VEGA FLEX81 User Manual

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Operating Instructions

TDR sensor for continuous level and interface measurement of liquids

VEGAFLEX 81

4 … 20 mA/HART two-wire

Coax probe

Document ID: 42279

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.

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.

For further information see chapter "Mounting".

1. Make sure that the power supply corresponds to the specica-

tions on the type label.

2. Connect the instrument according to the following illustration

Set parameters

4...20mA

( )

(-)

678

Fig. 1: Electronics and connection compartment, single chamber housing

1 Voltage supply, signal output 2 For display and adjustment module or interface adapter 3 For external display and adjustment unit 4 Ground terminal for connection of the cable screen

See also 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. You can choose

between level and interface measurement.

2. In the menu item "Medium - Dielectric constant" you can dene

the medium type (medium).

3. Carry out the adjustment in the menu items "Min. adjustment" and "Max. adjustment".

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Quick start

4. A "Linearization" is recommended for all vessels in which the vessel volume 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 suppres-

sion.

Parameterization example

Fur

ther steps

The sensor measures the distance from the sensor (reference plane) to the product surface.

Fig. 2: Measuring ranges - VEGAFLEX 81

1 Reference plane 2 Probe length L 3 Measuring range (default setting refers to the measuring range in water) 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 specications is always the seal surface of the thread or ange.

1. In the menu "Additional settings", menu item "Damping" you can adjust the requested damping of the output signal.

2. Select the parameter of the current output and the output characteristics in the menu item "Current output".

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Contents

1 About this document

1.1 Function ........................................................................................................................... 6

1.2 Target group ..................................................................................................................... 6

1.3 Symbolism used ............................................................................................................... 6

2 For your safety

2.1 Authorised personnel ....................................................................................................... 7

2.2 Appropriate use ................................................................................................................ 7

2.3 Warning about incorrect use ............................................................................................. 7

2.4 General safety instructions ............................................................................................... 7

2.5 CE conformity ................................................................................................................... 7

2.6 NAMUR recommendations .............................................................................................. 8

2.7 Environmental instructions ............................................................................................... 8

3 Product description

3.1 Conguration .................................................................................................................... 9

3.2 Principle of operation...................................................................................................... 10

3.3 Packaging, transport and storage ................................................................................... 13

3.4 Accessories and replacement parts ............................................................................... 13

4 Mounting

4.1 General instructions ....................................................................................................... 15

4.2 Mounting instructions ..................................................................................................... 15

5 Connecting to power supply

5.1 Preparing the connection ............................................................................................... 19

5.2 Connecting ..................................................................................................................... 20

5.3 Wiring plan, single chamber housing.............................................................................. 22

5.4 Wiring plan, double chamber housing ............................................................................ 22

5.5 Wiring plan, Ex-d-ia double chamber housing ................................................................ 24

5.6 Wiring plan - version IP 66/IP 68, 1 bar ........................................................................... 25

5.7 Supplementary electronics ............................................................................................. 26

5.8 Switch-on phase............................................................................................................. 26

6 Set up with the display and adjustment module

6.1 Insert display and adjustment module ............................................................................ 28

6.2 Adjustment system ......................................................................................................... 29

6.3 Parameter adjustment - Quick setup .............................................................................. 30

6.4 Parameter adjustment - Extended adjustment................................................................ 33

6.5 Saving the parameter adjustment data ........................................................................... 52

7 Setup with PACTware

7.1 Connect the PC .............................................................................................................. 53

7.2 Parameter adjustment with PACTware ............................................................................ 54

7.3 Set up with the quick setup ............................................................................................. 55

7.4 Saving the parameter adjustment data ........................................................................... 59

8 Set up with other systems

8.1 DD adjustment programs ............................................................................................... 60

8.2 Field Communicator 375, 475 ........................................................................................ 60

9 Diagnostics and service

9.1 Maintenance .................................................................................................................. 61

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9.2 Diagnosis memory ......................................................................................................... 61

9.3 Status messages ............................................................................................................ 62

9.4 Rectify faults ................................................................................................................... 66

9.5 Exchanging the electronics module ................................................................................ 69

9.6 Software update ............................................................................................................. 70

9.7 How to proceed in case of repair .................................................................................... 70

10 Dismounting

10.1 Dismounting steps.......................................................................................................... 71

10.2 Disposal ......................................................................................................................... 71

11 Supplement

11.1 Technical data ................................................................................................................ 72

11.2 Dimensions .................................................................................................................... 82

Contents

Safety instructions for Ex areas

Please note the Ex-specic 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.

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

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 rectication. 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 of actions

Numbers set in front indicate successive steps in a procedure.

Battery disposal

This symbol indicates special information about the disposal of batteries and accumulators.

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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 81 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 specications in the operating instructions

manual as well as possible supplementary instructions.

2.3 Warning about incorrect use

Inappropriate or incorrect use of the instrument can give rise to application-specic hazards, e.g. vessel overll or damage to system

components through incorrect mounting or adjustment.

2.4 General safety instructions

This is a 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 regula-

tions.

The safety instructions in this operating instructions manual, the national 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. Arbitrary conversions or modications are explicitly forbidden.

The safety approval markings and safety tips on the device must also be observed.

2.5 CE conformity

The device fullls the legal requirements of the applicable EC guidelines. By axing the CE marking, we conrm successful testing of the

product.

You can nd the CE Certicate of Conformity in the download section of our homepage.

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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 dierent 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 fullls 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 certied according

to DIN EN ISO 14001.

Please help us fulll this obligation by observing the environmental

instructions in this manual:

Chapter "Packaging, transport and storage"

•

Chapter "Disposal"

•

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Type plate

3 Product description

3.1 Conguration

The nameplate contains the most important data for identication and use of the instrument:

4 5

7 8 9

Fig. 3: 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 Reminder to observe the instrument documentation

15 NotiedauthorityforCEmarking

16 Approval directives

Serial number

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

With the serial number of the instrument on the type label you can nd the following data on our homepage:

Article number of the instrument (HTML)

•

Delivery date (HTML)

•

Order-specic instrument features (HTML)

•

Operating instructions at the time of shipment (PDF)

•

Order-specic sensor data for an electronics exchange (XML)

•

Test certicate pressure transmitters (PDF)

•

Go to www.vega.com, "VEGA Tools" and "Serial number search".

As an alternative, you can nd the data via your Smartphone:

Download the Smartphone-App "VEGA Tools" from the "Apple

•

App Store " or the "Google Play Store" Scan the Data-Matrix-Code on the type label of the instrument or

•

Enter the serial number manually into the App

•

3 Product description

Scope of this operating instructions manual

Versions

Scope of deliv

Application area

ery

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 qualication

•

The instrument and the electronics version can be determined via the

product code on the type label as well as on the electronics.

Standard electronics: Type FX80H.-

•

The scope of delivery encompasses:

Sensor

•

Documentation

•

– this operating instructions manual – Test certicate 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-specic "Safety instructions" (with Ex versions) – if necessary, further certicates

3.2 Principle of operation

The VEGAFLEX 81 is a level sensor with coax probe for continuous level or interface measurement, suitable for applications in liquids.

Functional principle level measurement

High frequency microwave pulses are guided along a steel cable or a rod. Upon reaching the product surface, the microwave pulses are reected. The running time is evaluated by the instrument and outputted as level.

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3 Product description

Fig. 4: Level measurement

1 Sensorreferenceplane(sealsurfaceoftheprocesstting)

d Distance to the interface (HART value 1) h Height - 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 vessels with uidized products.

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.

Functional principle - inter

ace measurement

High frequency microwave impulses are guided along a steel cable or rod. Upon reaching the product surface, a part of the microwave impulses is reected. The other part passes through the upper product and is reected by the interface. The running times to the two product

layers are processed by the instrument.

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3 Product description

Prerequisites for interface measurement

Fig. 5: Interface measurement

1 Sensorreferenceplane(sealsurfaceoftheprocesstting)

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 L3 Gas phase

Upper medium (L2)

The upper medium must not be conductive

•

The dielectric constant of the upper medium or the actual distance

•

to the interface must be known (input required). Min. dielectric constant: 1.6. You can nd a list of dielectric constants on our home page: www.vega.com. The composition of the upper medium must be stable, no varying

•

products or mixtures The upper medium must be homogeneous, no stratications

•

within the medium

Min. thickness of the upper medium 50 mm (1.97 in)

•

Clear separation from the lower medium, emulsion phase or detri-

•

tus layer max. 50 mm (1.97 in) If possible, no foam on the surface

•

Lower medium (L1)

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.

Gas phase (L3)

Air or gas mixture

•

Gas phase - dependent on the application, gas pahse does not

•

always exist (d2 = 0)

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

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3 Product description

Output signal

Pack

aging

Transport

Transport inspection

Storage

Storage and transport temperature

The instrument is always preset to the application "Level measurement".

For the interface measurement, you can select the requested output

signal with the setup.

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.

The delivery must be checked for completeness and possible transit

damage immediately at receipt. Ascertained transit damage or con-

cealed defects must be appropriately dealt with.

Up to the time of installation, the packages must be left closed and

stored according to the orientation and storage markings on the outside.

Unless otherwise indicated, the packages must be stored only under the following conditions:

Not in the open

•

Dry and dust free

•

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

PLICSCOM

VEGACONNECT

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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, the adjustment software

PACTware with VEGA-DTM is required.

3 Product description

You can nd further information in the operating instructions "Interface adapter VEGACONNECT" (Document-ID 32628).

VEGADIS 81

VEGADIS 62

PLICSMOBILE

Protective cap

Flanges

T61

The VEGADIS 81 is an external display and adjustment unit for VEGA

plics

sensors.

For sensors with double chamber housing the interface adapter "DISADAPT" is also required for VEGADIS 81.

You can nd further information in the operating instructions "VE- GADIS 81" (Document-ID 43814).

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 dierent versions according to the following standards: DIN 2501, EN 1092-1, ANSI B 16.5, JIS B 22101984, GOST 12821-80.

You can nd additional information in the supplementary instructions manual "Flanges according to DIN-EN-ASME-JIS" (Document-ID

31088).

Electronics module

Display and adjustment module with heating

The electronics module VEGAFLEX series 80 is a replacement part

for TDR sensors of VEGAFLEX series 80. There is a dierent version available for each type of signal output.

You can nd further information in the operating instructions manual "Electronics module VEGAFLEX series 80".

The display and adjustment module can be optionally replaced by a

display and adjustment module with heating function.

You can use this display and adjustment module in an ambient tem-

perature range of -40 … +70 °C. You can nd further information in the operating instructions "Display

and adjustment module with heating" (Document-ID 31708).

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

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Screwing in

4 Mounting

4.1 General instructions

On instruments with process tting thread, the hexagon must be tightened with a suitable screwdriver. Wrench size see chapter "Dimen- sions".

Warning:

The housing must not be used to screw the instrument in! Applying

tightening force can damage internal parts of the housing.

Protection against moisture

Protective caps

Suitability for the process conditions

Protect your instrument further through the following measures

against moisture penetration:

Use the recommended cable (see chapter "Connecting to power

•

supply")

Tighten the cable gland

•

Loop the connection cable downward in front of the cable gland

•

This applies particularly to:

Outdoor mounting

•

Installations in areas where high humidity is expected (e.g. through

•

cleaning processes)

Installations on cooled or heated vessels

•

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 are suitable for the existing process conditions.

These are mainly:

Active measuring component

•

Process tting

•

Process seal

•

Process conditions are particularly:

Process pressure

•

Process temperature

•

Chemical properties of the medium

•

Abrasion and mechanical inuences

•

You can nd the specications of the process conditions in chapter "Technical data" as well as on the nameplate.

4.2 Mounting instructions

Installation position

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Mount VEGAFLEX 81 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

4 Mounting

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 possible. The exact value of the min. distance (lower dead band) is stated in chapter "Technical data".

Fig. 6: Vessel with conical bottom

Welding work

Inowingmedium

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 inowing product.

