VEGAFLEX-81-83-86
Product Information
Guided Wave Radar
Level and interface measurement in liquids
VEGAFLEX 81, 83, 86
Contents
Contents
1
Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Type overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Instrument selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Selection criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
Housing overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7
Electronics - 4 … 20 mA/HART - two-wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8
Electronics - 4 … 20 mA/HART - four-wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9
Electronics - Profibus PA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10 Electronics - Foundation Fieldbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11 Electronics, Modbus, Levelmaster protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
12 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
13 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Please note the Ex specific safety information which you can find on our homepage www.vega.com/downloads under "Approvals" and which
comes with every instrument. In hazardous areas you should take note of the corresponding regulations, conformity and type approval
certificates of the sensors and power supply units. The sensors must only be operated on intrinsically safe circuits. The permissible electrical
values are stated in the certificate.
2
Guided Wave Radar – Level and interface measurement in liquids
46597-EN-131120
Take note of safety instructions for Ex applications
Measuring principle
1
Measuring principle
Measuring principle
High frequency microwave pulses are coupled onto a cable or rod and
guided along the probe. The pulse is reflected by the product surface. The
time from emission to reception of the signals is proportional to the distance of the level.
The instrument is supplied with the probe length (0 % and 100 %) already
adjusted. In most cases setup on site is not required. In any case, you set
up VEGAFLEX without medium. The shortenable, bare cable and rod
versions can be simply adapted to the local requirements, if necessary.
1
1
4
4
Level measurement in liquids
Density fluctuations, steam generation or strong pressure and temperature fluctuations do not influence the measuring result. Also buildup on
the probe or the vessel wall do not influence the measurement. This
makes VEGAFLEX simple in planning.
2
An ideal application is level measurement in a bypass tube or standpipe,
because even products with a dielectric constant below 1.6 can be reliably measured. Weld seams, buildup and corrosion inside the tube do not
influence the accuracy of the level measurement. Even if overfilling up to
the process fitting occurs, the measurement is reliable. VEGAFLEX 81
also offers a special solution for ammonia applications.
Different probes are available
l Cable probes - for applications in high vessels up to 75 m (246 ft)
l Rod probes for applications in vessels up to 6 m (20 ft)
l Coax probes for application in low viscosity liquids, with vessel installations, in vessels up to 6 m (20 ft) high
The measured quantity is the distance between process fitting of the
sensor and product surface. Depending on the sensor version, the reference plane is the seal surface on the hexagon or the lower side of the
flange.
2
3
3
5
5
Fig. 3: Measuring ranges of VEGAFLEX - coax version
1
2
3
4
5
Reference plane
Probe length L
Measuring range
Upper dead zone
Lower dead zone
Interface measurement in liquids
Non-conductive products only partly reflect the energy of microwaves.
The non-reflected energy passes through the medium and is reflected at
the phase boundary to a second liquid. Interface measurement takes
advantage of this effect. You can select this function on VEGAFLEX via
the adjustment tools.
You thus get a reliable total level as well as the level of the lower medium in
your vessel.
1
1
4
2
4
2
3
3
5
Typical applications are interface measurements in storage tanks, separators and pump sumps. VEGAFLEX normally determines the level of
water underneath a non-conductive medium. Since the instrument is independent of the density of the medium, a reliable, maintenance-free and
precise measurement can be realised.
By simply switching over, the instruments can be used for interface measurement of liquids.
Thanks to its guide tube, the coax version is not influenced by vessel
installations and reliably measures products with low dielectric constant.
Therefore this instrument version is be preferred.
Prerequisites for interface measurement
5
Fig. 1: Measuring ranges of the VEGAFLEX cable and rod versions
46597-EN-131120
1
2
3
4
5
Reference plane
Probe length L
Measuring range
Upper dead zone (dead band)
Lower dead zone
Upper medium (L2)
l The upper medium must not be conductive
l The dielectric constant of the upper medium must be known
