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Vega VEGABAR 81 Operating Instructions Manual

Pressure transmitter with chemical seal 4...20 ma
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Operating Instructions

Pressure transmitter with chemical seal
VEGABAR 81
4 ... 20 mA
Document ID: 45025

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Summary of Contents for Vega VEGABAR 81

  • Page 1: Operating Instructions

    Operating Instructions Pressure transmitter with chemical seal VEGABAR 81 4 … 20 mA Document ID: 45025...

  • Page 2: Table Of Contents

    Parameter adjustment - Extended adjustment..............30 Saving the parameter adjustment data ................43 Setup with PACTware Connect the PC ......................44 Parameter adjustment ....................44 Saving the parameter adjustment data ................45 Set up with other systems VEGABAR 81 • 4 … 20 mA...
  • Page 3 11.3 Dimensions ........................66 Safety instructions for Ex areas 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 manual. Editing status: 2016-01-20 VEGABAR 81 • 4 … 20 mA...

  • Page 4: About This Document

    This arrow indicates a single action. Sequence of actions Numbers set in front indicate successive steps in a procedure. Battery disposal This symbol indicates special information about the disposal of bat- teries and accumulators. VEGABAR 81 • 4 … 20 mA...

  • Page 5: For Your Safety

    During work on and with the device the required personal protective equipment must always be worn. Appropriate use The VEGABAR 81 is a pressure transmitter for process pressure and hydrostatic level measurement. You can find detailed information about the area of application in chapter "Product description". Operational reliability is ensured only if the instrument is properly used according to the specifications in the operating instructions manual as well as possible supplementary instructions.

  • Page 6: Permissible Process Pressure

    That is why we have introduced an environment management system with the goal of continuously improving company environmental pro- tection. The environment management system is certified according to DIN EN ISO 14001. Please help us fulfill this obligation by observing the environmental instructions in this manual: • Chapter "Packaging, transport and storage" • Chapter "Disposal" VEGABAR 81 • 4 … 20 mA...

  • Page 7: Product Description

    Alternatively, you can access 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 •...

  • Page 8: Principle Of Operation

    Optional instrument features are also described in this operating instructions manual. The respective scope of delivery results from the order specification. Principle of operation Measured variables The VEGABAR 81 is suitable for the measurement of the following process variables: • Process pressure •...
  • Page 9 Chemical seal The VEGABAR 81 is equipped with a chemical seal. It consists of a stainless steel diaphragm and a transmission liquid. A chemical seal has two tasks: •...

  • Page 10: Supplementary Cleaning Procedures

    Caution: The VEGABAR 81 in this version may not be used in oxygen ap- plications. For this purpose, instruments of VEGABAR series 80 are available in the special version "Oil and grease-free for oxygen applications".

  • Page 11: Packaging, Transport And Storage

    You can find further information in the operating instructions "Interface adapter VEGACONNECT" (Document-ID 32628). VEGADIS 82 VEGADIS 82 is suitable for measured value indication and adjustment of sensors with HART protocol. It is looped into the 4 … 20 mA/HART signal cable. VEGABAR 81 • 4 … 20 mA...
  • Page 12 "Welded socket VEGABAR series 80" (Document-ID 48094). Electronics module The electronics module VEGABAR series 80 is a replacement part for pressure transmitters of VEGABAR series 80. There is a different version available for each type of signal output. You can find further information in the operating instructions "Elec- tronics module VEGABAR series 80" (Document-ID 45054). VEGABAR 81 • 4 … 20 mA...

  • Page 13: Mounting

    The dust protection caps do not provide sufficient protection against moisture. Prior to setup you have to replace these protective caps with ap- proved cable glands or close the openings with suitable blind plugs. Screwing in On instruments with threaded process fitting, the hexagon must be tightened with a suitable wrench. For the proper wrench size see chapter "Dimensions". VEGABAR 81 • 4 … 20 mA...