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Fig.7:Mountingofthesensorwithinowingmedium

4 Mounting

Measuring range

essure

Steam boiler applications

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). These 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 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 specied in chapter "Technical data" or on the type label of the sensor.

Vapours, superimposed gases, high pressures and temperature differences can change the spreading speed of radar impulses.

There are two possibilities to correct these deviations.

Corrective value in the process control system

In the technical data under "Inuence of superimposed gas and pressure on accuracy" you can nd a table with deviation values in some

typical gases or in steam.

In the control system (DCS) you can correct the measurement results

of the VEGAFLEX 81 with these values. The prerequisite is constant temperature and pressure in the vessel.

Automatic correction via the reference distance

The VEGAFLEX 81 can be equipped optionally with a running time correction via reference distance. The probe can carry out an automatic running time correction with it.

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

4 Mounting

The reference point must hence not be overlled. The upper dead band is hence 450 mm (17.7 in).

Fig. 8: Measuring ranges - VEGAFLEX 81 with steam compensation

1 Reference plane 2 Probe length L 3 Measuring range 4 Upper dead band 5 Lower dead band 6 Additional upper dead band by steam compensation 7 Reference measurement distance to steam compensation

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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

oltage supply

Connection to signal con ditioning instruments

Connection cable

Power supply and current signal are carried on the same two-wire

cable. The operating voltage can dier depending on the instrument version.

The data for power supply are specied in chapter "Technical data". Provide a reliable separation between the supply circuit and the

mains circuits according to DIN EN 61140 VDE 0140-1.

Keep in mind the following additional factors that inuence the operating voltage:

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)

Inuence of additional instruments in the circuit (see load values in

•

chapter "Technical data")

The signal conditioning instruments VEGAMET and VEGASCAN

have digital sensor recognition. When connecting VEGAFLEX 81, an up-to-date version of the signal conditioning instrument software is required. For a software update go to "www.vega.com/downloads" and "Software".

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.

Use cable with round cross section for instruments with housing and cable gland. To ensure the seal eect of the cable gland (IP protection rating), nd out which cable outer diameter the cable gland is suitable for.

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. We generally recommend the use of screened cable for HART multi-

drop mode.

Cable gland ½ NPT

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

With plastic housing, the NPT cable gland or the Conduit steel tube

must be screwed without grease into the threaded insert.

Max. torque for all housings see chapter "Technical data".

5 Connecting to power supply

Cable screening and grounding

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 suppressed, but the protective eect against high frequency interfer-

ence signals remains.

Warning:

Signicant potential dierences 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 specications on the potential connections inside the instrument in chapter "Technical data".

Connection technology

Connection procedure

5.2 Connecting

The voltage supply and signal output are connected via the spring-

loaded terminals in the housing.

The connection to the display and adjustment module or to the inter-

face adapter is carried out via contact pins in the housing.

Information:

The terminal block is pluggable and can be removed from the electronics. To do this, lift the terminal block with a small screwdriver and pull it out. When reinserting the terminal block, you should hear it

snap in.

Proceed as follows:

1. Unscrew the housing cover

2. If a display and adjustment module is installed, remove it by turning 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

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

5 Connecting to power supply

Fig. 9: Connection steps 5 and 6 - Single chamber housing

Fig. 10: Connection steps 5 and 6 - Double chamber housing

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 from above with a small screwdriver; the terminal opening is freed. When the screwdriver is released, the

terminal closes again.

You can nd further information on the max. wire cross-section under "Technical data/Electromechanical data"

7. Check the hold of the wires in the terminals by lightly pulling on

them

8. Connect the screen to the internal ground terminal, connect the

outer ground terminal to potential equalisation

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

5 Connecting to power supply

Electronics and connection compartment

9. Tighten the compression nut of the cable entry. The seal ring must

completely encircle the cable

10. Reinsert the display and adjustment module, if one was installed

11. Screw the housing cover back on

The electrical connection is hence nished.

5.3 Wiring plan, single chamber housing

The following illustration applies to the non-Ex, Ex-ia and Ex-d version.

Electronics compartment

( )

4...20mA

(-)

678

Fig. 11: Electronics and connection compartment, single chamber housing

1 Voltage supply, signal output 2 For display and adjustment module or interface adapter 3 For external display and adjustment unit 4 Ground terminal for connection of the cable screen

5.4 Wiring plan, double chamber housing

The following illustrations apply to the non-Ex as well as to the Ex-ia version.

4...20mA

( )

(-)

Fig. 12: Electronics compartment, double chamber housing

1 Internal connection to the connection compartment 2 For display and adjustment module or interface adapter

567

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Connection compartment

5 Connecting to power supply

Connection compartment

- Radio module PLICSMOBILE

( )

4...20mA

(-)

678

Fig. 13: Connection compartment, double chamber housing

1 Voltage supply, signal output 2 For display and adjustment module or interface adapter 3 For external display and adjustment unit 4 Ground terminal for connection of the cable screen

Information:

The use of an external display and adjustment unit and a display and

adjustment module in parallel in the connection compartment is not supported.

Status

SIM-Card

Test

Bus

( )

(-)

USB

Fig. 14: Connection compartment radio module PLICSMOBILE

1 Voltage supply

You can nd detailed information on connection in the supplementary instructions "PLICSMOBILE GSM/GPRS radio module".

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

5 Connecting to power supply

Electronics compartment

Connection compartment

5.5 Wiring plan, Ex-d-ia double chamber housing

4...20mA

( )

(-)

Fig. 15: Electronics compartment, double chamber housing

1 Internal connection to the connection compartment 2 For display and adjustment module or interface adapter 3 Internal connection to the plug connector for external display and adjust-

ment unit (optional)

Note:

If an instrument with Ex-d-ia approval is used, HART multidrop operation is not possible.

567

4...20mA

( )

(-)

Fig. 16: Connection compartment, Ex-d double chamber housing

1 Voltage supply, signal output 2 Ground terminal for connection of the cable screen

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

DIS-ADAPT with plug connector M12 x 1 for external display and adjustment unit

5 Connecting to power supply

Fig. 17: View to the electronics compartment

1 DIS-ADAPT 2 Internal plug connection 3 Plug connector M12 x 1

Fig. 18: Top view of the plug connector

1 Pin 1 2 Pin 2 3 Pin 3 4 Pin 4

Contact pin Colour connection ca-

Pin 1 Brown 5

Pin 2 White 6

Pin 3 Blue 7

Pin 4 Black 8

5.6 Wiring plan - version IP 66/IP 68, 1 bar

Wire assignment, connection cable

Fig.19:Wireassignmentx-connectedconnectioncable

1 brown (+) and blue (-) to power supply or to the processing system 2 Shielding

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

ble in the sensor

Terminal, electronics module

5 Connecting to power supply

Supplementary electronics - Second current output

5.7 Supplementary electronics

You can use the supplementary electronics - second current output to

provided a second measured value. Both current outputs are passive and need a power supply.

Supplementar

y electronics - Radio module PLICSMOBILE

4...20mA

( )

(-)

1 2

I I

4...20mA

( )

(-)

Fig. 20: Connection compartment double chamber housing, supplementary electronics - second current output

1 First current output (I) - Voltage supply and signal output (HART) 2 Second current output (II) - Voltage supply and signal output (without HART) 3 Ground terminal for connection of the cable screen

The radio module PLICSMOBILE is an external GSM/GPRS radio

unit for transmission of measured values and for remote parameter

adjustment.

Status

SIM-Card

Test

Bus

( )

(-)

USB

Fig. 21: Radio module PLICSMOBILE integrated in the connection compartment

1 Voltage supply

You can nd detailed information on connection in the supplementary instructions "PLICSMOBILE GSM/GPRS radio module".

5.8 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

•

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

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5 Connecting to power supply

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.

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VEGAFLEX 81 • 4 … 20 mA/HART two-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 ad-

ditional connection is not necessary.

Fig. 22: Insertion of the display and adjustment module with single chamber housing into the electronics compartment

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

1 2

Fig. 23: Insertion of the display and adjustment module into the 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 retrot 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

Fig. 24: Display and adjustment elements

1 LC display 2 Adjustment keys

Key functions

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

[OK] key:

•

– Move to the menu overview

6 Set up with the display and adjustment module

– Conrm selected menu – Edit parameter – Save value

[->] key:

•

– Presentation, change measured value – Select list entry – Select editing position

[+] key:

•

– Change value of the parameter

[ESC] key:

•

– Interrupt input – Jump to next higher menu

Adjustment system

Switch-on phase

ed value indica-

Measur tion

The sensor is adjusted via the four keys of the display and adjust-

ment module. The LC display indicates the individual menu items. The functions of the individual keys are shown in the above illustration. Approx. 10 minutes after the last pressing of a key, an automatic reset to measured value indication is triggered. Any values not conrmed with [OK] will not be saved.

After switching on, the VEGAFLEX 81 carries out a short self-test where the device software is checked.

The output signal transmits a fault signal during the switch-on phase. The following information is displayed on the display and adjustment

module during the startup procedure:

Instrument type

•

Device name

•

Software version (SW-Ver)

•

Hardware version (HW-Ver)

•

With the [->] key you can move between three dierent indication

modes.

In the rst view, the selected measured value is displayed in large

digits. In the second view, the selected measured value and a correspond-

ing bar graph presentation are displayed.

In the third view, the selected measured value as well as a second selectable value, e.g. the temperature, are displayed.

Quick setup

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6.3 Parameter adjustment - Quick setup

To quickly and easily adapt the sensor to the application, select

the menu item "Quick setup" in the start graphic on the display and

adjustment module.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

General information

vel measurement

6 Set up with the display and adjustment module

You can nd "Extended adjustment" in the next sub-chapter.

Measurement loop name

In the rst menu item you can assign a suitable measurement loop name. You can enter a name with max. 19 characters.

Medium type

In the next menu item you can see which product type the instrument is suitable for. If your instrument is only suitable for a certain medium, this menu item is not visible.

Application

In this menu item, you can select the application. You can choose between level measurement and interface measurement. You can also choose between measurement in a vessel or in a bypass or

standpipe.

Medium - dielectric constant

In this menu item, you can dene the medium type (product).

Max. adjustment

In this menu item, you can enter the max. adjustment for the level. Enter the appropriate distance value in m (corresponding to the

percentage value) for the full vessel. The distance refers to the sensor reference plane (seal surface of the process tting). Keep in mind that the max. level must lie below the dead band.

Min. adjustment

In this menu item, you can enter the min. adjustment for the level. Enter the suitable distance value in m for the empty vessel (e.g.

distance from the ange to the probe end) corresponding to the percentage value. The distance refers tot he sensor reference plane (seal surface of the process tting).

Interface measurement

Dielectric constant - upper medium

In this menu item, you can dene the medium type (product).

Max. adjustment

In this menu item, you can enter the max. adjustment for the level. Enter the appropriate distance value in m (corresponding to the

percentage value) for the full vessel. The distance refers to the sensor

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

reference plane (seal surface of the process tting). Keep in mind that the max. level must lie below the dead band.

Min. adjustment

In this menu item, you can enter the min. adjustment for the level. Enter the suitable distance value in m for the empty vessel (e.g.

distance from the ange to the probe end) corresponding to the percentage value. The distance refers tot he sensor reference plane (seal surface of the process tting).

Max. adjustment - Interface

Carry out the max. adjustment for the interface. To do this, enter the percentage value and the suitable distance value

in m for the full vessel.

Min. adjustment - Interface

Carry out the min. adjustment for the interface. To do this, enter the percentage value and the suitable distance value

in m for the empty vessel.

Linearization

A linearization is necessary for all vessels in which the vessel volume does not increase linearly with the level - e.g. a horizontal cylindrical or spherical tank, when the indication or output of the volume is required. Corresponding linearization curves are preprogrammed for these vessels. They represent the correlation between the level percentage and vessel volume.

The linearization applies for the measured value indication and the current output. By activating the suitable curve, the percentage vessel volume is displayed correctly.

False signal suppression

High sockets and internal vessel installations cause interfering reections and can inuence the measurement.