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 The layer can only be measured if it has a thickness ≥ 100 mm (4 in)
l Clear separation from the lower medium, no emulsion phase, no detritus layer
l If possible, no foam on the surface
Lower medium (L1)
l The dielectric constant must be 10 higher than the dielectric constant
of the upper medium, preferably electrically conductive. Example:
upper medium dielectric constant 2, lower medium at least dielectric
constant 12
Guided Wave Radar – Level and interface measurement in liquids
3
Measuring principle
1
d2
d1
L2
h2
TS
L1
h1
Fig. 5: Interface measurement
1
d1
d2
TS
h1
h2
L1
L2
Reference plane
Distance to the interface (HART value 1 or Primary Value)
Distance to the level (HART value 3 or Third Value)
Thickness of the upper medium (d1 - d2)
Height - Interface
Height - Level
Lower medium
Upper medium
46597-EN-131120
4
Guided Wave Radar – Level and interface measurement in liquids
Type overview
2
Type overview
VEGAFLEX 81
Cable version
VEGAFLEX 81
Rod version
VEGAFLEX 81
Coax version
Applications
Storage tanks, liquids with agitated
surface
Storage tanks, liquids with smooth
surface
Storage tanks, liquids with low dielectric constant, vessel with installations
Max. measuring range
75 m (246 ft)
6 m (19.69 ft)
6 m (19.69 ft)
Probe
Cable probe
ø 2 mm
ø 4 mm
Rod probe
ø 8 mm
ø 12 mm
Coax probe
ø 21.1 mm
ø 42.2 mm
Process fitting
Thread from G¾, ¾" NPT or flanges Thread from G¾, ¾" NPT or flanges Thread from G¾, ¾" NPT or flanges
from DN 25, 1"
from DN 25, 1"
from DN 25, 1"
Process temperature
-40 … +200 °C (-40 … +392 °F)
-40 … +200 °C (-40 … +392 °F)
-40 … +200 °C (-40 … +392 °F)
Process pressure
-1 … +40 bar/-100 … +4000 kPa (-14.5 … +580 psig)
-1 … +40 bar/-100 … +4000 kPa (-14.5 … +580 psig)
-1 … +40 bar/-100 … +4000 kPa (-14.5 … +580 psig)
Measuring accuracy
±2 mm
±2 mm
±2 mm
Signal output
l
l
l
l
l
Indication/Adjustment
l
l
l
l
Approvals
l
l
l
l
l
l
PLICSCOM
PACTware
VEGADIS 81
VEGADIS 62
ATEX
IEC
Shipbuilding
Overfill protection
FM
CSA
Gost
46597-EN-131120
l
4 … 20 mA/HART two-wire
4 … 20 mA/HART - four-wire
Profibus PA
Foundation Fieldbus
Modbus, Levelmaster protocol
Guided Wave Radar – Level and interface measurement in liquids
5
Type overview
VEGAFLEX 83
Cable version
Applications
Aggressive and corrosive liquids
VEGAFLEX 83
Rod version
Aggressive and corrosive liquids
VEGAFLEX 83
Rod version - Foodstuffs
Hygienic applications in the food
processing and pharmaceutical industry
Max. measuring range
32 m (105 ft)
4 m (13.12 ft)
4 m (13.12 ft)
Probe
Cable probe
ø 4 mm
PFA coated
Rod probe
ø 10 mm
PFA coated
Rod probe
ø 8 mm
Polished version (Basle Standard)
Process fitting/Material
Flanges from DN 25, 1" or hygienic
connections
PTFE-TFM 1600
Flanges from DN 25, 1" or hygienic
connections
PTFE-TFM 1600
Hygienic fittings
Process temperature
-40 … +150 °C (-40 … +392 °F)
-40 … +150 °C (-40 … +302 °F)
-20 … +150 °C (-4 … +302 °F)
Process pressure
-0.5 … +16 bar/-50 … +1600 kPa (-7 … +232 psig)
-0.5 … +16 bar/-50 … +1600 kPa (-7 … +232 psig)
-1 … +40 bar/-100 … +4000 kPa (-14.5 … +580 psig)
Deviation
±2 mm
±2 mm
±2 mm
Signal output
l
l
l
l
l
Indication/Adjustment
l
l
l
l
Approvals
l
l
l
l
l
l
l
4 … 20 mA/HART two-wire
4 … 20 mA/HART - four-wire
Profibus PA
Foundation Fieldbus
Modbus, Levelmaster protocol
PLICSCOM
PACTware
VEGADIS 81
VEGADIS 62
ATEX
IEC
Shipbuilding
Overfill protection
FM
CSA
Gost
46597-EN-131120
6
Guided Wave Radar – Level and interface measurement in liquids
Type overview
VEGAFLEX 86
Cable version
VEGAFLEX 86
Rod version
VEGAFLEX 86
Coax version
Applications
High temperature applications
High temperature applications
High temperature applications
Max. measuring range
75 m (246 ft)
6 m (19.69 ft)
6 m (19.69 ft)
Probe
Cable probe
ø 2 mm
ø 4 mm
Rod probe
ø 16 mm
Coax probe
ø 42.2 mm
Process fitting
Thread G1½ or flanges from DN 40,
2"
Thread G1½ or flanges from DN 40,
2"
Thread G1½ or flanges from DN 40,
2"
Process temperature
-196 … +450 °C (-321 … +842 °F)
-196 … +450 °C (-321 … +842 °F)
-196 … +450 °C (-321 … +842 °F)
Process pressure
-1 … +400 bar/-100 … +40000 kPa
(-14.5 … +5800 psig)
-1 … +400 bar/-100 … +40000 kPa
(-14.5 … +5800 psig)
-1 … +400 bar/-100 … +40000 kPa
(-14.5 … +5800 psig)
Deviation
±2 mm
±2 mm
±2 mm
Signal output
l
l
l
l
l
Indication/Adjustment
l
l
l
l
Approvals
l
l
l
l
l
l
PLICSCOM
PACTware
VEGADIS 81
VEGADIS 62
ATEX
IEC
Shipbuilding
Overfill protection
FM
CSA
Gost
46597-EN-131120
l
4 … 20 mA/HART two-wire
4 … 20 mA/HART - four-wire
Profibus PA
Foundation Fieldbus
Modbus, Levelmaster protocol
Guided Wave Radar – Level and interface measurement in liquids
7
Instrument selection
3
Instrument selection
Application areas
VEGAFLEX 81
VEGAFLEX 81 is suitable for applications with liquids in small vessels
under ordinary process conditions. There are application possibilities in
nearly all areas of industry.
Through a large selection of gravity weights, the VEGAFLEX 81 can be
also used in standpipes and bypass tubes.
