supply-/N
5
6
7Mass - output-
8Function ground with installa-
4 … 20 mA output (active)+
4 … 20 mA output (passive)+
tion according to CSA
active
5
common
passive
67 8
IS GND
5.4 Switch-on phase
After connecting the instrument to power supply or after a voltage
recurrence, the instrument carries out a self-check for approx. 30 s:
Internal check of the electronics
•
Indication of the instrument type, hardware and software version,
•
measurement loop name on the display or PC
Indication of the status message "F 105 Determine measured
•
value" on the display or PC
The output signal jumps to the set error current
•
As soon as a plausible measured value is found, the corresponding
current is outputted to the signal cable. The value corresponds to the
actual level as well as the settings already carried out, e.g. factory
setting.
24
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
6 Set up with the display and adjustment module
6 Set up with the display and adjustment
module
6.1 Insert display and adjustment module
The display and adjustment module can be inserted into the sensor
and removed any time. Four positions displaced by 90° can be selected. It is not necessary to interrupt the power supply.
Proceed as follows:
1. Unscrew the housing cover
2. Place the display and adjustment module in the requested position onto the electronics and turn to the right until it snaps in
3. Screw housing cover with inspection window tightly back on
Removal is carried out in reverse order.
The display and adjustment module is powered by the sensor, an additional connection is not necessary.
Fig. 15: Insertion of the display and adjustment module with single chamber
housing into the electronics compartment
41830-EN-130314
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
25
6 Set up with the display and adjustment module
Fig. 16: Insertion of the display and adjustment module with double chamber
housing
1 In the electronics compartment
2 In the connection compartment (with Ex-d-ia version not possible)
Note:
If you intend to retrot the instrument with a display and adjustment
module for continuous measured value indication, a higher cover with
an inspection glass is required.
6.2 Adjustment system
12
Key functions
26
Fig. 17: Display and adjustment elements
1 LC display
2 Adjustment keys
[OK] key:
•
– Move to the menu overview
– Conrm selected menu
– Edit parameter
VEGAFLEX 82 • 4 … 20 mA/HART - four-wire
1
2
41830-EN-130314
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