A false signal suppression detects, marks and saves these false signals so that they are no longer taken into account for the level and interface measurement. We generally recommend carrying out a false signal suppression to achieve the best possible accuracy. This should be done with the lowest possible level so that all potential interfering reections can be detected.

Enter the actual distance from the sensor to the product surface. All interfering signals in this section are detected by the sensor and

stored.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

6 Set up with the display and adjustment module

The instrument carries out an automatic false signal suppression as soon as the probe is uncovered. The false signal suppression is

always updated.

6.4 Parameter adjustment - Extended adjustment

For technically demanding measurement loops you can carry out

extended settings in "Extended adjustment".

Main menu

The main menu is divided into ve sections with the following func-

tions:

Setup: Settings, e.g. measurement loop name, medium, vessel, adjustment, signal output, device unit, false signal suppression, linearization curve

Display: Settings, e.g., for language, measured value display, lighting Diagnosis: Information, e.g. on instrument status, pointer, measure-

ment reliability, simulation, echo curve

Additional adjustments: Reset, date/time, reset, copy function Info: Instrument name, hardware and software version, date of manu-

facture, instrument features

Note:

For optimum adjustment of the measurement, the individual submenu items in the main menu item "Setup" should be selected one after the other and provided with the correct parameters. If possible, go through the items in the given sequence.

The procedure is described below.

The following submenu points are available:

The submenu points described below.

Setup - Measurement loop name

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Here you can assign a suitable measurement loop name. Push the

"OK" key to start the processing. With the "+" key you change the sign and with the "->" key you jump to the next position.

You can enter names with max. 19 characters. The character set

comprises:

Capital letters from A … Z

•

Numbers from 0 … 9

•

6 Set up with the display and adjustment module

Special characters + - / _ blanks

•

Setup - Units

Setup - Probe length

Setup - Application Product type

Setup - Application - Application

In this menu item you select the distance unit and the temperature unit.

With the distance units you can choose between m, mm and ft and with the temperature units betwenn °C, °F and K.

In this menu item you can enter the probe length or have the length

determined automatically by the sensor system.

When choosing "Ye s ", then the probe length will be determined automatically. When choosing "No", you can enter the probe length

manually.

In this menu item you can select which type of medium you want to

measure. You can choose between liquid or bulk solid.

In this menu item, you can select the application. You can choose between level measurement and interface measurement. You can also choose between measurement in a vessel or in a bypass or

standpipe.

Note:

The selection of the application has a considerable inuence on all other menu items. Keep in mind that as you continue with the parameter adjustment, individual menu items are only optionally available.

You have the option of choosing the demonstration mode. This mode is only suitable for test and demonstration purposes. In this mode, the sensor ignores the parameters of the application and reacts immedi-

ately to each change.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Setup - Application - Medium, dielectric constant

Setup - Application - Gas phase

Setup - Application - Dielectric constant

In this menu item, you can dene the medium type (product). This menu item is only available if you have selected level measure-

ment under the menu item "Application".

You can choose between the following medium types:

Dielectricgure Medium type Examples

> 10 Water-based liq-

uids

3 … 10 Chemical mix-

tures

< 3 Hydrocarbons Solvents, oils, liquid gas

Acids, alcalis, water

Chlorobenzene, nitro lacquer, aniline, isocyanate, chloroform

This menu item is only available, if you have chosen interface meas-

urement under the menu item "Application". In this menu item you can enter if there is a superimposed gas phase in your application.

Only set the function to "Ye s ", if the gas phase is permanently pre-

sent.

This menu item is only available if you have selected interface meas-

urement under the menu item "Application". In this menu item you can choose the medium type of the upper medium.

You can enter the dielectric constant of the upper medium directly or have the value determined by the instrument. To do this you have to enter the measured or known distance to the interface.

Setup - Max. adjustment

evel

In this menu item you can enter the max. adjustment for the level. With interface measurement this is the maximum total level.

Adjust the requested percentage value with [+] and store with [OK].

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Enter the appropriate distance value in m (corresponding to the percentage value) for the full vessel. The distance refers to the sensor reference plane (seal surface of the process tting). Keep in mind that the max. level must lie below the dead band.

Setup - Min. adjustment

Lev

Setup - Max. adjustment Interface

In this menu item you can enter the min. adjustment for the level. With interface measurement this is the minimum total level.

Adjust the requested percentage value with [+] and store with [OK].

Enter the suitable distance value in m for the empty vessel (e.g. distance from the ange to the probe end) corresponding to the percentage value. The distance refers tot he sensor reference plane (seal surface of the process tting).

This menu item is only available if you have selected interface meas-

urement under the menu item "Application".

You can accept the adjustment of the level measurement also for the interface measurement. If you select "Yes", the current setting will be

displayed.

42279-EN-130612

If you have selected "No", you can enter the adjustment for the interface separately. Enter the requested percentage value.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

For the full vessel, enter the distance value in m matching the percentage value.

Setup - Min. adjustment Interf

ace

Setup - Damping

This menu item is only available if you have selected interface meas-

urement under the menu item "Application". If you have selected "Ye s " in the previous menu item (accept adjustment of the level measurement), the current setting will be displayed.

If you have selected "No", you can enter the adjustment for the interface measurement separately.

Enter the respective distance value in m for the empty vessel corresponding to the percentage value.

To damp process-dependent measured value uctuations, set an

integration time of 0 … 999 s in this menu item. If you have selected interface measurement under the menu item

"Application", you can adjust the damping for the level and the interface separately.

The default setting is a damping of 0 s.

Setup - Linearization

The linearization applies to the measured value indication and the current output. By activating the appropriate curve, the volume percentage of the vessel is displayed correctly. If the volume should not be displayed in percent but e.g. in l or kg, a scaling can be also set in the menu item "Display".

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Warning:

If a linearization curve is selected, the measuring signal is no longer necessarily linear to the lling height. This must be considered by the

user especially when adjusting the switching point on the limit signal transmitter.

In the following, you have to enter the values for your vessel, for example the vessel height and the socket correction.

For non-linear vessel forms, enter the vessel height und the socket

correction.

For the vessel height, you have to enter the total height of the vessel. For the socket correction you have to enter the height of the socket

above the upper edge of the vessel. If the socket is lower than the upper edge of the vessel, this value can also be negative.

+ h

- h

Fig. 25: Vessel height und socket correction value

D Vessel height +h Positive socket correction value

-h Negative socket correction value

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

6 Set up with the display and adjustment module

Setup - Scaling Level

Setup - Scaling Le

vel 1

Setup - Scaling Level 2

Setup/Scaling Interface

Since scaling is very extensive, scaling of the level value was divided

into two menu items.

In menu item "Level 1" you dene the scaling variable and the scaling unit for the level value on the display, e.g. volume in l.

Since scaling is very extensive, scaling of the level value was divided

into two menu items.

In menu item "Level 2" you dene the scaling format on the display and the scaling of the measured level value for 0 % and 100 %.

Since scaling is very extensive, scaling of the interface value was divided into two menu items.

Setup - Scaling Interface (1)

In menu item "Interface 1" you dene the scaling size and the scaling unit for the interface value on the display, e.g. volume in l.

You can accept the scaling of the level measurement also for the interface measurement. If you select "Ye s", the current setting is

displayed.

If you have selected "No", you can enter the scaling for the interface

separately.

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VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Setup - Scaling Interface (2)

Setup - Current output Size

Setup - Current output, adjustment

In menu item "Interface (2)" you dene the scaling format on the display and the scaling of the interface measured value for 0 % and 100 %.

In menu item"Current output, size" you determine which measured value the current output refers to.

In menu item "Current output, adjustment" you can assign a respective measured value to the current output.

Setup/Current output mode

In the menu item "Current output mode" you determine the output characteristics and reaction of the current output in case of failure.

42279-EN-130612

The default setting is output characteristics 4 … 20 mA, failure mode

< 3.6 mA.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Setup - Current output Min./Max.

Setup - Current output 2

Setup - HART variables (1)

In the menu item "Current output Min./Max.", you determine the reaction of the current output during operation.

The default setting is min. current 3.8 mA and max. current 20.5 mA.

If a supplementary electronics with a second current output is implemented in the instrument, then you can adjust the second current

output separately.

In menu item"Current output 2" you specify which measured value the second current output refers to.

The procedure corresponds to the previous settings of the standard current output. See "Setup - Current output".

Since the HART variables are very extensive, the indication was divided into two menu items.

In the menu "HART variables 1" you can have the rst HART value PV (primary value) and the second HART value SV (secondary value) of

the sensor displayed.

The values cannot be changed in the display and adjustment module. To change these values, you have to use the adjustment software

PAC Tw a re .

Setup - HART variables (2)

In the menu "HART variables 2" you can have the third HART value TV (third value) and the fourth HART value QV (quarter value) of the

sensor displayed.

The values cannot be changed in the display and adjustment module. To change these values, you have to use the adjustment software

PAC Tw a re .

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Setup - False signal suppression

The following circumstances cause interfering reections and can

inuence the measurement:

High sockets

•

Vessel installations such as struts

•

Note:

Proceed as follows:

Enter the actual distance from the sensor to the product surface.

All interfering signals in this section are detected by the sensor and

stored.

Note:

Check the distance to the product surface, because if an incorrect (too large) value is entered, the existing level will be saved as a false echo. The lling level would then no longer be detectable in this area.

If a false signal suppression has already been created in the sensor, the following menu window appears when selecting "False signal suppression":

Lock/release setup - Adjustment

The instrument carries out an automatic false signal suppression as soon as the probe is uncovered. The false signal suppression is

always updated.

The menu item "Delete" is used to completely delete an already created false signal suppression. This is useful if the saved false signal

suppression no longer matches the metrological conditions in the

vessel.

In the menu item "Lock/unlock adjustment", you can protect the sensor parameters against unauthorized modication. The PIN is activated/deactivated permanently.

The following adjustment functions are possible without entering the

PIN:

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

6 Set up with the display and adjustment module

Select menu items and show data

•

Read data from the sensor into the display and adjustment mod-

•

ule.

Caution:

With active PIN, adjustment via PACTware/DTM as well as other

systems is also blocked.

You can change the PIN number under "Additional adjustments PIN".

Display

Display - Menu language

Display - Displayed value 1

In the main menu point "Display", the individual submenu points should be selected subsequently and provided with the correct parameters to ensure the optimum adjustment of the display options. The procedure is described in the following.

The following submenu points are available:

The submenu points described below.

This menu item enables the setting of the requested national lan-

guage.

In the delivery status, the sensor is set to the ordered national language.

In this menu item, you dene the indication of the measured value on the display. You can display two dierent measured values. In this menu item, you dene measured value 1.

The default setting for the displayed value 1 is "Filling height Level".

Display - Displayed value 2

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

In this menu item, you dene the indication of the measured value on the display. You can display two dierent measured values. In this menu item, you dene measured value 2.

6 Set up with the display and adjustment module

The default setting for the displayed value 2 is the electronics temperature.

Display - Backlight

Diagnostics - Device status

Diagnostics - P

eak values

Distance

The optionally integrated background lighting can be adjusted via the

adjustment menu. The function depends on the height of the supply voltage, see "Technical data".

The lighting is switched o in the delivery status.

In this menu item, the device status is displayed.

The respective min. and max. measured value is saved in the sen-

sor. The two values are displayed in the menu item "Peak values, distance".

If you have selected interface measurement under the menu item "Setup - Application", the peak values of the interface measurement are displayed in addition to the peak values of the level measurement.

In another window you can carry out a reset of the two peak values

separately.

Diagnostics - Peak values Measurement certainty

The respective min. and max. measured values are saved in the

sensor. The two values are displayed in the menu item "Peak values, measurement certainty".

The measurement can be inuenced by the process conditions. In this menu item, the measurement certainty of the level measurement is displayed as percentage value. The higher the value, the more reliable the measurement. Values > 90 % indicate reliable measurement.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

6 Set up with the display and adjustment module

In another window you can carry out a reset of the two peak values

separately.

