Vega VEGABAR 81 Operating Instructions Manual
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Vega VEGABAR 81 Operating Instructions Manual

Pressure transmitter with metallic measuring cell
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Operating Instructions
Pressure transmitter with metallic
measuring cell
VEGABAR 81
Secondary Device for electronic differential
pressure
With SIL qualification
Document ID: 48045

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Summary of Contents for Vega VEGABAR 81

  • Page 1 Operating Instructions Pressure transmitter with metallic measuring cell VEGABAR 81 Secondary Device for electronic differential pressure With SIL qualification Document ID: 48045...

  • Page 2: Table Of Contents

    Safety concept of the parameterization ................31 Set up with the display and adjustment module ..............33 Parameter adjustment ....................33 Menu overview ....................... 46 Diagnosis, asset management and service ................ 49 Maintenance ........................49 VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 3 Take note of the Ex specific safety instructions for Ex applications. These instructions are attached as documents to each instrument with Ex approval and are part of the operating instructions. Editing status: 2023-09-01 VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 4: About This Document

    Symbols used Document ID This symbol on the front page of this instruction refers to the Docu- ment ID. By entering the Document ID on www.vega.com you will reach the document download. Information, note, tip: This symbol indicates helpful additional infor- mation and tips for successful work.

  • Page 5: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use As Secondary Device, the VEGABAR 81 is part of an electronic dif- ferential pressure meaasurement. You can find detailed information about the area of application in chapter "...

  • Page 6: Sil Qualification According To Iec 61508

    • Chapter " Packaging, transport and storage" • Chapter " Disposal" Exception: Versions with measuring ranges from 250 bar. These are subject of the EU Pressure Device Directive. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 7: Product Description

    Open the VEGA Tools app and enter the serial number under " Documentation". Principle of operation Application area VEGABAR 81 is suitable for applications in virtually all industries. It is used for the measurement of the following pressure types. • Gauge pressure •...
  • Page 8 3 Product description Measured products Measured products are gases, vapours and liquids. The chemical seal systems of VEGABAR 81, which are optimally adapted to the process, also allow measurement of highly corrosive and hot products. Measured variables The electronic differential pressure measurement is suitable for the measurement of the following process variables: •...
  • Page 9 Relative pressure: the measuring cell is open to the atmosphere. The ambient pressure is detected in the measuring cell and compen- sated. It thus has no influence on the measured value. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 10: Supplementary Cleaning Procedures

    " Technical data", " Materials and weights". Supplementary cleaning procedures The VEGABAR 81 is also available in the version " Oil, grease and silicone-free". These instruments have passed through a special cleaning procedure to remove oil, grease and paint-wetting impair- ment substances (PWIS).

  • Page 11: Accessories

    Welded sockets are used to connect the devices to the process. and hygienic adapter Threaded and hygienic adapters enable simple adaptation of devices with standard threaded fittings to process-side hygiene connections. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 12: Mounting

    Avoid damages on the device by lateral forces, for example by vibra- Vibrations tions. It is thus recommended to fix the devices with process fitting VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 13 Make sure that the upper temperature limits stated in chapter " Technical data" for the environment of the electronics hous- ing and connection cable are not exceeded. Fig. 4: Temperature ranges Process temperature Ambient temperature VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 14: Instructions For Oxygen Applications

    Do not use a high-pressure cleaner. The filter element could be dam- aged, which would allow moisture into the housing. The following paragraphs describe how the filter element is arranged in the different instrument versions. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 15 The process assembly of instruments with Second Line of Defense Instruments with Second Line of Defense (gastight leadthrough) is completely encapsulated. An absolute pres- sure measuring cell is used so that no ventilation is required. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 16: Combination Primary - Secondary

    Measurement result = Measured value of Primary (total pres- sure) - measured value of Secondary (static pressure) Depending on the application, individual combinations can result, see following examples: Example - large vessel Data Application: Level measurement Medium: Water VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 17: Level Measurement

    Mount the Primary Device below the min. level • Mount primary device away from emptying • Mount the Primary Device so that it is protected against pressure shocks from the stirrer VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 18: Differential Pressure Measurement