  • Page 14: Ventilation And Pressure Compensation

    The following paragraphs describe how the filter element is arranged in the different instrument versions. Instruments in non-Ex The filter element is mounted into the electronics housing. It has the and Ex-ia version following functions: • Ventilation of the electronics housing • Atmospheric pressure compensation (with relative pressure meas- uring ranges) VEGABAR 81 • 4 … 20 mA...
  • Page 15 Fig. 7: Position of the filter element - Ex-d version Single chamber housing, aluminium, stainless steel precision casting Double chamber housing, aluminium, stainless steel precision casting Rotatable metal ring Filter element VEGABAR 81 • 4 … 20 mA...

  • Page 16: Process Pressure Measurement

    Possible condensation can then drain off into the process line. Fig. 9: Measurement setup for process pressure measurement of gases in pipelines VEGABAR 81 Blocking valve Pipeline Measurement setup in Keep the following in mind when setting up the measuring system: vapours VEGABAR 81 • 4 … 20 mA...
  • Page 17 < 100 °C on the transmitter is ensured. Measurement setup in Keep the following in mind when setting up the measuring system: liquids • Mount the instrument below the measuring point The effective pressure line is always filled with liquid and gas bubbles can bubble up to the process line. VEGABAR 81 • 4 … 20 mA...

  • Page 18: Level Measurement

    • Mount the instrument below the min. level • Do not mount the instrument close to the filling stream or emptying area • Mount the instrument so that it is protected against pressure shocks from the stirrer Fig. 12: Measurement setup for level measurement VEGABAR 81 • 4 … 20 mA...

  • Page 19: External Housing

    1. Mark the holes according to the following drilling template 2. Fasten wall mounting plate with 4 screws 90 mm (3.54") 70 mm (2.76") 8 mm (0.12") (0.32") Fig. 14: Drilling template - wall mounting plate VEGABAR 81 • 4 … 20 mA...

  • Page 20: Connecting To Power Supply

    Prior to setup you have to replace these protective caps with ap- proved cable glands or close the openings with suitable blind plugs. VEGABAR 81 • 4 … 20 mA...

  • Page 21: Connecting

    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 VEGABAR 81 • 4 … 20 mA...

  • Page 22: Single Chamber Housing

    10. Reinsert the display and adjustment module, if one was installed 11. Screw the housing lid back on The electrical connection is finished. Single chamber housing The following illustration applies to the non-Ex as well as to the Ex-ia version. VEGABAR 81 • 4 … 20 mA...

  • Page 23: Housing Ip 66/Ip 68 (1 Bar)

    Housing IP 66/IP 68 (1 bar) Wire assignment, con- nection cable Fig. 17: Wire assignment in permanently connected connection cable brown (+) and blue (-) to power supply or to the processing system Shielding VEGABAR 81 • 4 … 20 mA...

  • Page 24: External Housing With Version Ip 68 (25 Bar)

    5 Connecting to power supply External housing with version IP 68 (25 bar) Overview Fig. 18: VEGABAR 81 in IP 68 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 25 Electronics and terminal compartment 4...20mA Fig. 21: Electronics and terminal compartment, single chamber housing Voltage supply, signal output For display and adjustment module or interface adapter Ground terminal for connection of the cable screen VEGABAR 81 • 4 … 20 mA...

  • Page 26: Overvoltage Protection Module

    The output signal jumps to the set fault current Then the actual measured value is outputted to the signal cable. The value takes into account settings that have already been carried out, e.g. default setting. VEGABAR 81 • 4 … 20 mA...

  • Page 27: Set Up With The Display And Adjustment Module

    Fig. 23: Installing the display and adjustment module in the electronics compart- ment of the single chamber housing Note: If you intend to retrofit the instrument with a display and adjustment module for continuous measured value indication, a higher lid with an inspection glass is required. VEGABAR 81 • 4 … 20 mA...

  • Page 28: Adjustment System

    1 s, the cursor moves continuously. When the [OK] and [ESC] keys are pressed simultaneously for more than 5 s, the display returns to the main menu. The menu language is then switched over to "English". VEGABAR 81 • 4 … 20 mA...