VEGAFLEX 83
The PFA-coated VEGAFLEX 83 is suitable for measurement in aggressive liquids or applications with special hygienic requirements. Application possibilities can be found in the chemical industry as well as in the
food processing and pharmaceutical sector.
The polished version of VEGAFLEX 83 is particularly suitable for level
measurement under hygienic conditions in, for example, vessels with
foodstuffs.
1
Fig. 7: Position of the spacer
VEGAFLEX 86
1
VEGAPULS 86 is suitable for high temperature applicatons in liquids, e.g.
in storage tanks and process vessels. The application possibilities can be
found in the chemical industry, the environmental and recycling technology as well as in the petrochemical industry.
Spacer
Note:
Measurement in a standpipe is not recommended for extremely
adhesive products.
Applications
Interface measurement
Level measurement in conical vessels
Through simple switching, all instruments of the VEGAFLEX 80 series
can also measure liquid interfaces. Typical applications are the measurement of oil or solvents on water. The measuring principle is maintenancefree because no moving parts are used. VEGAFLEX operates completely
independent of the density of the product. This means reliable measured
values without additional effort for correction.
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 vessel bottom.
Prerequisites for interface measurement
l The upper medium must not be conductive
l The dielectric constant of the upper medium must be known (input
required). Min. dielectric constant: rod version 1.7.
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 to the lower medium, no emulsion phase, no detritus
layer
l If possible, no foam on the surface
Lower medium (L1)
l
Fig. 6: Vessel with conical bottom
The dielectric constant must be 10 higher than the dielectric constant
of the upper medium, preferably electrically conductive. Example:
upper medium dielectric constant 2, lower medium at least dielectric
constant 12
Measurement in a standpipe or bypass tube
When a standpipe or bypass tube is used in a vessel, the influences from
vessel installations and turbulence can be excluded. In such case, measurement of products with low dielectric values (εr value ≥ 1.6) is possible.
In very adhesive products, measurement in a standpipe or bypass tube is
not recommended.
If chemical resistance is not a problem, we recommend using a metal tube
to improve measurement reliability.
8
Guided Wave Radar – Level and interface measurement in liquids
46597-EN-131120
If VEGAFLEX is used in standpipes or bypass tubes, contact with the tube
wall should be avoided. We offer spacers as accessories for fastening the
probe in the middle of the tube.
Instrument selection
1
d2
d1
L2
h2
TS
L1
1
h1
2
Fig. 10: Socket must be installed flush
Fig. 8: Interface measurement
1
d1
d2
TS
h1
h2
L1
L2
1
2
Reference plane
Distance to the interface (HART value 1)
Distance to the level (HART value 3)
Thickness of the upper medium (d1 - d2)
Height - Interface
Height - Level
Lower medium
Upper medium
Unfavourable installation
Socket flush - optimum installation
Plastic vessel/Glass vessel
The guided microwave principle requires a metal surface on the process
fitting. Therefore use in plastic vessels etc. an instrument version with
flange (from DN 50) or place a metal sheet (ø > 200 mm/8 in) beneath
the process fitting when screwing it in.
Socket
If possible, avoid sockets. Mount the sensor flush 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 can, however, increase the upper blocking distance (dead band).
Check if this is relevant for your measurement.
Make sure that the plate has direct contact with the process fitting.
When installing rod or cable probes in vessels without metal walls, e.g. in
plastic vessels, the measured value can be influenced by strong electromagnetic fields (emitted interference according to EN 61326: class A). In
this case, use a probe with coaxial version.
In such cases, always carry out a false signal suppression after installation. You can find further information under "Setup procedure".
1
d
d
h
_ 150
<
_ 100
<
h
DN40 ... DN150
> DN150 ... DN200
2
Fig. 11: Installation in non-metallic vessel
1
2
Flange
Metal sheet
Fig. 9: Mounting socket
When welding the socket, make sure that the socket is flush with the
vessel top.
Ammonia applications
For applications in ammonia, a special, gas-tight instrument version of
VEGAFLEX 81 as coax probe is available.
For this special application, the instrument is equipped with high resistant
seals of elastomer-free materials. The instrument seal and the "Second
Line of Defense" are made of borosilicate glass GPC 540.
46597-EN-131120
Steam boiler applications
Vapours, superimposed gases, high pressures and temperature differences can change the spreading speed of radar impulses.
For automatic correction of these deviations, the VEGAFLEX can be optionally equipped with a running time correction over the reference distance. Hence the probe can execute an automatic running time correction.
The reference point must hence not be overfilled. The upper dead band is
hence 450 mm (17.7 in).
Guided Wave Radar – Level and interface measurement in liquids
9
Instrument selection
1
1
7
7
6
6
2
2
4
4
3
3
5
5
Fig. 12: Measuring ranges - VEGAFLEX with steam compensation
1
2
3
4
5
6
7
Reference plane
Probe length L
Measuring range
Upper dead band
Lower dead band
Additional upper dead band by steam compensation
Reference measurement distance to steam compensation
Autoclaved version
For use in an autoclave, e.g. for sterilization, the polished version of
VEGAFLEX is available as autoclavable version.
Hence you can separate the housing from the process fitting.
The side of the process fitting is provided with a cover after the housing is
removed.
