Vega VEGABAR 87 Operating Instructions Manual
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Vega VEGABAR 87 Operating Instructions Manual

Pressure transmitter with metallic measuring cell
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Operating Instructions
Pressure transmitter with metallic
measuring cell
VEGABAR 87
Slave sensor for electronic differential pres-
sure
Document ID: 45053

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Summary of Contents for Vega VEGABAR 87

  • Page 1 Operating Instructions Pressure transmitter with metallic measuring cell VEGABAR 87 Slave sensor for electronic differential pres- sure Document ID: 45053...

  • Page 2: Table Of Contents

    Exchange process module on version IP68 (25 bar) ............42 How to proceed if a repair is necessary ................43 Dismount..........................44 Dismounting steps......................44 Disposal ......................... 44 Supplement ..........................45 Technical data ........................ 45 VEGABAR 87 • Slave sensor 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: 2020-05-12 VEGABAR 87 • Slave sensor 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 VEGABAR 87 is a slave sensor for electronic differential pressure measurement. You can find detailed information about the area of application in chapter "Product description".

  • Page 6: Installation And Operation In The Usa And Canada

    The environment management system is certified according to DIN EN ISO 14001. Please help us fulfil this obligation by observing the environmental instructions in this manual: • Chapter "Packaging, transport and storage" • Chapter "Disposal" VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 7: Product Description

    Fig. 1: Layout of the type label (example) Product code Field for approvals Technical data Serial number of the instrument QR code Symbol of the device protection class ID numbers, instrument documentation VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 8: Principle Of Operation

    • Flow • Differential pressure • Density • Interface Electronic differential The VEGABAR 87 slave sensor is combined with a sensor from the pressure VEGABAR 80 series for electronic differential pressure measurement. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 9 The METEC measuring cell is the measuring unit. It consists of ® the ceramic-capacitive CERTEC measuring cell and a special, ® temperature-compensated isolating system. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 10 ® temperature-compensated isolating system. Fig. 4: Configuration of the METEC measuring cell with VEGABAR 87 ® Process diaphragm Isolating liquid FeNi adapter CERTEC measuring cell ® VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 11: Packaging, Transport And Storage

    Welded sockets and Welded sockets are used to connect the sensors to the process. adapters Threaded adapters enable simple adaptation of sensors with stand- ard threaded fittings, e.g. to process-side hygiene connections. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 12: Mounting

    Devices with threaded fitting are screwed into the process fitting with Screwing in a suitable wrench via the hexagon. See chapter "Dimensions" for wrench size. VEGABAR 87 • Slave sensor 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. 5: Temperature ranges Process temperature Ambient temperature VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 14: Ventilation And Pressure Compensation

    4 Mounting Transport and mounting Depending on the transmitter, the VEGABAR 87 is supplied with a protection protective cap or a transport and mounting protection. Fig. 6: VEGABAR 87, transport and mounting protection Transmitter Transport and mounting protection Remove this protection after mounting and before setting up the instrument.
  • Page 15 Fig. 8: Position of the filter element - gastight leadthrough Filter element Filter element - Position IP69K version Fig. 9: Position of the filter element - IP69K version Filter element VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 16: Combination Master - Slave

    Turn Down: 0.4 bar /0.025 bar = 16 : 1 Output measured values The measuring result (level, pressure difference) as well as meas- ured value Slave (static or superimposed pressure) are output by the VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 17: 4.4 Differential Pressure Measurement

    Requirements for a functioning measurement are: • Vessel with changing level • Products with steady densities • Interface always between the measurement points • Total level always above the upper measurement point VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 18: Density Measurement

    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 87 • Slave sensor for electronic differential pressure...

  • Page 19: Density-Compensated Level Measurement

    Mount the master sensor below the min. level • Mount the slave sensor above the master sensor • Mount both sensors away from the filling stream and emptying and protected against pressure shocks from the stirrer VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 20 1 kg/dm . As soon as both sensors are covered, this value will be replaced by the calculated distance. The density-compensated level measurement is only possible in open, i.e. unpressurized vessels. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 21: External Housing

    4 Mounting External housing Configuration Fig. 14: Arrangement measurement loop, external housing Sensor Connection cable sensor, external housing External housing Signal cable VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 22: Connecting To Power Supply

    For this, use the supplied, confectioned cable. Solid cores as well as flexible cores with cable end sleeves are inserted directly into the terminal openings. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 23 9. Unscrew the blind plug on the Master, screw in the supplied cable gland 10. Connection cable to Master, see steps 3 to 8 11. Screw the housing lid back on VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 24: 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 87 • Slave sensor for electronic differential pressure...