Diagnostics - Peak values Additional

Diagnostics - Echo cur

The respective min. and max. measured values are saved in the

sensor. The values are displayed in the menu item "Peak values Ad- ditional".

This menu item displays the peak values of the electronics tempera-

ture as well as the dielectric constant.

In another window you can carry out a reset of the two peak values

separately.

The menu item "Echo curve" shows the signal strength of the echoes

over the measuring range in V. The signal strength enables an evaluation of the quality of the measurement.

With the following functions you can zoom part sections of the echo curve.

"X-Zoom": Zoom function for the meas. distance

•

"Y-Zoom": 1, 2, 5 and 10x signal magnication in "V"

•

"Unzoom": Reset the presentation to the nominal measuring range

•

with single magnication

Diagnosis - Simulation

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

In this menu item you can simulate measured values via the current output. This allows the signal path to be tested, e.g. via downstream indicating instruments or the input card of the control system.

6 Set up with the display and adjustment module

Select the requested simulation size and adjust the requested value.

Caution:

During simulation, the simulated value is outputted as 4 … 20 mA current value and digital HART signal.

Push the [ESC] key to deactivate the simulation.

Information:

The simulation is terminated automatically 60 minutes after the last

key has been pushed.

Diagnostics - Echo curve memory

Additional settings - PIN

With the menu item "Setup" the echo curve it is possible to save at

the time of setup. This is generally recommended; for using the Asset Management functions it is necessary. If possible, the curve should be saved with a low level in the vessel.

With this, you can detect signal changes over the operating time. With the adjustment software PACTware and the PC, the high-resolution echo curve can be displayed and used to compare the echo curve of the setup with the actual echo curve.

The function "Echo curve memory" enables storing echo curves of

the measurement.

Under the sub-menu item "Echo curve memory" you can store the current echo curve.

Parameter settings for recording the echo curve and the settings of the echo curve itself can be carried out in the adjustment software

PAC Tw a re .

With the adjustment software PACTware and the PC the high-resolution echo curve can be displayed and used later on to assess the quality of the measurement.

42279-EN-130612

Entering a 4-digit PIN protects the sensor data against unauthorized

access and unintentional modication. In this menu item, the PIN is displayed or edited and changed. However, this menu item is only

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

available if adjustment is enabled in the menu "Lock/Release setup/ adjustment".

In delivery status, the PIN is "0000".

Additional adjustments Date Time

Additional adjustments

- Reset

In this menu item, the internal clock of the sensor is adjusted.

With a reset, certain parameter adjustments carried out by the user

are reset.

The following reset functions are available: Delivery status: Restoring the parameter settings at the time of ship-

ment from the factory incl. the order-specic settings. A created false signal suppression, user-programmable linearization curve as well as the measured value memory will be deleted.

Basic settings: Resetting the parameter settings incl. special pa-

rameters to the default values of the respective instrument. A created false signal suppression, user programmable linearization curve as well as the measured value memory will be deleted.

The following table shows the default values of the instrument. Depending on the instrument version or application, all menu items may not be available or some may be dierently assigned:

Setup

Menu item Default value Modiedvalue

Block adjustment Released

Measurement loop name Sensor

Units Distance unit: mm

Temperature unit: °C

Probe length Length of the probe Ex factory

Medium type Liquid

Application Level, vessel

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Menu item Default value Modiedvalue

Medium, dielectric constant Water-based, > 10

Superimposed gas phase Ye s

Dielectric gure, upper medium (TS) 1.5

Tube inner diameter

Max. adjustment - Level 100 %

Max. adjustment - Level Distance: 0.000 m(d) - note block-

Min. adjustment - Level

Min. adjustment - Level Distance: Probe length - take dead

Accept adjustment of the level measurement? Yes

Max. adjustment - Interface

Max. adjustment - Interface Distance: 0.000 m(d) - note block-

Min. adjustment - Interface

Min. adjustment - Interface Distance: Probe length - take dead

Integration time - Level

Integration time - Interface 0.0 s

Linearization type Linear

Linearization - Socket correction

Linearization - Vessel height Probe length

Scaling size - Level Volume in l

Scaling unit - Level Litres

Scaling format - Level Without decimal positions

Scaling level - 100 % correspond to 100

Scaling level - 0 % correspond to 0

Accept scaling of the level measurement Ye s

Scaling variable - Interface Volume

Scaling unit - Interface Litres

Scaling format - Interface Without decimal positions

Scaling interface - 100 % correspond to 100

Scaling interface - 0 % correspond to 0

Current output, output variable First HART variable (PV)

Current output - Output characteristics

Current output - Reaction in case of failure ≤ 3.6 mA

Current output - Min. 3.8 mA

200 mm

ing distances

0 %

band into account

100 %

ing distances

0 %

band into account

0.0 s

0 mm

Lin. percent - Level

0 … 100 % correspond to

4 … 20 mA

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Menu item Default value Modiedvalue

Current output - Max. 20.5 mA

Current output 2 - Output variable Second HART variable (SV)

Current output 2 - Output characteristics

Current output 2 - Reaction in case of failure ≤ 3.6 mA

Current output - Min. 3.8 mA

Current output - Max. 20.5 mA

Third HART variable (TV) Measurement certainty, level

Fourth HART variable (QV) Electronics temperature

Distance - Level

0 … 100 % correspond to

4 … 20 mA

Display

Menu item Default value Modiedvalue

Language Order-specic

Displayed value 1 Filling height Level

Displayed value 2 Electronics temperature

Backlight Switched o

Diagnostics

Menu item Default value Modiedvalue

Status signals - Function control Switched on

Status signals - Out of specication Switched o

Status signals - Maintenance Switched o

Device memory - Echo curve memory Stopped

Device memory - Measured value memory Started

Device memory - Measured value memory Measured values

Device memory - Measured value memory - Recording in time interval

Device memory - Measured value memory - Recording with measured value dierence

Device memory - Measured value memory - Start with measured value

Device memory - Measured value memory - Stop with measured value

Device memory - Measured value memory - Stop recording when memory is full

Distance level, percentage value level, reliability level, electronics

temperature

3 min.

15 %

Not active

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Additional adjustments

Menu item Default value Modiedvalue

PIN 0000

Date Actual date

Time Actual time

Time - Format

Probe type Device-specic

24 hours

Additional adjustments Copy instrument settings

Additional adjustments Probe type

The instrument settings are copied with this function. The following

functions are available:

Read from sensor: Read data from sensor and store into the

•

display and adjustment module

Write into sensor: Store data from the display and adjustment

•

module back to the sensor

The following data or settings for adjustment of the display and adjustment module are saved:

All data of the menu "Setup" and "Display"

•

In the menu "Additional adjustments" the items "Reset, Date/Time"

•

Special parameters

•

The copied data are permanently saved in an EEPROM memory in the display and adjustment module and remain there even in case of power failure. From there, they can be written into one or more sensors or kept as backup for a possible electronics exchange.

Note:

Before the data are stored in the sensor, a check is carried out to determine if the data t the sensor. If the data do not t, a fault signal is triggered or the function is blocked. When data are being written into the sensor, the display shows which instrument type the data originate from and which TAG-no. this sensor had.

In this menu item you can select the type and size of your probe from a list of all possible probes. This is necessary to adapt the electronics

optimally to the probe.

Additional adjustments Special parameters

42279-EN-130612

In this menu item you gain access to the protected area where

you can enter special parameters. In exceptional cases, individual parameters can be modied in order to adapt the sensor to special

requirements.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Change the settings of the special parameters only after having contacted our service sta.

Additional adjustments HART mode

o - Instrument name

Inf

The sensor oers the HART modes "Analogue current output" and

"Fix current (4 mA)". In this menu item you determine the HART mode

and enter the address with Multidrop mode.

In the mode "Fixed current output" up to 63 sensors can be operated

on one two-wire cable (Multidrop operation). An address between 0 and 63 must be assigned to each sensor.

If you select the function "Analogue current output" and also enter an address number, you can output a 4 … 20 mA signal in Multidrop

mode.

With the mode "

Fixed current (4 mA)" a xed 4 mA signal is outputted

independently of the actual level.

The default setting is "Analogue current output" and the address 00.

In this menu, you read out the instrument name and the instrument

serial number:

Info - Instrument version

In this menu item, the hardware and software version of the sensor is

displayed.

Info - Factory calibration date

In this menu item, the date of factory calibration of the sensor as well as the date of the last change of sensor parameters are displayed via the display and adjustment module or via the PC.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

6 Set up with the display and adjustment module

Info - Sensor characteristics

In this menu item, the features of the sensor such as approval, process tting, seal, measuring range, electronics, housing and others

are displayed.

6.5 Saving the parameter adjustment data

We recommended noting the adjusted data, e.g. in this operating instructions manual, and archiving them afterwards. They are thus available for multiple use or service purposes.

If the instrument is equipped with a display and adjustment module, the data in the sensor can be saved in the display and adjustment

module. The procedure is described in the operating instructions

manual "Display and adjustment module" in the menu item "Copy sensor data". The data remain there permanently even if the sensor

power supply fails. The following data or settings for adjustment of the display and ad-

justment module are saved:

All data of the menu "Setup" and "Display"

•

In the menu "Additional adjustments" the items "Sensor-specic

•

units, temperature unit and linearization" The values of the user programmable linearization curve

•

The function can also be used to transfer settings from one instrument to another instrument of the same type. If it is necessary to exchange a sensor, the display and adjustment module is inserted

into the replacement instrument and the data are likewise written into

the sensor via the menu item "Copy sensor data".

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Via the interface adapter directly on the sensor

Via the inter

face adapter

and HART

7 Setup with PACTware

7.1 Connect the PC

Fig. 26: Connection of the PC directly to the sensor via the interface adapter

1 USB cable to the PC 2 Interface adapter VEGACONNECT 3 Sensor

2 4

Fig. 27: Connecting the PC via HART to the signal cable

1 Sensor

2 HARTresistance250Ω(optionaldependingonprocessing)

3 Connection cable with 2 mm pins and terminals 4 Processing system/PLC/Voltage supply 5 Interface adapter, for example VEGACONNECT 4

Note:

With power supply units with integrated HART resistance (internal

resistance approx. 250 Ω), an additional external resistance is not necessary. This applies, e.g. to the VEGA instruments VEGATRENN 149A, VEGAMET 381, VEGAMET 391. Common Ex separators are also usually equipped with a sucient current limitation resistance. In

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

LOCK

TWIST

USB

OPEN

7 Setup with PACTware

Prerequisites

such cases, the interface converter can be connected parallel to the 4 … 20 mA cable (dashed line in the previous illustration).

7.2 Parameter adjustment with PACTware

For parameter adjustment of the sensor via a Windows PC, the conguration software PACTware and a suitable instrument driver (DTM)

according to FDT standard are required. The up-to-date 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 FDT standard.

Note:

To ensure that all instrument functions are supported, you should always use the latest DTM Collection. Furthermore, not all described functions are included in older rmware versions. You can download the latest instrument software from our homepage. A description of the update procedure is also available in the Internet.

Further setup steps are described in the operating instructions manu-

al "DTM Collection/PACTware" attached to each DTM Collection and which can also be downloaded from the Internet. Detailed descriptions are available in the online help of PACTware and the DTMs.

Standard/Full version

Fig. 28: Example of a DTM view

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 conguration simplies the adjustment considerably. Saving/printing the project as well as import/export functions are also part of the standard version.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

General information

7 Setup with PACTware

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.

The standard version is available as a download under www.vega. com/downloads and "Software". The full version is available on CD from the agency serving you.

7.3 Set up with the quick setup

The quick setup is another option for parameter adjustment of the

sensor. It allows fast, convenient adjustment of the most important

parameters to adapt the sensor quickly to standard applications. To

use it, select the function "Quick setup" in the start screen.

Fig. 29: Select quick setup

1 Quick setup 2 Extended adjustment 3 Maintenance

Quick setup

With quick setup you can carry out the parameter adjustment of VEGAFLEX 81 for your application in just a few simple steps. The assistant-driven adjustment includes the basic settings for simple,

reliable setup and commissioning.