ø 54 mm
(2.13")
2
65,3 mm
(2.57")
112 mm
(4.84")
183 mm
(7.20")
After autoclaving, attach the housing again and the instrument is immediately ready for operation.
3
1
L
øw
øw
ø 50,5
ø 64
ø 91
46597-EN-131120
DIN DN25 DN32 DN40 / 1" 1 1/2"
DIN DN50 / 2"
DIN DN65 / 3"
Fig. 14: Autoclaved version
1
2
3
10
Groove nut
Process fitting
Cover with groove nut
Guided Wave Radar – Level and interface measurement in liquids
Selection criteria
4
Selection criteria
● optimum suitability
VEGAFLEX 83
VEGAFLEX
81
Vessel
Process
Process fitting
Probe
VEGAFLEX 86
Cable
Rod
Coax
Cable
Rod
Food
Cable
Rod
Coax
Vessels < 6 m
●
●
●
●
●
●
●
●
●
High vessels > 6 m
●
–
–
●
–
–
●
–
–
Non-metallic vessels
○
○
○
○
○
○
○
○
○
Measurement in a standpipe or bypass tube
●
●
○
–
○
●
●
●
○
Aggressive liquids
–
–
–
●
●
–
–
–
–
Bubble or foam generation
●
●
●
●
●
●
●
●
●
Wave movements at the surface
●
●
●
●
●
●
●
●
●
Steam or condensation
●
●
●
●
●
●
●
●
●
Buildup
●
●
–
●
●
●
●
●
–
Changing density
●
●
●
●
●
●
●
●
●
Ammonia application
–
–
●
–
–
–
–
–
–
High temperatures > 200 °C
–
–
–
–
–
–
●
●
●
Pressures up to 400 bar
–
–
–
–
–
–
●
●
●
Hygienic applications
–
–
–
○
○
●
–
–
–
Narrow space above the vessel
●
○
–
●
–
–
●
○
–
Steam boiler application
–
–
–
–
–
–
–
–
●
Threaded fittings
●
●
●
–
–
–
●
●
●
Flange connections
●
●
●
●
●
●
●
●
●
Hygienic fittings
–
–
–
●
●
●
–
–
–
Stainless steel
●
●
●
–
–
●
●
●
●
PFA coating
–
–
–
●
●
–
–
–
–
Polished (Basle Standard)
–
–
–
–
–
●
–
–
–
Probe can be shortened
●
●
–
–
–
–
●
●
–
Chemical
●
●
●
●
●
●
●
●
●
Power generation
●
●
●
○
○
–
●
●
●
Foodstuffs
–
–
–
●
●
●
–
–
–
Offshore
●
●
●
○
○
–
●
●
●
Petrochemical
●
●
●
○
○
–
●
●
●
Pharmaceutical
–
–
–
●
●
●
–
–
–
Shipbuilding
●
○
○
–
–
–
●
○
○
Environment and recycling industry
●
●
●
●
●
●
●
●
●
Water
●
●
○
●
●
●
○
○
○
Waste water
○
○
–
○
○
○
○
○
–
46597-EN-131120
Industry
– not recommended
○ possible with limitations
Guided Wave Radar – Level and interface measurement in liquids
11
Housing overview
5
Housing overview
Plastic PBT
Protection rating
IP 66/IP 67
IP 66/IP 67
Version
Single chamber
Double chamber
Application area
Industrial environment
Industrial environment
Protection rating
IP 66/IP 67, IP 66/IP 68 (1 bar)
IP 66/IP 67, IP 66/IP 68 (1 bar)
Version
Single chamber
Double chamber
Application area
Industrial environment with increased
mechanical stress
Industrial environment with increased
mechanical stress
Aluminium
Stainless steel 316L
Protection rating
IP 66/IP 67
IP 66/IP 67, IP 66/IP 68 (1 bar)
IP 66/IP 67, IP 66/IP 68 (1 bar)
Version
Single chamber, electropolished
Single chamber, precision casting
Double chamber, precision casting
Application area
Aggressive environment, food processing, pharmaceutical
Aggressive environment, extreme me- Aggressive environment, extreme mechanical stress
chanical stress
46597-EN-131120
12
Guided Wave Radar – Level and interface measurement in liquids
Mounting
6
Mounting
Mounting examples
Tanks with foodstuffs
The following illustrations show mounting examples and measurement
setups.
Storage vessels
Fig. 16: Level measurement in a vessel with foodstuffs with VEGAFLEX 83
Fig. 15: Level measurement in a storage vessel with VEGAFLEX 81
The guided microwave principle is ideal for level measurement in storage
vessels. The sensor can be set up without filling or adjustment with medium.
Cable and rod probes are available for different lengths and loads.
The coax version is especially suitable for low viscosity liquids with low
dielectric constant. This also applies when the requirements on the accuracy of the measurement are very high.
The measurement is independent of product characteristics such as density, temperature, overpressure, foam, dielectric constant and buildup.
The fully PFA insulated VEGAFLEX 83 is ideal for level measurement in
vessels in the food processing and pharmaceutical industries. The sensor
can be set up without filling or adjustment with medium. Fully insulated rod
probes are available in lengths up to 4 m (13 ft) and cable probes up to
32 m (105 ft).
The wetted parts are made of the food safe plastics PFA and TFM-PTFE.