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

    5 Connecting to power supply External housing with version IP68 (25 bar) Overview Fig. 17: VEGABAR 87 in IP68 version 25 bar, non-Ex and axial cable outlet, external housing Electronics and connec- tion compartment for power supply 4...20mA 6 7 8 Fig.
  • Page 26 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 87 • Slave sensor for electronic differential pressure...

  • Page 27: Connection Example

    Connection between master and sensor is carried out according to the table: Master sensor Slave sensor Terminal 5 Terminal 5 Terminal 6 Terminal 6 Terminal 7 Terminal 7 Terminal 8 Terminal 8 VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 28: Set Up With The Display And Adjustment Module

    In this menu item you activate/deactivate the slave sensor for elec- tronic differential pressure and select the application. The VEGABAR 87 in conjunction with a slave sensor can be used for flow, differential pressure, density and interface measurement. The default setting is differential pressure measurement. Switchover is carried out in the adjustment menu.
  • Page 29 With a master/slave combination in the application "Density-compen- sated level measurement" there are the following additional options for the position correction • Automatic correction, master (level) • Manual correction for the Master (level) VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 30 The position correction can be repeated any number of times. Parameterization example VEGABAR 87 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 31 2. Edit the percentage value with [OK] and set the cursor to the requested position with [->]. 3. Set the requested percentage value (e.g. 10 %) with [+] and save with [OK]. The cursor jumps now to the pressure value. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 32 "bidirectional-extracted by root" accordingly, see menu item "Liner- arization". The min. adjustment is finished. For an adjustment with pressure, simply enter the actual measured value indicated at the bottom of the display. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 33 2. Edit the mbar value with [OK] and set the cursor to the requested position with [->]. 3. Set the requested mbar value with [+] and store with [OK]. The span adjustment is finished. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 34 3. Set the requested percentage value with [+] and save with [OK]. The cursor jumps now to the density value. 4. Enter the max. density value corresponding to the percentage value. The max. adjustment for density is finished. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 35 3. Set the requested percentage value with [+] and save with [OK]. The cursor jumps now to the height value. 4. Enter the max. height of the interface corresponding to the per- centage value. The max. adjustment for interface is finished. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 36 [OK]. The cursor jumps now to the pressure value. 4. Enter the value for the full vessel (e.g. 10 m) corresponding to the percentage value. 5. Save settings with [OK] The max. adjustment is finished. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 37 As input signals, the output values of Transducer Block (TB) can be selected. 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 87 • Slave sensor for electronic differential pressure...
  • Page 38 In this menu item you can simulate measured values. This allows the HART signal path to be tested, e.g. through downstream indicating instru- ments or the input card of the control system. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 39 Without manual deactivation, the sensor terminates the simulation automatically after 60 minutes. 6.1.4 Additional adjustments Current output 1 and 2 In menu item "Current output, variable" you specify which measured (size) variable is output via the current output. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 40 Furthermore the adjustment for the volume or mass flow at 0 % or 100 % is carried out. The device automatically adds the flow in the selected unit. With appropriate adjustment and bidirectional linearization, the flow rate is counted both positively and negatively. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 41: Diagnosis, Asset Management And Service

    Should these measures not be successful, please call in urgent cases 24 hour service hotline 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 42: Exchange Process Module On Version Ip68 (25 Bar)

    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 Fig. 23: VEGABAR 87 in IP68 version, 25 bar and lateral cable outlet, external housing Process module...