  • Page 29: Measured Value Indication

    After the last step, "Quick setup terminated successfully" is displayed briefly. The return to the measured value indication is carried out through the [->] or [ESC] keys or automatically after 3 s You can find "Extended adjustment" in the next sub-chapter. VEGABAR 81 • 4 … 20 mA...

  • Page 30: Parameter Adjustment - Extended Adjustment

    The available digits comprise: • Letters from A … Z • Numbers from 0 … 9 • Special characters +, -, /, - VEGABAR 81 • 4 … 20 mA...
  • Page 31 Setup - Application In this menu item you activate/deactivate the slave sensor for elec- tronic differential pressure and select the application. VEGABAR 81 can be used for process pressure and level measure- ment. Default setting is process pressure measurement. The mode can be changed in this adjustment menu.
  • Page 32 Setup - 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 33 [OK]. Setup - Span adjustment Proceed as follows: 1. Select with [->] the menu item Span adjustment and confirm with [OK]. 2. Edit the mbar value with [OK] and set the cursor to the requested position with [->]. VEGABAR 81 • 4 … 20 mA...
  • Page 34 [OK]. The cursor jumps now to the pressure value. 4. Enter the pressure value for the full vessel (e.g. 900 mbar) cor- responding to the percentage value. 5. Save settings with [OK] The max. adjustment is finished. VEGABAR 81 • 4 … 20 mA...
  • Page 35 The default setting is output characteristics 4 … 20 mA, failure mode < 3.6 mA. In the menu item "Current output Min./Max.", you determine the reac- Setup - Current output 1 and 2 (min./max.) tion of the current output during operation. VEGABAR 81 • 4 … 20 mA...
  • Page 36 • Chinese • Polish • Czech • Turkish In the delivery status, the VEGABAR 81 is set to English or the or- dered national language. Display - Displayed value In this menu item, you define which measured value is displayed. 1 and 2 VEGABAR 81 • 4 … 20 mA...
  • Page 37 In menu item "Peak value, temperature", both values are displayed. In another window you can carry out a reset of the two peak values separately. VEGABAR 81 • 4 … 20 mA...
  • Page 38 Additional adjustments With a reset, certain parameter adjustments carried out by the user - Reset are reset. The following reset functions are available: Delivery status: Restores the parameter settings at the time of shipment from the factory, incl. the order-specific settings. Any user- VEGABAR 81 • 4 … 20 mA...
  • Page 39 Menu item Default value Menu language Order-specific Displayed value 1 Current output in % Displayed value 2 Ceramic measuring cell: Measuring cell tempera- ture in °C Metallic measuring cell: Electronics temperature in °C VEGABAR 81 • 4 … 20 mA...
  • Page 40 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 "Reset, Date/Time" • The user-programmable linearization curve VEGABAR 81 • 4 … 20 mA...
  • Page 41 In menu item "Current output, variable" you specify which measured rent output 1 and 2 (size) variable is outputted via the current output. The following selection is possible: • Filling height • Density • Differential pressure • Static pressure • Percent • Scaled VEGABAR 81 • 4 … 20 mA...
  • Page 42 PC. Info - Sensor character- In this menu item, the features of the sensor such as approval, pro- istics cess fitting, seal, measuring range, electronics, housing and others are displayed. VEGABAR 81 • 4 … 20 mA...

  • Page 43: Saving The Parameter Adjustment Data

    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". VEGABAR 81 • 4 … 20 mA...

  • Page 44: Setup With Pactware

    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 descrip- tions are available in the online help of PACTware and the DTMs. VEGABAR 81 • 4 … 20 mA...

  • Page 45: Saving The Parameter Adjustment Data

    The standard version is available as a download under www.vega.com/downloads and "Software". The full version is avail- able on CD from the agency serving you. Saving the parameter adjustment data We recommend documenting or saving the parameter adjustment data via PACTware.

  • Page 46: Set Up With Other Systems

    This software is updated via the Internet and new EDDs are automatically taken over into the device catalogue of this software after they are released by the manufacturer. They can then be transferred to a Field Communicator. VEGABAR 81 • 4 … 20 mA...