The measurement is unaffected by product characteristics such as density, temperature or overpressure. Even foam and buildup do not influence the measurement.
Different, as well as frequently changing products and mixtures can be
measured.
Bypass tube
46597-EN-131120
Different, as well as frequently changing products and mixtures can be
measured.
Fig. 17: Level measurement in a bypass tube
Standpipes or bypass tubes are often used in distillation columns, e.g. in
the petrochemical industry. Also in this environment, measurement with
guided microwaves has many advantages.
The configuration of the standpipe or bypass tube does not influence the
measurement. Lateral tube connections, mixing holes, buildup or corrosion in the tube do not influence the measuring result.
Guided Wave Radar – Level and interface measurement in liquids
13
Mounting
Product temperatures up to 400 °C (752 °F) can be measured, up to
150 °C (302 °F) even with standard versions.
The sensor utilises nearly the entire vessel height, and can measure with
high accuracy up to approx. 30 mm (1.181 in) below the process fitting. A
possible overfilling even in this range is detected reliably.
VEGAFLEX sensors are also available with SIL2.
46597-EN-131120
14
Guided Wave Radar – Level and interface measurement in liquids
Electronics - 4 … 20 mA/HART - two-wire
7
Electronics - 4 … 20 mA/HART - two-wire
Configuration of the electronics
Connection
The pluggable electronics is mounted in the electronics compartment of
the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against
vibration and moisture.
Single chamber housing
2
The terminals for voltage supply as well as the contact pins with I²C interface for parameter adjustment are located on the upper side of the electronics. In the double chamber housing, the terminals are located in the
separate terminal compartment.
Voltage supply
(+)1
Power supply and current signal are carried on the same two-wire cable.
The operating voltage can differ depending on the instrument version.
You can find the data of the voltage supply in chapter "Technical data" in
the operating instructions manual of the respective instrument.
Provide a reliable separation between the supply circuit and the mains
circuits according to DIN EN 61140 VDE 0140-1.
Data of the voltage supply:
l
l
Operating voltage
- 9.6 … 36 V DC
Permissible residual ripple - Non-Ex, Ex-ia instrument
- for 9.6 V< UN < 14 V: ≤ 0.7 Veff (16 … 400 Hz)
- for 18 V< UN < 36 V: ≤ 1.0 Veff (16 … 400 Hz)
3
4...20mA
2(-)
5
6
7
4
8
1
Fig. 18: Electronics and connection compartment, single chamber housing
1
2
3
4
Voltage supply/Signal output
For display and adjustment module or interface adapter
For external display and adjustment unit
Ground terminal for connection of the cable screen
Double chamber housing
2
Keep in mind the following additional factors that influence the operating
voltage:
4...20mA
l
l
Lower output voltage of the power supply unit under nominal load (e.g.
with a sensor current of 20.5 mA or 22 mA in case of fault message)
Influence of additional instruments in the circuit (see load values in
chapter "Technical data" of the operating instructions of the respective
instrument)
Connection cable
The instrument 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.
In the product configurator of VEGAFLEX, different cable glands are
available. This selection covers all cable diameters in the range of
4 … 12 mm (0.16 … 0.47 in).
(+)1
2(-)
3
1
Fig. 19: Connection compartment, double chamber housing
1
2
3
Voltage supply/Signal output
For display and adjustment module or interface adapter
Ground terminal for connection of the cable screen
Wire assignment, connection cable with version IP 66/IP 68, 1 bar
We generally recommend the use of screened cable for HART multidrop
mode.
1
Cable screening and grounding
2
Fig. 20: Wire assignment fix-connected connection cable
1
2
brown (+) and blue (-) to power supply or to the processing system
Shielding
46597-EN-131120
If screened cable is required, we recommend connecting 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 ground potential
(low impedance).
Guided Wave Radar – Level and interface measurement in liquids
15
Electronics - 4 … 20 mA/HART - four-wire
8
Electronics - 4 … 20 mA/HART - four-wire
Configuration of the electronics
The pluggable electronics is mounted in the electronics compartment of
the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against
vibration and moisture.
The contact pins with I²C interface for parameter adjustment are located
on the upper side of the electronics. The terminals for the power supply
are located in the separate connection compartment.
Voltage supply
If a reliable separation is required, the power supply and the current output
are transmitted over separate two-wire connection cables.
l
l
Operating voltage with version for low voltage
- 9.6 … 48 V DC, 20 … 42 V AC, 50/60 Hz
Operating voltage with version for mains voltage
- 90 … 253 V AC, 50/60 Hz
Connection cable
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.
For power supply, an approved installation cable with PE conductor is
required.
An outer cable diameter of 5 … 9 mm ensures the seal effect of the
respective cable entry.
Cable screening and grounding
If screened cable is required, we recommend connecting 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 ground potential
(low impedance).
Connection, double chamber housing
common
2(-)
IS GND
(+)1
active
power supply
passive
4...20mA
5
6
7
8
/L
/N
PE
Fig. 21: Connection compartment, double chamber housing
1
2
3
Voltage supply
4 … 20 mA signal output active
4 … 20 mA signal output passive
46597-EN-131120
16
Guided Wave Radar – Level and interface measurement in liquids
Electronics - Profibus PA
9
Electronics - Profibus PA
Double chamber housing
Configuration of the electronics
The pluggable electronics is mounted in the electronics compartment of
the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against
vibration and moisture.