  • Page 43: How To Proceed If A Repair Is Necessary

    Attach the completed form and, if need be, also a safety data sheet outside on the packaging • Ask the agency serving you to get the address for the return ship- ment. You can find the agency on our homepage. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 44: Dismount

    Pass the instrument directly on to a specialised recycling company and do not use the municipal collecting points. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 45: Supplement

    Plastic PBT (Polyester), 316L Ʋ Socket, wall mounting plate Plastic PBT (Polyester), 316L Ʋ Seal between base and wall mounting EPDM (fixed connected) plate Glass with Aluminium and stainless steel precision casting housing VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 46 0 … 1 bar/0 … 100 kPa 25 bar/+2500 kPa 0 bar abs. 0 … 2.5 bar/0 … 250 kPa 25 bar/+2500 kPa 0 bar abs. Data on overload capability apply for reference temperature. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 47 -10 … 100 % Ʋ Density value according to the measuring ranges in kg/dm Interface (min./max. adjustment) Ʋ Percentage value -10 … 100 % Ʋ Level value according to the measuring ranges in m VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 48 Non-linearity, hysteresis and repeata- Non-linearity, hysteresis and repeata- bility with TD 1 : 1 up to 5 : 1 bility with 5 : 1 0.1 % < 0.1 % < 0.02 % x TD VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 49 Applies to the respective digital signal output (e.g. HART, Profibus PA) as well as to analogue cur- rent output 4 … 20 mA under reference conditions. Specifications refer to the set span. Turn down (TD) is the ratio nominal measuring range/set span. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 50 6 … 12 mm 7 … 12 mm PA/NBR ● ● – Depending on the instrument version. 2 g with housing version stainless steel double chamber. IP66/IP68 (0.2 bar), only with absolute pressure. VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 51 Voltage supply for the complete system through Master Operating voltage Ʋ U 12 V DC B min Ʋ U with lighting switched on 16 V DC B min Breather capillaries not with Ex-d version. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 52: Calculation Of The Total Deviation

    Also these values are specified in chapter "Technical data". This applies for a digital signal output through HART, Profibus PA or Foundation Fieldbus. Galvanic separation between electronics and metal housing parts When used with fulfilled housing protection. VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 53: Practical Example

    Measurement of the level difference in two water reservoirs, 1,600 mm height corresponds to 0.157 bar (157 kPa), medium temperature 50 °C VEGABAR 87 with measuring range 0.4 bar, deviation < 0.1 %, meas. cell ø 28 mm 1. Calculation of the Turn down TD = 0.4 bar/0.157 bar, TD = 2.6 : 1...
  • Page 54 = √((F + (F perf = 0.26 % = 0.1 % = √(0.26 %) + (0.1 %) perf = 0.28 % perf - 2. step: Total deviation F total total perf stab VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 55: Dimensions

    The thermal change of the current output is in this example is negligible. 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". VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 56 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 87 • Slave sensor for electronic differential pressure...
  • Page 57 8 mm (0.12") (0.32") 110 mm x 90 mm (4.33" x 3.54") Fig. 29: VEGABAR 87, 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 58 1½ NPT ø 8 mm (0.32") ø 29 mm (1.14") ø 40 mm (1.58") Fig. 30: VEGABAR 87, standard fittings Straining clamp Threaded fitting Thread G1½ Thread 1½ NPT Lock fitting VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 59 0.12 " 3" 1 .25" 0.12 " 4" 10" 7.87 " 8xø0.63 " 6.19 " Fig. 31: VEGABAR 87, flange connection Flanges according to DIN 2501 Flanges according to ASME B16.5 VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 60 ø 92 mm (3.62") ø 8 mm (0.32") ø 40 mm (1.58") Fig. 32: VEGABAR 87, hygienic fittings Clamp 2" PN 16 (ø 64 mm) DIN 32676, ISO 2852 Slotted nut DN 50 VEGABAR 87 • Slave sensor for electronic differential pressure...

  • Page 61: 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 62 – Interface measurement 17 – Level difference measurement 17 – Level measurement 19 Peak value indicator 38 Position correction 29 Pressure compensation 15 – Second Line of Defense 15 – Standard 15 Repair 43 VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 63 Notes VEGABAR 87 • Slave sensor for electronic differential pressure...
  • Page 64 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2020 VEGA Grieshaber KG Phone +49 7836 50-0 Am Hohenstein 113 Fax +49 7836 50-201 E-mail: info.de@vega.com...

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