Information:

If the function is inactive, then possibly no instrument is connected.

Check the connection to the instrument.

Extended adjustment

With the extended adjustment, you carry out the parameter adjustment for the instrument via the clear menu structure in the DTM

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

7 Setup with PACTware

(Device Type Manager). This enables additional and special settings over and above those oered by quick setup.

Maintenance

Under the menu item "Maintenance" you get comprehensive and important support for servicing and maintenance. You can call up diagnostic functions and carry out an electronics exchange or a software update.

Start quick setup

Step 1

Instrumentconguration

Step 2 Application

Click to the button "Quick setup", to start the assistant-driven adjustment for a simplied and reliable setup.

Device name

Here, you can nd the instrument name. You cannot change this line because the instrument name is unmodiably saved in the instrument.

Serial number

Here, you can nd the serial number of your instrument. You cannot change this line because the serial number is unmodiably saved in

the instrument.

Measurement loop name

Here you can enter a suitable measurement loop name for your VEGAFLEX 81. You can enter a name with max. 19 characters. You can use capital and small letters as well as numbers. The following special characters are also possible: + - . : , ( ) / < >

Probelengthmodied?

If you have modied the probe length, this must be entered in the selection eld.

If you select "No", then the instrument uses automatically the

•

preset length of the default setting. If you select "Yes ", then you can enter in another eld the modied

•

length of the instrument.

Probe length L from seal surface

If you have modied the length of the probe, you can enter in this eld the modied probe length. Keep the selected unit in mind.

Determine probe length automatically

If you do not know the probe length, you can have the length of the probe determined automatically. The requirement for this is a probe unrestricted and not covered by the medium.

Click to "Carry out now", to start the automatic length determination.

Medium type

Here you can see which medium type your instrument is suitable for. If this function is inactive, the medium type your instrument is suitable for was already preset.

Information:

In special cases you can change the medium type. This setting can be

changed under "Extended adjustment".

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

7 Setup with PACTware

Application

In this eld you can select the application you want to use your instrument for. You have the following selection options:

Level in the vessel

•

Level in the bypass/standpipe

•

Interface in the vessel

•

Interface in the bypass/standpipe

•

Demonstration mode

•

Level measurement: If you select "Level", you can select the properties of the medium in another eld.

Interface measurement: If you select "Interface", the instrument needs more information, such as the distance to the interface, the dielectric constant of the upper medium or whether or not there is a superim-

posed gas phase.

Demonstration mode: This mode is only suitable for test and demonstration purposes. In this mode, the sensor ignores all parameters and reacts immediately to all measured value changes within the

measuring range.

Application - Level measurement

The level measurement refers to the product surface which is the limit

to the gas phase.

Liquids

•

– Solvents, oils, LPG - dielectric constant < 3 – Chemical mixtures - dielectric constant 3 … 10 – Water-based - dielectric constant > 10

Bulk solids

•

– Dusts, wood chips - dielectric constant < 1.5 – Granules, dusts, powders - dielectric constant 1.5 … 3 – Cereals, our - dielectric constant > 3

Application - Interface measurement

The interface measurement refers to the phase limit between two liquids. The total level is also available as a measured value.

Superimposed gas phase present

•

– Check if there is a superimposed gas phase in the vessel. This

is always the case if the total level never touches the process tting.

Properties

•

– Here you can enter the dielectric constant of the upper medium – As an alternative you can enter the distance to the interface

Step 3 Adjustment

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Adjustment for the level measurement

If you have selected level measurement in the previous menu, then you can enter the values for the min. and max. adjustment. The value to be entered refers to the distance from the sealing surface of the process tting (sensor reference plane) to the surface of the product.

Adjustment for the level and interface measurement

If you have selected interface measurement in the previous menu, then you can enter the values for the min. and max. adjustment of

7 Setup with PACTware

level and interface or accept the values of the level measurement. The entered value refers to the distance from the sealing surface of the process tting (sensor reference plane) to the total level or interface.

Step 4 Linearization

Step 5 Setting - Output signal

Step 6 Sensor optimiz

ation

Linearization is required if the measured value should be outputted in proportion to the volume and not the level. The linearization acts identically on the level and the interface measurement. You can nd further linearization types in the extended adjustment.

If you have a non-linear vessel, you can select here the respective linearization curve.

Linear

•

Spherical tank

•

Horizontal cylindrical tank

•

You must enter the following vessel dimensions with non-linear conditions:

Height of the socket h

•

Vessel height D

•

In this window you can adjust the output signal. When the function is inactive, you can change the settings via the "Extended adjustment".

These settings allow you to optimize the sensor. With them you can

compare a sounded distance with the indicated value and correct it, if

necessary.

Probe immersed in the liquid (covered)

Select whether or not the probe is immersed in the medium.

Measured distance to the medium

If the probe is immersed in the medium, you can enter here the measured distance to the medium.

Displayeddistancecorrect?

Is the displayed distance value correct? If you have the possibility, you

can enter here the sounded distance to the medium.

False signal suppression

With this function you can carry out the automatic false signal suppression. We recommend carrying out false signal suppression in any

case.

Step 7 Additional settings

When the setup of the instrument is nished, additional settings can

be made. These are various backups and the locking of the instrument against unauthorised or inadvertent adjustment.

Prepareabackupleoftheinstrumentparameteradjustment?

For backup purposes, the current parameter adjustment of the instrument is stored in a le. You can use this le later on to restore the

instrument parameter adjustment. The complete data set is down-

loaded from the device. This procedure can last several minutes.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

7 Setup with PACTware

Createinstrumentdocumentation?

This function is used to print or create a PDF le of the current parameter adjustment. To read the PDF le, you need a suitable program (for example Acrobat Reader). To print or create the PDF le, all data are downloaded from the device. For this function, the full version of the DTM Collection is required. This procedure can last several

minutes.

Storeechocurveofthesetupinthesensor?

Have you completed the initial setup of the instrument? In such case, we recommend storing the current signal conditions in the device for

later instrument tests and diagnostics.

LockadjustmentwithPINaftersetting?

The instrument is locked with the current PIN. A parameter adjust-

ment is possible only after the PIN is entered again.

7.4 Saving the parameter adjustment data

We recommend documenting or saving the parameter adjustment data via PACTware. That way the data are available for multiple use or service purposes.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

8 Set up with other systems

8.1 DD adjustment programs

Device descriptions as Enhanced Device Description (EDD) are available for DD adjustment programs such as, for example, AMS™

and PDM.

The les can be downloaded at www.vega.com/downloads under "Software".

8.2 Field Communicator 375, 475

Device descriptions for the instrument are available as EDD for parameter adjustment with the Field Communicator 375 or 475.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

9 Diagnostics and service

9.1 Maintenance

If the device is used correctly, no maintenance is required in normal

operation.

9.2 Diagnosis memory

The instrument has several memories which are available for diagnosis purposes. The data remain even with voltage interruption.

Measured value memory

ent memory

Up to 100,000 measured values can be stored in the sensor in a ring memory. Each entry contains date/time as well as the respective measured value. Storable values are for example:

Distance

•

Filling height

•

Percentage value

•

Lin. percent

•

Scaled

•

Current value

•

Meas. reliability

•

Electronics temperature

•

When the instrument is shipped, the measured value memory is active and stores distance, measurement certainty and electronics temperature every 3 minutes.

In "Extended adjustment" you can select the respective measured values.

The requested values and recording conditions are set via a PC with

PACTware/DTM or the control system with EDD. Data are thus read out and also reset.

Up to 500 events are automatically stored with a time stamp in the sensor (non-deletable). Each entry contains date/time, event type, event description and value. Event types are for example:

Modication of a parameter

•

Switch-on and switch-o times

•

Status messages (according to NE 107)

•

Error messages (according to NE 107)

•

The data are read out via a PC with PACTware/DTM or the control

system with EDD.

Echo curve memory

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

The echo curves are stored with date and time and the corresponding

echo data. The memory is divided into two sections: Echo curve of the setup: This is used as reference echo curve for

the measurement conditions during setup. Changes in the measurement conditions during operation or buildup on the sensor can thus

be recognized. The echo curve of the setup is stored via:

PC with PACTware/DTM

•

Control system with EDD

•

9 Diagnostics and service

Display and adjustment module

•

Further echo curves: Up to 10 echo curves can be stored in a ring buer in this memory section. Further echo curves are stored via:

PC with PACTware/DTM

•

Control system with EDD

•

Display and adjustment module

•

9.3 Status messages

The instrument features self-monitoring and diagnostics according to NE 107 and VDI/VDE 2650. In addition to the status messages in the following tables there are more detailed error messages available under the menu item "Diagnostics" via the display and adjustment module, PACTware/DTM and EDD.

Status messages

The status messages are divided into the following categories:

Failure

•

Function check

•

Out of specication

•

Maintenance requirement

•

and explained by pictographs:

41 2 3

Fig. 30: Pictographs of the status messages

1 Failure - red

2 Outofspecication-yellow

3 Function check - orange 4 Maintenance - blue

Failure: Due to a malfunction in the instrument, a failure message is

outputted.

This status message is always active. It cannot be deactivated by the

user.

Function check: The instrument is in operation, the measured value is temporarily invalid (for example during simulation).

This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD.

Outofspecication: The measured value is unstable because the instrument specication is exceeded (e.g. electronics temperature).

This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD.

Maintenance: Due to external inuences, the instrument function is limited. The measurement is aected, but the measured value is

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

9 Diagnostics and service

still valid. Plan in maintenance for the instrument because a failure is expected in the near future (e.g. due to buildup).

This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD.

Failure

The following table shows the error codes in the status message

"Failure" and gives information on the reason and rectication. Keep in mind that some information is only valid with four-wire instruments.

Code

Text message

F013

no measured value available

F017

Adjustment span too small

F025

Error in the linearization table

F036

No operable

software

F040

Error in the electronics

F041

Probe loss

F080 General soft-

ware error

F105

Measured value is determined

F113

Communication error

F125

Unpermissible electronics temperature

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Cause Rectication

– Sensor does not detect an

echo during operation

– Process component or

probe contaminated or

defective

– Adjustment not within

specication

– Index markers are not con-

tinuously rising, for examle unlogical value pairs

– Failed or interrupted soft-

ware update

– Hardware defect – Exchanging the electronics

– Cable probe broken or rod

probe defective

– General software error – Separate operating voltage

– The instrument is still in the

start phase, the measured value could not yet be

determined

– EMC interferences – Transmission error with the

external communication

with 4-wire power supply unit

– Temperature of the elec-

tronics in the non-specied

section

– Check or correct installation

and/or parameter adjustment

– Clean or exchange process

component or probe

– Change adjustment accord-

ing to the limit values (difference between min. and max. ≥ 10 mm)

– Check values of the lineari-

zation table

– Delete/create a new lineari-

zation table

– Repeat software update – Check electronics version – Exchanging the electronics – Send instrument for repair

– Send instrument for repair

– Check probe and exchange,

if necessary

briey

– Wait for the end of the

switch-on phase

– Duration depending on

the version and parameter adjustment max. 5 min.

– Remove EMC inuences – Exchange 4-wire power

supply unit or electronics

– Check ambient temperature – Isolate electronics – Use instrument with higher

temperature range

9 Diagnostics and service

Function check

Code

Text message

F260

Error in the calibration

F261

Error in the instrument settings

F264

Installation/ Setup error

F265

Measurement function disturbed

F266

Impermissible operating

voltage

F267

No executable sensor soft-

ware

Cause Rectication

– Error in the calibration car-

ried out in the factory

– Error in the EEPROM

– Error during setup – Error when carrying out a

reset

– False signal suppression

faulty

– Error during setup – Check or correct installation

– Sensor no longer carries

out a measurement

– Operating voltage below

specied range

– Sensor cannot start – Exchanging the electronics

– Exchanging the electronics – Send instrument for repair

– Carry out a reset – Repeat setup

and/or parameter adjustment

– Check probe length

– Carry out a reset – Separate operating voltage

briey

– Check electrical connection – if necessary, increase

operating voltage

– Send instrument for repair

The following table shows the error codes and text messages in the

status message "Function check" and provides information on causes as well as corrective measures.