    Take note of the following instructions for the measurement setup, for example in gases: • Mount the instruments above the measuring point Possible condensation can then drain off into the process line. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 19: Interface Measurement

    The mounting distance " h" of the two sensors should be at least 10 %, better 20 %, of the final value of the sensor measuring range. A bigger distance increases the accuracy of the interface measurement. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 20: Density Measurement

    Measurement setup Requirements for a functioning measurement are: • Vessel with changing level • Distance between the measurement points as large as possible • Level always above the upper measuring point VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 21: Density-Compensated Level Measurement

    Mount the Primary Device below the min. level • Mount the Secondary Device above the Primary Devices • Mount both sensors away from the filling stream and emptying and protected against pressure shocks from the stirrer VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 22 Density compensation means that the level value in height units and the adjustment values do not change in case of a fluctuating density. Note: The density-compensated level measurement is only possible in open, i.e. unpressurized vessels. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 23: External Housing

    4 Mounting 4.10 External housing Configuration Fig. 14: Configuration, process module, external housing Pipeline Process module Connection cable process assembly - External housing External housing Signal cable VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 24: Connecting To Power Supply

    On plastic housings, the NPT cable gland or the Conduit steel tube must be screwed into the threaded insert without grease. Max. torque for all housings, see chapter " Technical data". VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 25: Connecting

    6. Check the hold of the wires in the terminals by lightly pulling on them 7. Connect the shielding to the internal ground terminal, connect the external ground terminal to potential equalisation VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 26: Single Chamber Housing

    Ground terminal for connection of the cable screening Connect shielding here. Connect ground terminal on the outside of the hous- ing to ground as prescribed. The two terminals are galvanically connected. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 27: External Housing With Version Ip68 (25 Bar)

    5 Connecting to power supply External housing with version IP68 (25 bar) Overview Fig. 17: VEGABAR 81 in IP68 version 25 bar with axial cable outlet, external housing Transmitter Connection cable External housing Electronics and connec- tion compartment for power supply 4...20mA...
  • Page 28 Ground terminal for connection of the cable screening Connect shielding here. Connect ground terminal on the outside of the hous- ing to ground as prescribed. The two terminals are galvanically connected. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 29: Connection Example

    The connection between Primary and Secondary Device is carried out acc. to the table: Primary Device Secondary Device Terminal 5 Terminal 5 Terminal 6 Terminal 6 Terminal 7 Terminal 7 Terminal 8 Terminal 8 VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 30: Functional Safety (Sil)

    SIL rating and can be also found on our homepage via the search. Application area The instrument can be used, for example, for process pressure and hydrostatic level measurement of liquids in safety-instrumented sys- VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 31: Safety Concept Of The Parameterization

    The DTM suitable for the device in conjunction with an adjustment software according to the FDT/DTM standard, e. g. PACTware Note: For operation of the VEGABAR 81 an actual DTM Collection is re- quired. The modification of safety-relevant parameters is only possible with active connection to the instrument (online mode).
  • Page 32 Warning: Instrument reset In case of a reset to basic settings, all safety-relevant parameters will also be reset to default. Therefore all safety-relevant parameters must be checked or readjusted. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 33: Set Up With The Display And Adjustment Module