  • Page 47: Diagnostics And Servicing

    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 48: Exchanging The Electronics Module

    During exchange, protect the inner side of the parts against contami- nation and moisture. 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 assembly VEGABAR 81 • 4 … 20 mA...

  • Page 49: Software Update

    9 Diagnostics and servicing Fig. 28: VEGABAR 81 in IP 68 version, 25 bar and lateral cable outlet, external housing Process assembly Plug connector Fixing screw Cable assembly Connection cable External housing 3. Loosen the plug connector 4. Mount the new process assembly on the measuring point 5.

  • Page 50: How To Proceed If A Repair Is Necessary

    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 the agency serving you to get the address for the return shipment. You can find the agency on our home page www.vega.com. VEGABAR 81 • 4 … 20 mA...

  • Page 51: Dismount

    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. VEGABAR 81 • 4 … 20 mA...

  • Page 52: Supplement

    Connection cable with IP 68 (1 bar) version Weights Total weight VEGABAR 81 approx. 0.8 … 8 kg (1.764 … 17.64 lbs), depending on process fitting and housing Between transmitter and external electronics housing Fix connected to the sensor VEGABAR 81 • 4 … 20 mA...
  • Page 53 0 … 25 bar/0 … 2500 kPa 50 bar/5000 kPa 0 bar abs. 0 … 40 bar/0 … 4000 kPa 80 bar/8000 kPa 0 bar abs. Nominal measuring ranges and overload capacity in psi The specifications are only an overview and refer to the measuring cell. Limitations due to the material and version of the process fitting as well as the selected pressure type are possible. The specifications on the nameplate apply. VEGABAR 81 • 4 … 20 mA...
  • Page 54 -20 … +95 % Ʋ Span -120 … +120 % Ʋ Difference between zero and span max. 120 % of the nominal range Max. permissible Turn Down Unlimited (recommended 20 : 1) Switch-on phase Run-up time approx. ≤ 5 s VEGABAR 81 • 4 … 20 mA...
  • Page 55 Load resistor, see chapter "Voltage supply" Damping (63 % of the input variable), 0 … 999 s adjustable Dynamic behaviour output Dynamic characteristics depending on medium and temperature The indication values can be assigned individually VEGABAR 81 • 4 … 20 mA...
  • Page 56 Fig. 29: Sudden change of the process variable. t : dead time; t : rise time; t : jump response time Process variable Output signal VEGABAR 81 VEGABAR 81 - IP 68 (25 bar) Dead time ≤ 25 ms ≤ 50 ms Rise time (10 … 90 %) ≤ 55 ms ≤ 150 ms Step response time (ti: 0 s, ≤ 80 ms...
  • Page 57 The actual values depend on the diameter, material and strength of the diaphragm as well as the isolating liquid. They are available on request. Temperature coefficient of the chemical seal in mbar/10 K with Ʋ Flange DN 50 PN 40, Form C, 1.2 mbar/10 K DIN 2501 VEGABAR 81 • 4 … 20 mA...

  • Page 58: Ambient Conditions

    High temperature oil KN32 with -10 … +300 °C (+14 … +572 °F) -10 … +60 °C (+14 … +140 °F) cooling element Depending on which chemical seal is used, the values can also be higher. VEGABAR 81 • 4 … 20 mA...
  • Page 59 – ● Wire cross-section (spring-loaded terminals) Ʋ Massive wire, stranded wire 0.2 … 2.5 mm² (AWG 24 … 14) Ʋ Stranded wire with end sleeve 0.2 … 1.5 mm² (AWG 24 … 16) VEGABAR 81 • 4 … 20 mA...
  • Page 60 Display and adjustment module Display element Display with backlight Measured value indication Ʋ Number of digits Ʋ Size of digits W x H = 7 x 13 mm Adjustment elements 4 keys VEGABAR 81 • 4 … 20 mA...
  • Page 61 Operating voltage 35 V DC Max. input voltage 40 V DC Max. input current 131 mA Nominal leakage current < 10 kA (8/20 µs) Potential connections in the instrument Electronics Not non-floating Ground terminal Galvanically connected with the process fitting VEGABAR 81 • 4 … 20 mA...