2
The terminals for voltage supply as well as the plug with I²C interface for
parameter adjustment are located on the upper side of the electronics. In
the double-chamber housing, these connection elements are located in
the separate terminal compartment.
(+)1
Voltage supply
l
l
2(-)
5
6
7
4
8
1
The voltage supply is provided by a Profibus DP /PA segment coupler.
Data of the voltage supply:
3
Bus
Fig. 23: Connection compartment, double chamber housing
Operating voltage
- 9 … 32 V DC
Max. number of sensors per DP/PA segment coupler
- 32
1
2
3
Voltage supply/Signal output
For display and adjustment module or interface adapter
Ground terminal for connection of the cable screen
Wire assignment, connection cable with version IP 66/IP 68, 1 bar
Connection cable
Connection is carried out with screened cable according to Profibus specification.
1
In the product configurator of VEGAFLEX, different cable glands are
available. This selection covers all cable diameters in the range of
4 … 12 mm (0.16 … 0.47 in).
Make sure that the entire installation is carried out according to the Profibus specification. In particular, make sure that the bus is terminated with
suitable terminating resistors.
2
Fig. 24: Wire assignment fix-connected connection cable
1
2
brown (+) and blue (-) to power supply or to the processing system
Shielding
Cable screening and grounding
With systems with potential equalisation, connect the cable screen directly to ground potential at the power supply unit, in the connection
box and at the sensor. The screen in the sensor must be connected
directly to the internal ground terminal. The ground terminal outside on
the housing must be connected to the potential equalisation (low impedance).
In systems without potential equalisation, connect the cable screen directly to ground potential on the power supply unit and the sensor. In the
connection box or T-distributor, the screen of the short stub to the sensor
must not be connected to ground potential or to another cable screen.
Connection
Single chamber housing
2
3
78
1
78
45 6
2(-)
901
23
1
23
0
(+)1
901
45 6
0
Bus
4
5
6
7
8
5
1
46597-EN-131120
Fig. 22: Electronics and connection compartment, single chamber housing
1
2
3
4
5
Voltage supply/Signal output
For display and adjustment module or interface adapter
Selection switch for bus address
For external display and adjustment unit
Ground terminal for connection of the cable screen
Guided Wave Radar – Level and interface measurement in liquids
17
Electronics - Foundation Fieldbus
10
Electronics - Foundation Fieldbus
Double chamber housing
Configuration of the electronics
The pluggable electronics is mounted in the electronics compartment of
the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against
vibration and moisture.
2
The terminals for voltage supply as well as the contact pins with I²C interface for parameter adjustment are located on the upper side of the electronics. In the double chamber housing, the terminals are located in the
separate terminal compartment.
(+)1
Voltage supply
Data of the voltage supply:
l
2(-)
5
6
7
4
8
1
Power supply via the H1 Fieldbus cable.
l
3
Bus
Fig. 26: Connection compartment, double chamber housing
Operating voltage
- 9 … 32 V DC
max. number of sensors
- 32
1
2
3
Voltage supply/Signal output
For display and adjustment module or interface adapter
Ground terminal for connection of the cable screen
Wire assignment, connection cable with version IP 66/IP 68, 1 bar
Connection cable
Connection is carried out with screened cable according to Fieldbus
specification.
1
In the product configurator of VEGAFLEX, different cable glands are
available. This selection covers all cable diameters in the range of
4 … 12 mm (0.16 … 0.47 in).
Make sure that the entire installation is carried out according to the Fieldbus specification. In particular, make sure that the bus is terminated with
suitable terminating resistors.
2
Fig. 27: Wire assignment fix-connected connection cable
1
2
brown (+) and blue (-) to power supply or to the processing system
Shielding
Cable screening and grounding
With systems with potential equalisation, connect the cable screen directly to ground potential at the power supply unit, in the connection
box and at the sensor. The screen in the sensor must be connected
directly to the internal ground terminal. The ground terminal outside on
the housing must be connected to the potential equalisation (low impedance).
In systems without potential equalisation, connect the cable screen directly to ground potential on the power supply unit and the sensor. In the
connection box or T-distributor, the screen of the short stub to the sensor
must not be connected to ground potential or to another cable screen.
Connection
Single chamber housing
2
3
0
(+)1
1
1
0
Bus
4
2(-)
5
6
7
8
5
1
Fig. 25: Electronics and connection compartment, single chamber housing
18
Voltage supply/Signal output
Contact pins for the display and adjustment module or interface adapter
Selection switch for bus address
For external display and adjustment unit
Ground terminal for connection of the cable screen
46597-EN-131120
1
2
3
4
5
Guided Wave Radar – Level and interface measurement in liquids
Electronics, Modbus, Levelmaster protocol
11
Electronics, Modbus, Levelmaster protocol
Configuration of the electronics
The pluggable electronics is mounted in the electronics compartment of
the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against
vibration and moisture.
The contact pins with I²C interface for parameter adjustment are located
on the upper side of the electronics. The terminals for the power supply
are located in the separate connection compartment.
Voltage supply
Power supply via the Modbus host (RTU)
l
l
Operating voltage
- 8 … 30 V DC
max. number of sensors
- 32
Connection cable
Connection is carried out with screened cable according to Fieldbus
specification.