    Unlock adjustment • Change parameters • Lock adjustment and verify modified parameters This ensures that all modified parameters have been deliberately changed. Unlock adjustment The instrument is shipped in locked condition. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 34 In this menu item you activate/deactivate the Secondary Device for electronic differential pressure and select the application. The VEGABAR 81 in conjunction with a Secondary Device can be used for flow, differential pressure, density and interface measure- ment. The default setting is differential pressure measurement.
  • Page 35 After the position correction is carried out, the actual measured value is corrected to 0. The corrective value appears with an inverse sign as offset value in the display. The position correction can be repeated any number of times. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 36 7 Set up with the display and adjustment module Adjustment VEGABAR 81 always measures pressure independently of the pro- cess variable selected in the menu item " Application". To output the selected process variable correctly, an allocation of the output signal to 0 % and 100 % must be carried out (adjustment).
  • Page 37 Now select with [->] the menu item " Min. adjustment" and con- firm with [OK]. 2. Edit the mbar value with [OK] and set the cursor to the requested position with [->]. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 38 For an adjustment with pressure, simply enter the actual measured value indicated at the bottom of the display. Span adjustment differ- Proceed as follows: ential pressure VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 39 Proceed as follows: 1. Select the menu item " Setup" with [->] and confirm with [OK]. Now select with [->] the menu item " Max. adjustment" and con- firm with [OK]. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 40 Proceed as follows: 1. Select the menu item " Setup" with [->] and confirm with [OK]. Now select with [->] the menu item " Max. adjustment" and con- firm with [OK]. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 41 For an adjustment with filling, simply enter the actual measured value indicated at the bottom of the display. Max. adjustment level Proceed as follows: density-compensated 1. Select with [->] the menu item Max. adjustment and confirm with [OK]. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 42 The device assumes an approximately constant temperature and static pressure and calculates the flow rate from the measured differential pressure using the characteristic curve extracted by root. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 43 German and in the case of all other menu languages, in English. 3. Serial number acknowledgement Afterwards you confirm that the serial number of your instrument was carried over correctly. This is used to check device communication. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 44 Otherwise the instrument remains in the released and hence unsafe condition. Information: As long as the VEGABAR 81 is powered, the display and adjustment module remains in the actually set adjustment menu. An automatic, time-controlled reset to the measured value indication is not carried out.
  • Page 45 The following selection is possible depending on the selected ap- plication: • Flow • Height - Interface • Density • Differential pressure • Static pressure VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 46: Menu Overview

    Pa, psi … user-defined) range ≤ 400 mbar) bar (with nominal measuring ranges ≥ 1 bar) Static pressure Position correc- 0.00 bar tion (SIL) Parameter active, when Secondary Device is connected VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 47 Peak indicator Pressure Current pressure measured value Peak indicator Temperature Actual measuring cell and elec- temp. tronic temperature Simulation Additional adjustments Menu item Parameter Default setting 0000 Date/Time Actual date/Actual time VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 48 0.00 % correspond to 0.00 m 100.00 %, 1 m Info Menu item Parameter Device name VEGABAR 81 Instrument version Hardware and software version Factory calibration date Date Sensor characteristics Order-specific characteristics VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 49: Diagnosis, Asset Management And Service

    24 hour service hotline 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.

  • Page 50: Exchanging The Electronics Module

    Proceed as follows when carrying out the exchange: 1. Losen the fixing screw with the hexagon key wrench 2. Carefully detach the cable assembly from the process module VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 51: How To Proceed If A Repair Is Necessary

    8 Diagnosis, asset management and service Fig. 23: VEGABAR 81 in IP68 version, 25 bar and lateral cable outlet, external housing Process module Plug connector Fixing screw Cable assembly Connection cable External housing 3. Loosen the plug connector 4. Mount the new process module on the measuring point 5.

  • Page 52: Dismount

    If personal data is stored on the old device to be disposed of, delete it before disposal. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 53: Supplement