  • Page 62: Chemical Seal With Vacuum Applications

    Instruments with approvals can have different technical specifications depending on the version. For that reason the associated approval documents of these instruments have to be carefully noted. They are part of the delivery or can be downloaded under www.vega.com, "VEGA Tools" and "Instrument search" as well as in the download area.
  • Page 63 Fig. 31: Area of application for high temperature oil KN 32 Standard chemical seal Chemical seal with vacuum service mbar 1000 T °C Fig. 32: Area of application for silicone oil KN 2.2 Standard chemical seal Chemical seal with vacuum service VEGABAR 81 • 4 … 20 mA...
  • Page 64 Fig. 33: Area of application for silicone oil KN 17 Standard chemical seal Chemical seal with vacuum service mbar 1000 T °C Fig. 34: Area of application for Halocarbon oil KN 21 Standard chemical seal Chemical seal with vacuum service VEGABAR 81 • 4 … 20 mA...
  • Page 65 Fig. 35: Area of application for Neobee KN 59 Standard chemical seal Chemical seal with vacuum service mbar 1000 T °C Fig. 36: Area of application for med. white oil KN 92 Standard chemical seal Chemical seal with vacuum service VEGABAR 81 • 4 … 20 mA...

  • Page 66: Dimensions

    11 Supplement 11.3 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". Housing ~ 59 mm ~ 116 mm ~ 69 mm (2.32") (4.57") (2.72")
  • Page 67 (1.64") ~ 66 mm (2.60") 110 mm x 90 mm (4.33" x 3.54") Fig. 38: IP 68 version with external housing Lateral cable outlet Axial cable outlet Plastic housing Stainless steel housing, electropolished VEGABAR 81 • 4 … 20 mA...
  • Page 68 ø 39 mm (1.54") ø 60 mm (2.36") Fig. 39: VEGABAR 81, threaded fitting GE G½ (ISO 228-1), >105 °C with temperature adapter GK G¾ (DIN 3852-E) GL G1 (DIN 3852-E) GN G1½ (DIN 3852-A) VEGABAR 81 • 4 … 20 mA...
  • Page 69 4.09" 0.39" RD44x " 4.09" 0.79" Fig. 40: 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 • 4 … 20 mA...
  • Page 70 3" 24,3 152,4 4 x ø19 152,5 3" 24,3 152,4 Fig. 41: VEGABAR 81, flange connection, dimensions in mm Flange connection according to DIN 2501 Flange connection according to ASME B16.5 Diaphragm diameter VEGABAR 81 • 4 … 20 mA...
  • Page 71 4 x ø0.75" 6" 2.99" 2.84" 3" 7.48" 0.96" 6" 5" 0.08" Fig. 42: VEGABAR 81, flange connection, dimensions in inch Flange connection according to DIN 2501 Flange connection according to ASME B16.5 Diaphragm diameter VEGABAR 81 • 4 … 20 mA...
  • Page 72 16..100 7.87" 5.43" 6.3" 0.71" 3.5" 0.79" 5.43" 3.5" Fig. 43: VEGABAR 81, flange and cell isolating diaphragm with capillary line Flange isolating diaphragm with capillary line Cell isolating diaphragm with capillary line VEGABAR 81 • 4 … 20 mA...
  • Page 73 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 74 Electronics and terminal compartment, single chamber housing 23, 25 Fault rectification 47 Grounding 21 Linearization 35 Maintenance 47 Measurement setup 16, 17, 18 Measuring system 9 Operation 28 – Menu 30 Parameterization example 32 Peak value indicator 37 VEGABAR 81 • 4 … 20 mA...
  • Page 75 Notes VEGABAR 81 • 4 … 20 mA...
  • Page 76 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2016 VEGA Grieshaber KG Phone +49 7836 50-0 Am Hohenstein 113...

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