Code

Text message

C700

Simulation ac-

tive

Cause Rectication

– A simulation is active – Finish simulation

– Wait for the automatic end

after 60 mins.

Outofspecication

The following table shows the error codes and text messages in the

status message "Outofspecication" and provides information on causes as well as corrective measures.

Code

Text message

S600

Unpermissible electronics temperature

Cause Rectication

– Temperature of the pro-

cessing electronics in the

non-specied section

– Check ambient temperature – Isolate electronics – Use instrument with higher

temperature range

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

9 Diagnostics and service

Maintenance

Code

Text message

S601

Overlling

S602 Level with-

in the search range, compensation echo

S603

Impermissible operating

voltage

Cause Rectication

– Level echo in the close

range not available

– Compensation echo super-

imposed by medium

– Operating voltage below

specied range

– Reduce level – 100 % adjustment: Increase

value

– Check mounting socket – Remove possible interfering

signals in the close range

– Use coaxial probe

– 100 % adjustment: Increase

value

– Check electrical connection – if necessary, increase

operating voltage

The following table shows the error codes and text messages in the

status message "Maintenance" and provides information on causes as well as corrective measures.

Code

Text message

M500

Error in the delivery status

M501

Error in the

non-active

linearization table

M502

Error in the event memory

M503

Reliability too low

M504

Error on an

device interface

Cause Rectication

– With the reset to delivery

status, the data could not

be restored

– Hardware error EEPROM – Exchanging the electronics

– Measurement certainty is

too low for a reliable measurement

– Process component or

probe contaminated or

defective

– Hardware defect – Exchanging the electronics

– Repeat reset – Load XML le with sensor

data into the sensor

– Send instrument for repair

– Check installation and

process conditions

– Clean or exchange process

component or probe

– Send instrument for repair

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

9 Diagnostics and service

Reaction when malfunctions occur

Procedure for fault recti-

cation

Code

Text message

M505

no measured value available

M506

Installation/ Setup error

M507

Error in the instrument settings

Cause Rectication

– Sensor does not detect an

echo during operation

– Process component or

probe contaminated or

defective

– Error during setup – Check and correct instal-

– Error during setup – Error when carrying out a

reset

– False signal suppression

faulty

– Check and correct instal-

lation and/or parameter adjustment

– Clean or exchange process

component or probe

lation and/or parameter adjustment

– Check probe length

– Carry out reset and repeat

setup

9.4 Rectify faults

The operator of the system is responsible for taking suitable meas-

ures to rectify faults.

The rst measures are:

Evaluation of fault messages, for example via the display and

•

adjustment module Checking the output signal

•

Treatment of measurement errors

•

Further comprehensive diagnostics options oer a PC with the software PACTware and the suitable DTM. In many cases, the reasons can be determined in this way and faults can be rectied.

Check the 4 … 20 mA signal

Connect a multimeter in the suitable measuring range according to

the wiring plan. The following table describes possible errors in the current signal and helps to remove them:

Error Cause Rectication

4 … 20 mA signal not stable

– Level uctua-

tions

– Set damping according to the

instrument via the display and

adjustment module or PACTware/ DTM

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

9 Diagnostics and service

Error Cause Rectication

4 … 20 mA signal missing

Current signal greater than 22 mA or less than 3.6 mA

– Electrical con-

nection faulty

– Voltage supply

missing

– Operating volt-

age too low or load resistance too high

– Electronics

module in the

sensor defective

– Check connection according to

chapter "Connection steps" and if necessary, correct according to chapter "Wiring plan"

– Check cables for breaks; repair if

necessary

– Check, adapt if necessary

– Exchange the instrument or send it

in for repair

Treatment of measurement errors

The below tables show typical examples for application-relevant

measurement errors. There are two measurement errors:

Constant level

•

Filling

•

Emptying

•

The images in column "Error pattern" show the real level with a broken line and the level displayed by the sensor as a continuous line.

Level

Fig. 31: The broken line 1 shows the real level, the continuous line 2 shows the level displayed by the sensor

Note:

Wherever the sensor displays a constant value, the reason could

•

also be the fault setting of the current output to "Hold value" In case of a too low level indication, the reason could be a line

•

resistance that is too high

time

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

9 Diagnostics and service

time

Measurement error with constant level

Fault description Error pattern Cause Rectication

1. Measured value

shows a too low or too

high level

Level

– Min./max. adjustment not

correct

– Wrong linearization curve – Adapt linearization curve

– Running time error (small

– Adapt min./max. adjustment

– Repeat setup

measurement error close to

100 %/serious error close to 0 %)

2. Measured value jumps towards 100 %

Level

– Due to the process, the ampli-

tude of the product echo sinks

– Carry out a false signal sup-

pression

– A false signal suppression was

not carried out

– Amplitude or position of a

false signal has changed (e.g. buildup); false signal suppres-

sion no longer matches

– Determine the reason for the

changed false signals, carry out false signal suppression, e.g.

with buildup

Measurementerrorduringlling

Fault description Error pattern Cause Rectication

3. Measured value remains in the area of the bottom during lling

4. Measured value re-

mains momentarily unchanged during lling and then jumps to

the correct level

5. Measured value

jumps sporadically to

100 % during lling

Level

– Echo from the probe end larger

than the product echo, for example, with products with

Level

εr < 2.5 oil-based, solvents, etc.

– Turbulence on the product

surface, quick lling

– Changing condensation or

contamination on the probe

– Check parameter "Medium"

and "Vessel height", adapt if

necessary

– Check parameters, change if

necessary, e.g. in dosing vessel, reactor

– Carry out a false signal sup-

pression

6. Measured value jumps to ≥ 100 % or

0 m distance

Level

– Level echo is no longer

detected in the close range

due to false signals in the close

range. The sensor goes into

overll protection mode. The

– Eliminate false signals in the

close range

– Check installation conditions – If possible, switch o the func-

tion "Overll protection"

max. level (0 m distance) as

well as the status message "Overll protection" are outputted.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

9 Diagnostics and service

time

Measurement error during emptying

Fault description Error pattern Cause Rectication

7. Measured value remains unchanged in the close range during emptying

8. Measured value remains reproducible in one position during emptying

Level

– False echo larger than the level

echo

– Level echo too small

– Stored false signals in this

position are larger than the

level echo

– Eliminate false signals in the

close range

– Remove contamination on the

probe. After having removed the source of the false signals, the false signal suppression

must be deleted.

– Carry out a new false signal

suppression

– Delete false signal memory – Carry out a new false signal

suppression

Reaction after fault recti-

cation

24 hour service hotline

Depending on the reason for the fault and the measures taken, the steps described in chapter "Setup" must be carried out again or must be checked for plausibility and completeness.

Should these measures not be successful, please call in urgent cases the VEGA service hotline under the phone no.

+49 1805 858550.

The hotline is also available outside normal working hours, seven

days a week around the clock.

Since we oer this service worldwide, the support is provided in English. The service itself is free of charge, the only costs involved are

the normal call charges.

9.5 Exchanging the electronics module

If the electronics module is defective, it can be replaced by the user. In Ex applications only one instrument and one electronics module

with respective Ex approval may be used. If there is no electronics module available on site, the electronics

module can be ordered through the agency serving you. The electronics modules are adapted to the respective sensor and dier in signal output or voltage supply.

The new electronics module must be loaded with the default settings of the sensor. These are the options:

In the factory

•

Or on site by the user

•

In both cases, the serial number of the sensor is needed. The serial numbers are stated on the type label of the instrument, on the inside of the housing as well as on the delivery note.

When loading on site, rst of all the order data must be downloaded from the Internet (see operating instructions manual "Electronics module").

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

9 Diagnostics and service

9.6 Software update

The following components are required to update the sensor software:

Sensor

•

Voltage supply

•

Interface adapter VEGACONNECT

•

PC with PACTware

•

Current sensor software as le

•

You can nd the actual sensor software as well as detailed information of the procedure under "www.vega.com/downloads" and "Software".

You can nd information about the installation in the download le.

Caution:

Instruments with approvals can be bound to certain software versions. Therefore make sure that the approval remains eective with a software update.

You can nd detailed information on www.vega.com/downloads and "Approvals".

9.7 How to proceed in case of repair

You can nd a repair form as well as detailed information on how to

proceed under www.vega.com/downloads and "Formsandcerti- cates".

By doing this you help us carry out the repair quickly and without having to call back for needed information.

If a repair is necessary, please proceed as follows:

Print and ll out one form per instrument

•

Clean the instrument and pack it damage-proof

•

Attach the completed form and, if need be, also a safety data

•

sheet outside on the packaging

Please contact for the return shipment the agency serving you. You

•

can nd the agency on our home page www.vega.com.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

10 Dismounting

10.1 Dismounting steps

Warning:

Before dismounting, be aware of dangerous process conditions such as e.g. pressure in the vessel, high temperatures, corrosive or toxic

products etc.

Take note of chapters "Mounting" and "Connecting to power supply" and carry out the listed steps in reverse order.

10.2 Disposal

The instrument consists of materials which can be recycled by specialised recycling companies. We use recyclable materials and have

designed the parts to be easily separable.

Correct disposal avoids negative eects on humans and the environment and ensures recycling of useful raw materials.

Materials: see chapter "Technical data" If you have no way to dispose of the old instrument properly, please

WEEE directive 2002/96/EG

This instrument is not subject to the WEEE directive 2002/96/EG and the respective national laws. Pass the instrument directly on to a spe-

cialised recycling company and do not use the municipal collecting

points. These may be used only for privately used products according to the WEEE directive.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

11.1 Technical data

General data

316L corresponds to 1.4404 or 1.4435 Materials, wetted parts

Ʋ Process tting 316L and Aluminium oxide-ceramic 99.7 % (Al2O3),

Ʋ Process seal on the instrument side

(rod leadthrough)

Ʋ Process tting - for ammonia applica-

tions

Ʋ Process seal on the instrument side -

for ammonia applications

Ʋ Process seal On site (instruments with thread: Klingersil C-4400 is

Ʋ Inner conductor (up to the separation

rod)

Ʋ Tube: ø 21.3 mm (0.839 in) 316L or Hastelloy C22 (2.4602) Ʋ Tube: ø 42.2 mm (1.661 in) 316L or Hastelloy C22 (2.4602)

Materials, non-wetted parts

Ʋ Plastic housing plastic PBT (Polyester) Ʋ Aluminium die-casting housing Aluminium die-casting AlSi10Mg, powder-coated - basis:

Ʋ Stainless steel housing - precision

casting

Ʋ Stainless steel housing, electropol-

ished

Ʋ Second line of defence (optional) Borosilicate glass GPC 540 Ʋ Seal between housing and housing

cover

Ʋ Inspection window in housing cover

(optional)

Ʋ Ground terminal 316L

Ohmic contact Between ground terminal, process tting and probe

Process ttings - tube: ø 21.3 mm (0.839 in)

Ʋ Pipe thread, cylindrical (ISO 228 T1) G¾, G1, G1½ according to DIN 3852-A Ʋ American pipe thread, conical

(ASME B1.20.1)

Ʋ Flanges e.g. DIN from DN 25, ANSI from 1"

Process ttings - tube: ø 42.2 mm (1.661 in)

Hastelloy C22 (2.4602) and Aluminium oxide-ceramic

99.7 % (Al2O3) FKM (SHS FPM 70C3 GLT), FFKM (Kalrez 6375),

EPDM (A+P 75.5/KW75F)

316L

Borosilicate glass GPC 540

attached)

316L

Polyester

316L

NBR (stainless steel housing, precision casting), silicone (aluminium/plastic housing; stainless steel housng,

electropolished)

Polycarbonate (with Ex d version: glass)

¾ NPT, 1 NPT, 1½ NPT

42279-EN-130612

Not suitable for steam applications

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Ʋ Pipe thread, cylindrical (ISO 228 T1) G1½ according to DIN 3852-A Ʋ American pipe thread, conical