    Ʋ Seal between base and wall mounting EPDM (fixed connected) plate Inspection window housing cover Polycarbonate (UL-746-C listed), glass Seal, housing lid Silicone SI 850 R, NBR silicone-free Glass with Aluminium and stainless steel (precision casting) housing VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 54 -1 … +5 bar/-100 … +500 kPa +15 bar/+1500 kPa -1 bar/-100 kPa -1 … +10 bar/-100 … +1000 kPa +30 bar/+3000 kPa -1 bar/-100 kPa Data on overload capability apply for reference temperature. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 55 Max. permissible Turn Down Unlimited (recommended 20 : 1) Max. permissible turn down with SIL 10 : 1 applications Dynamic behaviour output Dynamic characteristics depending on medium and temperature VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 56 Determination of characteristics Limit point adjustment according to IEC 61298-2 Characteristic curve Linear Reference installation position upright, diaphragm points downward Influence of the installation position depending on the chemical seal version VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 57 -10 … +320 °C (+14 … +752 °F) up to 10 h: with capillaries -10 … +400 °C (+14 … +608 °F) Depending on which chemical seal is used, the values can also be higher. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 58 100 °C 150 °C (-104 °F) (122 °F) (212 °F) (302 °F) Fig. 25: Temperature derating VEGABAR 81, process fittings Alloy 400 (2.4360) Process temperature Process pressure Mechanical stress Vibration resistance Ʋ Standard versions 1 to 4 g at 5 … 200 Hz according to EN 60068-2-6 (vibration with resonance) Ʋ...
  • Page 59 Connection cable transmitter - external housing, electrical data Ʋ Wire cross-section 0.5 mm² (AWG 20) Ʋ Wire resistance 0.037 Ω/m (0.012 Ω/ft) IP66/IP68 (0.2 bar), only with absolute pressure. Breather capillaries not with Ex d version. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 60 IP66/IP68 (0.2 bar) Type 6P IP66/IP68 (1 bar) Protection rating IP66/IP68 (0.2 bar) only in conjunction with absolute pressure, as no air compensation is pos- sible when the sensor is completely flooded VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 61: Dimensions

    10.2 Dimensions The following dimensional drawings represent only an extract of the possible versions. Detailed dimensional drawings can be downloaded at www.vega.com under " Downloads" and " Drawings". When used with fulfilled housing protection. VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 62 9 mm/0.35 in or 18 mm/0.71 in higher) Plastic single chamber (IP66/IP67) Aluminium - single chamber Stainless steel single chamber (electropolished) Stainless steel single chamber (precision casting) Stainless steel single chamber (electropolished) IP69K VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 63 8 mm (0.12") (0.32") 110 mm x 90 mm (4.33" x 3.54") Fig. 27: VEGABAR 81, IP68 version with external housing Lateral cable outlet Axial cable outlet Plastic single chamber Stainless steel single chamber Seal 2 mm (0.079 in), (only with 3A approval)
  • Page 64 GE G½ A outside PN 160 (ISO 228-1); diaphragm: inside; > 105 °C with temperature adapter GK G¾ A outside PN 600 (DIN 3852-E); diaphragm: front-flush GL G1 A outside PN 600 (ISO 228-1); diaphragm: front-flush GN G1½ PN 600 (DIN 3852-A); diaphragm: front-flush VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 65 " 4.09" 0.79" Fig. 29: VEGABAR 81, tube isolating diaphragm Tube isolating diaphragm for mounting between flanges Tube isolating diaphragm according to DIN 11851 Tube isolating diaphragm according to DIN 11864-1 VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 66 48,3 4 x ø19 24,3 152,4 3" Fig. 30: VEGABAR 81, flange connection, dimensions in mm Flange connection according to DIN 2501 Flange connection according to ASME B16.5 Order-specific Diaphragm diameter VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 67 4 x ø0.75" 3" 7.48" 0.96" 6" 5" 0.08" Fig. 31: VEGABAR 81, flange connection, dimensions in inch Flange connection according to DIN 2501 Flange connection according to ASME B16.5 Order-specific Diaphragm diameter VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 68 6.3" 0.71" 3.5" 16..100 0.79" 5.43" 3.5" Fig. 32: VEGABAR 81, flange and cell isolating diaphragm with capillary line Flange isolating diaphragm with capillary line Cell isolating diaphragm with capillary line VEGABAR 81 • Secondary Device for electronic differential pressure...

  • Page 69: Industrial Property Rights

    Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellec- tuelle. 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 indus- trial. Para mayor información revise la pagina web www.vega.com.
  • Page 70 – Interface measurement 19 – Level measurement 17, 21 Measuring system 9 Oxygen applications 14 Parameterization example 36 Peak indicator 45 PIN 31 Position correction 35 Pressure compensation 16 – Ex d 15 VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 71 Notes VEGABAR 81 • Secondary Device for electronic differential pressure...
  • Page 72 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2023 VEGA Grieshaber KG Am Hohenstein 113 Phone +49 7836 50-0 77761 Schiltach E-mail: info.de@vega.com...

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