For power supply, a separate two-wire cable is required.
In the product configurator of VEGAFLEX, different cable glands are
available. This selection covers all cable diameters in the range of
4 … 12 mm (0.16 … 0.47 in).
Make sure that the entire installation is carried out according to the Fieldbus specification. In particular, make sure that the bus is terminated with
suitable terminating resistors.
Cable screening and grounding
With systems with potential equalisation, connect the cable screen directly to ground potential at the power supply unit, in the connection
box and at the sensor. The screen in the sensor must be connected
directly to the internal ground terminal. The ground terminal outside on
the housing must be connected to the potential equalisation (low impedance).
In systems without potential equalisation, connect the cable screen directly to ground potential on the power supply unit and the sensor. In the
connection box or T-distributor, the screen of the short stub to the sensor
must not be connected to ground potential or to another cable screen.
Connection compartment
D0 (+)
MODBUS
D1 (-)
USB
power supply
IS GND
1
2
(+)1
2(-) off on
3 4
5
4
3
Fig. 28: Connection compartment
46597-EN-131120
1
2
3
4
USB interface
Slide switch for integrated termination resistor (120 Ω)
Voltage supply
Modbus signal
Guided Wave Radar – Level and interface measurement in liquids
19
Operation
12
Operation
12.1 Overview
The sensors can be adjusted with the following adjustment media:
l With the display and adjustment module
l With external display and adjustment unit
l an adjustment software according to FDT/DTM standard, e.g.
PACTware and PC
as well as via systems from other manufacturers, dependent on the signal
output:
l A HART handheld (4 … 20 mA/HART)
l The adjustment program AMS (4 … 20 mA/HART and Foundation
Fieldbus)
l The adjustment program PDM (Profibus PA)
l A configuration tool (Foundation Fieldbus)
The entered parameters are generally saved in the sensor, optionally also
in the display and adjustment module or in the adjustment program.
12.2 Display and adjustment module
PLICSCOM
The pluggable display and adjustment module is used for measured value
indication, operation and diagnosis. It is equipped with an illuminated full
dot matrix as well as four keys for adjustment.
standard are required. The current PACTware version as well as all available DTMs are compiled in a DTM Collection. The DTMs can also be
integrated into other frame applications according to the FDT standard.
All device DTMs are available as a free-of-charge standard version and as
a full version that must be purchased. In the standard version, all functions
for complete setup are already included. An assistant for simple project
configuration simplifies the adjustment considerably. Saving/printing the
project as well as import/export functions are also part of the standard
version.
In the full version there is also an extended print function for complete
project documentation as well as a save function for measured value and
echo curves. In addition, there is a tank calculation program as well as a
multiviewer for display and analysis of the saved measured value and
echo curves.
Connection of the PC via VEGACONNECT
The interface converter VEGACONNECT is required for connection of the
PC. On the computer side, the connectionis made via USB interface. The
VEGACONNECT is placed instead of the display and adjustment module
to the sensor, the connection to the sensor is made automatically. As an
alternative the connection via the HART signal can be carried out on any
position of the signal cable with 4 … 20 mA/HART sensors.
1
TWIST
OP
CK
EN
LO
2
USB
3
Fig. 29: Display and adjustment module PLICSCOM
The display and adjustment module is integrated in the respective sensor
housing or in the external indicating and adjustment unit. After mounting,
the sensor as well as the display and adjustment module are splash-proof
even without housing cover.
12.3 External display and adjustment unit VEGADIS 62
VEGADIS 62 is suitable for measured value indication and adjustment of
sensors with HART protocol. The instrument is looped into the 4 … 20 mA/
HART signal cable.
Fig. 31: Connection via VEGACONNECT and USB
1
2
3
VEGACONNECT
plics® sensor
USB cable to the PC
Necessary components:
l VEGAFLEX
l PC with PACTware and suitable DTM
l VEGACONNECT
l Voltage supply/Processing system
12.5 Alternative adjustment programs
PDM
For HART and Profibus PA sensors, device descriptions are available as
EDDs for the adjustment program PDM. The device descriptions are already included in the current version of the PDM. Newer instrument drivers that are not yet delivered with the PDM are available in the download
section.
Fig. 30: External display and adjustment unit VEGADIS 62
12.4 PACTware/DTM
As an alternative to the dislay and adjustment module, the sensor can also
be configured via a Windows PC. To do this, the configuration software
PACTware and a suitable instrument driver (DTM) according to the FDT
20
Guided Wave Radar – Level and interface measurement in liquids
46597-EN-131120
AMS
For HART and Foundation Fieldbus sensors, device descriptions are
available as EDDs for the adjustment program AMS. The device descriptions are already included in the current version of the AMS. Newer instrument drivers that are not yet delivered with the AMS are available in the
download section.