1½ NPT

(ASME B1.20.1)

Ʋ Flanges DIN from DN 50, ANSI from 2"

Weight

Ʋ Instrument weight (depending on

approx. 0.8 … 8 kg (0.176 … 17.64 lbs)

process tting)

Ʋ Tube: ø 21.3 mm (0.839 in) approx. 1110 g/m (11.9 oz/ft) Ʋ Tube: ø 42.2 mm (1.661 in) approx. 3100 g/m (33.3 oz/ft)

Probe length L (from seal surface)

Ʋ Tube: ø 21.3 mm (0.839 in) up to 6 m (19.69 ft) Ʋ Tube: ø 42.2 mm (1.661 in) up to 6 m (19.69 ft) Ʋ Trimming accuracy - tube ±1 mm

Lateral load

Ʋ Tube: ø 21.3 mm (0.839 in) 60 Nm (44 lbf ft) Ʋ Tube: ø 42.2 mm (1.661 in) 300 Nm (221 lbf ft)

Torque for NPT cable glands and Conduit tubes

Ʋ Plastic housing max. 10 Nm (7.376 lbf ft) Ʋ Aluminium/Stainless steel housing max. 50 Nm (36.88 lbf ft)

Input variable

Measured variable Level of liquids Min. dielectric constant of the medium ε

≥ 1.4

11 Supplement

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

Fig. 40: Measuring ranges - VEGAFLEX 81

1 Reference plane 2 Probe length L 3 Measuring range (default setting refers to the measuring range in water) 4 Upper dead band (see diagrams under Accuracy - grey section) 5 Lower dead band (see diagrams under Accuracy - grey section)

Output variable

Output signal

Range of the output signal 3.8 … 20.5 mA/HART (default setting) Fullled HART specication 7

Signal resolution Failure signal current output (adjustable) Last valid measured value, ≥ 21 mA, ≤ 3.6 mA

Max. output current 21.5 mA

Starting current ≤ 10 mA for 5 ms after switching on, ≤ 3.6 mA

4 … 20 mA/HART

0.3 µA

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

Load see load under Power supply

Damping (63 % of the input variable),

0 … 999 s

adjustable

HART output values according to HART 7 (default setting)

Ʋ First HART value (PV) Linearised percentage value, level (current output 1) Ʋ Second HART value (SV) Distance to level (current output 2 - if available) Ʋ Third HART value (TV) Measurement certainty, level Ʋ Fourth HART value (QV) Electronics temperature

Ex-d-ia versions are not suitable for HART multidrop operation Indication value - DIsplay and adjustment module

Ʋ Displayed value 1 Filling height Level Ʋ Displayed value 2 Electronics temperature

Resolution, digital

< 1 mm (0.039 in)

Output variable - Second current output

For details on the operating voltage see chapter "Voltage supply"

Output signal

4 … 20 mA (passive)

Range of the output signal 3.8 … 20.5 mA (default setting)

Signal resolution 0.3 µA Failure signal current output (adjustable) Last valid measured value, ≥ 21 mA, ≤ 3.6 mA

Max. output current 21.5 mA

Starting current ≤ 10 mA for 5 ms after switching on, ≤ 3.6 mA Load Load resistor, see chapter "Voltage supply"

Damping (63 % of the input variable),

0 … 999 s

adjustable

Indication value - DIsplay and adjustment module

Ʋ Displayed value 1 Filling height Level Ʋ Displayed value 2 Electronics temperature

Resolution, digital

< 1 mm (0.039 in)

Accuracy (according to DIN EN 60770-1)

Process reference conditions according to DIN EN 61298-1

Ʋ Temperature +18 … +30 °C (+64 … +86 °F) Ʋ Relative humidity 45 … 75 % Ʋ Air pressure +860 … +1060 mbar/+86 … +106 kPa

(+12.5 … +15.4 psig)

Installation reference conditions

Ʋ Min. distance to installations > 500 mm (19.69 in)

The output values can be assigned individually

The indication values can be assigned individually

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

Ʋ Vessel metallic, ø 1 m (3.281 ft), centric installation, process

tting ush with the vessel ceiling

Ʋ Medium Water/Oil (dielectric constant ~2.0)

Ʋ Installation Probe end does not touch the vessel bottom

Sensor parameter adjustment No gating out of false signals carried out

Typical deviation - Interface measure-

± 5 mm (0.197 in)

ment

Typical deviation - Total level interface

± 5 mm (0.197 in)

measurement

Typical deviation - Level measurement Max. deviation - Version with reference

6)7)

See following diagrams

± 10 mm (0.39 in)

distance

Deviating upper dead band - Version with

450 mm (17.7 in)

reference distance

5 mm (0.197")

2 mm (0.079")

-2 mm (-0.079")

-10 mm (0.394")

0,03 m (1.181

0,15 m (5.906")

Fig. 41: Deviation VEGAFLEX 81 in coax version in water

1 Dead band - no measurement possible in this area L Probe length

0,05 m

(1.969

With interface measurement = 2.0

Depending on the installation conditions, there can be deviations which can be rectied with an adaptation of

the adjustment or a change of the measured value oset in the DTM service mode

The dead bands can be optimizes by a false signal suppression.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

10 mm (0.394")

5 mm (0.197")

2 mm (0.079")

-2 mm (-0.079

-5 mm (-0.197")

1 1

11 Supplement

0,1 m (3.937

Fig. 42: Deviation VEGAFLEX 81 in coax version in oil

1 Dead band - no measurement possible in this area L Probe length

0,15 m (5.906")

0,1 m

(3.937

0,05 m (1.97

Repeatability ≤ ±1 mm

Variablesinuencingmeasurementaccuracy

Specicationsforthedigitalmeasuredvalue

Temperature drift - Digital output ±3 mm/10 K relating to the max. measuring range or

max. 10 mm (0.394 in)

Additional deviation through electromag-

< ±10 mm (< ±0.394 in)

netic interference acc. to EN 61326

Specicationsapplyalsotothecurrentoutput

Temperature drift - Current output ±0.03 %/10 K relating to the 16 mA span max. ±0.3 % Deviation on the current output through

< ±15 µA

analogue/digital conversion Additional deviation through electromag-

< ±150 µA

netic interference acc. to EN 61326

Inuenceofthesuperimposedgasandpressuretotheaccuracy

The propagation speed of the radar impulses in gas or vapour above the medium is reduced by high pressure. This eect depends on the superimposed gas or vapour and is especially large at

low temperatures.

The following table shows the resulting deviation for some typical gases and vapours. The specied values refer to the distance. Positive values mean that the measured distance is too large, negative values that the measured distance is too small.

Gas phase Temperature Pressure

1 bar (14.5 psig) 10 bar (145 psig) 50 bar (725 psig)

Air 20 °C/68 °F 0.00 % 0.22 % 1.2 %

200 °C/392 °F -0.01 % 0.13 % 0.74 %

400 °C/752 °F -0.02 % 0.08 % 0.52 %

Also for the second current output (optional)

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

Gas phase Temperature Pressure

1 bar (14.5 psig) 10 bar (145 psig) 50 bar (725 psig)

Hydrogen 20 °C/68 °F -0.01 % 0.10 % 0.61 %

200 °C/392 °F -0.02 % 0.05 % 0.37 %

400 °C/752 °F -0.02 % 0.03 % 0.25 %

Steam (saturated steam)

100 °C/212 °F 0.26 % - -

180 °C/356 °F 0.17 % 2.1 % -

264 °C/507 °F 0.12 % 1.44 % 9.2 %

366 °C/691 °F 0.07 % 1.01 % 5.7 %

Characteristics and performance data

Measuring cycle time

Step response time

< 500 ms ≤ 3 s

Max. lling/emptying speed 1 m/min

Ambient conditions

Ambient, storage and transport tempera-

-40 … +80 °C (-40 … +176 °F)

ture

Process conditions

For the process conditions, please also note the specications on the type label. The lowest value

always applies.

The measurement error from the process conditions is in the specied pressure and temperature range of below 1 %.

Process pressure

Ʋ Standard version -1 … +40 bar/-100 … +4000 kPa (-14.5 … +580 psig),

depending on the process tting

Ʋ with borosilicate glass leadthrough -1 … +100 bar/-100 … +10000 kPa

(-14.5 … +1450 psig), depending on the process tting

Vessel pressure relating to the ange

nominal stage

see supplementary instructions manual "Flanges according to DIN-EN-ASME-JIS"

Process temperature (thread or ange temperature)

Ʋ FKM (SHS FPM 70C3 GLT) -40 … +150 °C (-40 … +302 °F) Ʋ EPDM (A+P 75.5/KW75F) -40 … +150 °C (-40 … +302 °F) Ʋ FFKM (Kalrez 6375) -20 … +150 °C (-4 … +302 °F) Ʋ FFKM (Kalrez 6375) -20 … +200 °C (-4 … +392 °F) Ʋ with borosilicate glass leadthrough -60 … +150 °C (-76 … +302 °F)

Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk

solids applications, until the output signal has taken for the rst time 90 % of the nal value (IEC 61298-2).

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

80°C

(176°F)

65°C

(149°F)

11 Supplement

3 4

-40°C

(-104°F)

0°C

(32°F)

-40°C

(-104°F)

80°C

(176°F)

130°C

(266°F)

150°C

(302°F)

Fig. 43: Ambient temperature - process temperature, standard version

1 Ambient temperature 2 Process temperature (depending on the seal material) 3 Maximum permissible temperature - standard 4 Limited temperature range - plastic housing and stainless steel housing, electropolished

80°C

(176°F)

55°C

(131°F)

0°C

-20°C

(-68°F)

(32°F)

-40°C

(-104°F)

150°C

(302°F)

Fig. 44: Ambient temperature - process temperature, version with temperature adapter

200°C

(392°F)

3 4

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

80°C

(176°F)

65°C

(149°F)

3 4

0°C

-60°C

(-140°F)

Fig. 45: Ambient temperature - process temperature, elastomer-free version for ammonia applications

(32°F)

-40°C

(-104°F)

130°C

(266°F)

150°C

(302°F)

Viscosity - dynamic 0.1 … 500 mPa s (requirement: with density 1)

Vibration resistance

Ʋ Instrument housing 4 g at 5 … 200 Hz according to EN 60068-2-6 (vibration

with resonance)

Ʋ Coax probe 1 g with 5 … 200 Hz according EN 60068-2-6 (vibration

at resonance) with tube length 50 cm (19.69 in)

Shock resistance

Ʋ Instrument housing 100 g, 6 ms according to EN 60068-2-27 (mechanical

shock)

Ʋ Coax probe 25 g, 6 ms according to EN 60068-2-27 (mechanical

shock) with tube length 50 cm (19.69 in)

Electromechanical data - version IP 66/IP 67 and IP 66/IP 68; 0.2 bar

Options of the cable entry

Ʋ Cable gland M20 x 1.5 Ʋ Cable diameter (options) 5 … 9 mm (0.20 … 0.35 in)

6 … 12 mm (0.24 … 0.47 in)

10 … 14 mm (0.39 … 0.55 in)

Ʋ Cable entry ½ NPT Ʋ Blind plug M20 x 1.5; ½ NPT Ʋ Closing cap M20 x 1.5; ½ NPT

Plug options

Ʋ Signal circuit Plug M12 x 1, according to ISO 4400, Harting HAN,

7/8" FF

Ʋ Indication circuit M12 x 1 plug

Wire cross-section (spring-loaded terminals)

Ʋ Massive wire, cord 0.2 … 2.5 mm² (AWG 24 … 14)

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Ʋ Stranded wire with end sleeve 0.2 … 1.5 mm² (AWG 24 … 16)

Electromechanical data - version IP 66/IP 68 (1 bar)

Options of the cable entry

Ʋ Cable gland M20 x 1.5 Ʋ Cable diameter (options) 5 … 9 mm (0.20 … 0.35 in)

6 … 12 mm (0.24 … 0.47 in)

10 … 14 mm (0.39 … 0.55 in)