Dimensions
13
Dimensions
Plastic housing
VEGAFLEX 81, cable and rod version
~ 69 mm
(2.72")
ø 79 mm
(3.11")
~ 84 mm
(3.31")
ø 79 mm
(3.11")
M20x1,5/
½ NPT
G¾
Single chamber housing
Double chamber housing
22 mm
(0.87")
ø 12 mm
(0.47")
~ 116 mm
(4.57")
L
L
Aluminium housing
~ 87 mm
(3.43")
ø 86 mm
(3.39")
ø 4 mm
(0.16")
100 mm (3.94")
ø 86 mm
(3.39")
ø 20 mm
(0.79")
120 mm
(4.72")
116 mm
(4.57")
M16x1,5
M20x1,5
M20x1,5/
½ NPT
ø 8 mm
(0.32")
1
M20x1,5/
½ NPT
1
L
1
2
51 mm
(2.01")
G1 ½
2
30 mm
(1.18")
1
SW 36 mm
(1.42")
96 mm
(3.78")
M20x1,5/
½ NPT
68 mm
(2.68")
SW 55 mm
(2.17")
112 mm
(4.41")
112 mm
(4.41")
M16x1,5
3
2
2
Fig. 32: VEGAFLEX 81, cable and rod version
1
2
Single chamber housing
Double chamber housing
1
2
3
L
Cable version, ø 4 mm (0.16 in) with threaded fitting
Rod version, ø 12 mm (0.47 in) with threaded fitting
Rod version, ø 8 mm (0.32 in) with flange connection
Sensor length, see chapter "Technical data"
Stainless steel housing
~ 87 mm
(3.43")
~ 69 mm
(2.72")
ø 79 mm
(3.11")
~ 59 mm
(2.32")
ø 80 mm
(3.15")
VEGAFLEX 81, coax version
ø 86 mm
(3.39")
120 mm
(4.72")
SW 55 mm
(2.17")
1
2
M20x1,5/
½ NPT
3
81 mm
(3.19")
M20x1,5/
½ NPT
SW 36 mm
(1.42")
46 mm
(1.81")
M20x1,5/
½ NPT
51 mm
(2.01")
112 mm
(4.41")
117 mm
(4.61")
M16x1,5
G¾
22 mm
(0.86")
G1 ½
Single chamber housing, electropolished
Single chamber housing, precision casting
Double chamber housing, precision casting
3
L
1
2
2
ø 21,3 mm
(0.84")
ø 42,2 mm
(1.66")
1
2
46597-EN-131120
Fig. 34: VEGAFLEX 81, coax version
1
2
3
L
Guided Wave Radar – Level and interface measurement in liquids
Coax version, ø 21.3 mm (0.84 in) with threaded fitting
Coax version, ø 42.2 mm (1.66 in) with threaded fitting
Coax version, ø 42.2 mm (1.66 in) with flange connection
Sensor length, see chapter "Technical data"
21
Dimensions
VEGAFLEX 83, PFA coated version
45 mm
(1.77")
L
L
237 mm (9.33")
312 mm (12.28")
70 mm
(2.76")
69,4 mm
(2.73")
VEGAFLEX 86, cable, rod version
L
L
ø 4 mm
(0.16")
ø 20 mm
(0.79")
1
1
Fig. 36: VEGAFLEX 83, PFA coated version
1
2
L
ø 20 mm
(0.79")
ø 16 mm
(0.63")
2
ø 4 mm
(0.16")
100 mm
(3.94")
ø 10 mm
(0.39")
120 mm (4.72")
ø 4 mm
(0.16")
2
3
4
Fig. 40: VEGAFLEX 86, cable, rod version with threaded fitting
Rod version, ø 10 mm (0.39 in) with flange connection
Cable version, ø 4 mm (0.16 in) with Clamp connection
Sensor length, see chapter "Technical data"
1
2
3
4
L
Rod version, ø 16 mm (0.63 in), -20 … +250 °C/-4 … +482 °F
Cable version, ø 4 mm (0.16 in), -20 … +250 °C/-4 … +482 °F
Rod version ø 16 mm (0.63 in), -200 … +400 °C/-328 … +752 °F
Cable version, ø 4 mm (0.16 in), -200 … +400 °C/-328 … +752 °F
Sensor length, see chapter "Technical data"
VEGAFLEX 83, polished version
L
L
57 mm
(2.24")
L
35 mm
(1.38")
237 mm (9.33")
312 mm (12.28")
56 mm
(2.20")
VEGAFLEX 86, coax version
ø 10 mm
(0.39")
ø 42,2 mm
(1.66")
Fig. 38: VEGAFLEX 83, polished version (Basle Standard), rod version ø 10 mm
(0.39 in) with Clamp connection
L
1
2
Fig. 42: VEGAFLEX 86, coax version with threaded fitting
1
2
L
22
Coax version, ø 42.2 mm (1.66 in), -20 … +250 °C/-4 … +482 °F
Coax version, ø 42.2 mm (1.66 in), -200 … +400 °C/-328 … +752 °F
Sensor length, see chapter "Technical data"
Guided Wave Radar – Level and interface measurement in liquids
46597-EN-131120
Sensor length, see chapter "Technical data"
46597-EN-131120
The listed drawings are only an excerpt of the available process fittings.
You can find further drawings on our homepage www.vega.
com » Downloads » Drawings.
Guided Wave Radar – Level and interface measurement in liquids
23
VEGA Grieshaber KG
Am Hohenstein 113
77761 Schiltach
Germany
Phone +49 7836 50-0
Fax +49 7836 50-201
E-Mail: info.de@vega.com
www.vega.com
You can find at www.vega.com
operating instructions manuals
l specification sheet
l Software
l drawings
l certificates
l approvals
and much, much more
l
Subject to change without prior notice
46597-EN-131120
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