Ʋ Cable entry ½ NPT Ʋ Blind plug M20 x 1.5; ½ NPT

Connection cable

Ʋ Wire cross-section 0.5 mm² (AWG 20) Ʋ Wire resistance < 0.036 Ω/m Ʋ Tensile strength < 1200 N (270 lbf) Ʋ Standard length 5 m (16.4 ft) Ʋ Max. length 180 m (590.6 ft) Ʋ Min. bending radius 25 mm (0.984 in) with 25 °C (77 °F) Ʋ Diameter approx. 8 mm (0.315 in) Ʋ Colour - Non-Ex version Black Ʋ Colour - Ex-version Blue

Display and adjustment module

Display element Display with backlight

Measured value indication

Ʋ Number of digits 5 Ʋ Size of digits W x H = 7 x 13 mm

Adjustment elements 4 keys

Protection rating

Ʋ unassembled IP 20 Ʋ mounted into the housing without

IP 40

cover

Materials

Ʋ Housing ABS Ʋ Inspection window Polyester foil

11 Supplement

Integrated clock

Date format Day.Month.Year Time format

12 h/24 h

Time zone Ex factory CET

Measurement electronics temerature

Resolution

1 °C (1.8 °F)

Accuracy ±1 °C (1.8 °F)

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

Voltage supply

Operating voltage

Ʋ Non-Ex instrument, Ex-d instrument 9.6 … 35 V DC Ʋ Ex-ia instrument 9.6 … 30 V DC Ʋ Ex-d-ia instrument 15 … 35 V DC

Operating voltage with illuminated display and adjustment module

Ʋ Non-Ex instrument, Ex-d instrument 16 … 35 V DC Ʋ Ex-ia instrument 16 … 30 V DC Ʋ Ex-d-ia instrument 20 … 35 V DC

Interpolation protection Integrated

Permissible residual ripple - Non-Ex, Ex-ia instrument

Ʋ for 9.6 V< UN < 14 V ≤ 0.7 Ve (16 … 400 Hz) Ʋ for 18 V< UN < 36 V ≤ 1 Ve (16 … 400 Hz)

Permissible residual ripple - Ex-d-ia instrument

Ʋ for 18 V< UN < 35 V ≤ 1 Ve (16 … 400 Hz)

Load resistor

Ʋ Calculation (UB - U Ʋ Example - Non-Ex instrument with

(24 V - 9.6 V)/0.0215 A = 670 Ω

)/0.0215 A

min

UB= 24 V DC

Electrical protective measures

Protection, depending on housing version

Ʋ Plastic housing IP 66/IP 67 Ʋ Aluminium housing, stainless steel

IP 66/IP 68 (0.2 bar)

10)

housing - investment casting, stainless steel housing - electro-polished

Ʋ Aluminium and stainless housing, in-

IP 66/IP 68 (1 bar)

vestment casting (optionally available)

Overvoltage category III

Protection class III

Approvals

Instruments with approvals can have dierent technical data depending on the version. For that reason the associated approval documents of these instruments must be carefully noted.

They are part of the delivery or can be downloaded under www.vega.com and "VEGA Tools" as well as under "Downloads" and "Approvals".

11.2 Dimensions

The following dimensional drawings represent only an extract of all possible versions. Detailed

dimensional drawings can be downloaded at www.vega.com/downloads under "Drawings".

10)

The prerequisites for maintaining the protection rating are a suitable cable as well as correct mounting.

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

Plastic housing

~ 69 mm

(2.72")

ø 79 mm

(3.11")

~ 84 mm

(3.31")

M16x1,5

11 Supplement

ø 79 mm

(3.11")

(4.41")

112 mm

(4.41")

112 mm

M20x1,5/ ½ NPT

M20x1,5/

Fig. 46: Housing versions in protection IP 66/IP 68 (0.2 bar) - with integrated display and adjustment module the housing is 9 mm/0.35 in higher

1 Single chamber version 2 Double chamber version

½ NPT

Aluminium housing

M20x1,5/ ½ NPT

~ 116 mm

(4.57")

ø 86 mm

(3.39")

M20x1,5

(4.57")

116 mm

~ 87 mm

M16x1,5

M20x1,5/ ½ NPT

(3.43")

ø 86 mm

(3.39")

(4.72")

120 mm

Fig. 47: Housing versions in protection IP 66/IP 68 (0.2 bar) - with integrated display and adjustment module the housing is 9 mm/0.35 in higher

1 Single chamber version 2 Double chamber version

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

Aluminium housing in protection rating IP 66/IP 68 (1 bar)

~ 150 mm

(5.91")

ø 84 mm

(3.31")

(4.57")

116 mm

M20x1,5

Fig.48:HousingversionsinprotectionIP␣66/IP␣68(1␣bar)-withintegrateddisplayandadjustmentmodulethe housingis9␣mm/0.35␣inhigher

1 Single chamber version 2 Double chamber version

~ 105 mm

(4.13")

M20x1,5/ ½ NPT

ø 84 mm

(3.31")

M16x1,5

(4.72")

120 mm

Stainless steel housing

~ 59 mm

(2.32")

ø 80 mm

(3.15")

~ 69 mm

(2.72")

ø 79 mm

(3.11")

~ 87 mm

(3.43")

M16x1,5

ø 86 mm

(3.39")

(4.41")

112 mm

(4.61")

117 mm

120 mm

M20x1,5/

½ NPT M20x1,5/ ½ NPT

Fig. 49: Housing versions in protection IP 66/IP 68 (0.2 bar) - with integrated display and adjustment module the housing is 9 mm/0.35 in higher

1 Single chamber version, electropolished 2 Single chamber version, precision casting 3 Double chamber version, precision casting

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

M20x1,5/ ½ NPT

321

(4.72")

42279-EN-130612

Stainless steel housing in protection rating IP 66/IP 68, 1 bar

~ 93 mm

(3.66")

ø 80 mm

(3.15")

~ 105 mm (4.13")

ø 86 mm

(3.39")

M16x1,5

~ 103 mm

(4.06")

11 Supplement

ø 79 mm

(3.11")

M20x1,5/ ½ NPT

(4.41")

112 mm

M20x1,5/ ½ NPT

(4.72")

120 mm

117 mm

M20x1,5

Fig.50:HousingversionsinprotectionIP␣66/IP␣68(1␣bar)-withintegrateddisplayandadjustmentmodulethe housingis9␣mm/0.35␣inhigher

1 Single chamber version, electropolished 2 Single chamber version, precision casting 3 Double chamber version, precision casting

(4.61")

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

VEGAFLEX 81, coax version

SW 36 (1.

42")

(G¾, ¾ NPT) (G1, 1 NPT)

61")

SW 41 (1.

81")

SW 46 (1.

(G1½, 1½ NPT)

G¾, ¾ NPT, G1, 1 NPT, G1½, 1½ NPT

ø 21,3 mm

1 2

Fig. 51: VEGAFLEX 81, threaded version

L Sensor length, see chapter "Technical data" 1 Coaxial version ø 21.3 mm (0.839 in) 2 Coaxial version ø 42.2 mm (1.661 in)

(0.84")

46 mm

(1.81")

SW 55

(2.17")

G1½, 1½ NPT

22mm

ø 42,2 mm

(1.66")

(0.86")

51 mm

(2.01")

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

11 Supplement

11.3 Industrial property rights

VEGA product lines are global protected by industrial property rights. Further information see www.vega.com.

Only in U.S.A.: Further information see patent label at the sensor housing.

VEGA Produktfamilien sind weltweit geschützt durch gewerbliche Schutzrechte.

Nähere Informationen unter www.vega.com.

Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellectuelle. Pour plus d'informations, on pourra se référer au site www.vega.com.

VEGA lineas de productos están protegidas por los derechos en el campo de la propiedad industrial. Para mayor información revise la pagina web www.vega.com.

Линии продукции фирмы ВЕГА защищаются по всему миру правами на интеллектуальную собственность. Дальнейшую информацию смотрите на сайте www.vega.com.

VEGA系列产品在全球享有知识产权保护。进一步信息请参见网站<www.vega.com>。

11.4 Trademark

All the brands as well as trade and company names used are property of their lawful proprietor/

originator.

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

INDEX

Accessories

– Display and adjustment module 13 – External display and adjustment unit 14 – External radio unit 14 – Flanges 14 – Interface adapter 13 – Protective cap 14

Adjustment

– Max. adjustment 35, 36 – Min. adjustment 36, 37

Adjustment system 30 Application 34, 35 Application area 10

Backlight 44 Block adjustment 42

Cable entry 19 Check signal 66 Connection cable 19 Connection procedure 20 Connection technology 20 Copy sensor settings 50 Current output 2 41

Current output, adjustment 40 Current output Min./Max. 41

Current output mode 40

Current output, size 40 Curve indication

– Echo curve 45

Damping 37

Date of manufacture 51

Date/Time 47

Default values 47 Deviation 67

Echo curve memory 61 Echo curve of the setup 46 EDD (Enhanced Device Description) 60 Electronics and connection compartment,

single chamber housing 22

Electronics compartment, double chamber

housing 22

Electronics compartment with Ex-d double

chamber housing 24 Error messages 62 Event memory 61

Factory calibration date 51 False signal suppression 42 Fault rectication 66 Functional principle 10

Gas phase 35 Grounding 20

HART address 51 HART resistor 53 HART variables 41

Inowing medium 16 Installation position 15

Key function 29

Language 43 Linearization 37

Main menu 33 Meas. reliability 44

Measured value indication 43 Measured value memory 61

Measurement loop name 33 Medium type 34 Moisture 15

NAMUR NE 107

– Failure 63 – Function check 64 – Maintenance 65 – Out of specication 64

Packaging 13 Peak value 44, 45 PIN 46 Potential equalisation 20

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Probe length 34 Probe type 50

Quick setup 31

Read out info 51

Repair 70 Replacement parts

– Display and adjustment module with

heating 14

– Electronics module 14

Reset 47

Scaling measured value 39, 40 Sensor characteristics 52 Sensor status 44 Service hotline 69 Shielding 20 Simulation 45 Special parameters 50 Status messages 62 Storage 13

Type plate 9

INDEX

Units 34

Voltage supply 19

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Notes

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Notes

42279-EN-130612

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

Printing date:

All statements concerning scope of delivery, application, practical use and operating conditions of the sensors and processing systems correspond to the information available at the time of printing. Subject to change without prior notice

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

42279-EN-130612

VEGA FLEX81 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Quick start

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 incorrect use

2.4 General safety instructions

2.5 CE conformity

2.6 NAMUR recommendations

2.7 Environmental instructions

3 Product description

3.2 Principle of operation

3.3 Packaging, transport and storage

3.4 Accessories and replacement parts

4 Mounting

4.1 General instructions

4.2 Mounting instructions

5 Connecting to power supply

5.1 Preparing the connection

5.2 Connecting

5.3 Wiring plan, single chamber housing

5.4 Wiring plan, double chamber housing

5.5 Wiring plan, Ex-d-ia double chamber housing

5.6 Wiring plan - version IP 66/IP 68, 1 bar

5.7 Supplementary electronics

5.8 Switch-on phase

6 Set up with the display and adjustment module

6.1 Insert display and adjustment module

6.2 Adjustment system

6.3 Parameter adjustment - Quick setup

6.4 Parameter adjustment - Extended adjustment

6.5 Saving the parameter adjustment data

7 Setup with PACTware

7.1 Connect the PC

7.2 Parameter adjustment with PACTware

7.3 Set up with the quick setup

7.4 Saving the parameter adjustment data

8 Set up with other systems

8.1 DD adjustment programs

8.2 Field Communicator 375, 475

9 Diagnostics and service

9.1 Maintenance

9.2 Diagnosis memory

9.3 Status messages

9.4 Rectify faults

9.5 Exchanging the electronics module

9.6 Software update

9.7 How to proceed in case of repair

10 Dismounting

10.1 Dismounting steps

10.2 Disposal

11 Supplement

11.1 Technical data

11.2 Dimensions

11.3 Industrial property rights

11.4 Trademark