Vega VEGADIF 85 Operating Instructions Manual
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Vega VEGADIF 85 Operating Instructions Manual

Differential pressure transmitter with metallic measuring diaphragm
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Operating Instructions
Differential pressure transmitter with
metallic measuring diaphragm
VEGADIF 85
4 ... 20 mA
Document ID: 53566

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Summary of Contents for Vega VEGADIF 85

  • Page 1 Operating Instructions Differential pressure transmitter with metallic measuring diaphragm VEGADIF 85 4 … 20 mA Document ID: 53566...

  • Page 2: Table Of Contents

    Level measurement ......................54 Flow measurement ......................56 Diagnosis, asset management and service ................ 58 Maintenance ........................58 Diagnosis memory ......................58 Asset Management function ................... 59 Rectify faults ........................61 8.5 Replace process flanges ....................62 VEGADIF 85 • 4 … 20 mA...
  • Page 3 10.5 Industrial property rights ....................84 10.6 Trademark ........................84 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. Editing status: 2020-09-22 VEGADIF 85 • 4 … 20 mA...

  • 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

    To avoid any danger, the safety approval markings and safety tips on the device must also be observed. 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 field instrumentation. VEGADIF 85 • 4 … 20 mA...

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

    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 fulfil this obligation by observing the environmental instructions in this manual: • Chapter " Packaging, transport and storage" • Chapter " Disposal" VEGADIF 85 • 4 … 20 mA...

  • Page 7: Product Description

    Hardware from 1.0.0 • Software from 1.3.4 Note: You can find the hardware and software version of the instrument as follows: • On the type plate of the electronics module • In the adjustment menu under " Info" Type label The type label contains the most important data for identification and use of the instrument: VEGADIF 85 • 4 … 20 mA...

  • Page 8: Principle Of Operation

    Alternatively, you can access the data via your smartphone: • Download the VEGA Tools app from the " Apple App Store" or the " Google Play Store" • Scan the DataMatrix code on the type label of the instrument or •...
  • Page 9 Fig. 2: Level measurement with VEGADIF 85 in a pressurized vessel Flow measurement The flow measurement is carried out via an effective pressure trans- mitter, such as an orifice plate or pitot tube. The device records the resulting pressure difference and converts the measured value into the flow. With digital signal outputs, the static pressure is available as a separate measured value. – Fig. 3: Flow measurement with VEGADIF 85 and orifice, Q = flow, differential pressure Δp = p Differential pressure The pressures in two different pipelines are acquired via effective measurement pressure lines. The device determines the differential pressure. VEGADIF 85 • 4 … 20 mA...
  • Page 10 3 Product description Fig. 4: Measurement of the differential pressure in pipelines with VEGADIF 85, differential pressure Δp = p Density measurement With the help of the instrument, density measurement in a vessel with changing level and homogeneous density distribution can be easily realized. The instrument is connected to the vessel via a chemical...

  • Page 11: Supplementary Cleaning Procedures

    Caution: The VEGADIF 85 in this version may not be used in oxygen applica- tions. For this purpose, instruments are available in the special ver- sion "Oil, grease and silicone-free for oxygen applications".

  • Page 12: Packaging, Transport And Storage

    The integrated Bluetooth module (optional) enables wireless adjust- ment via standard adjustment devices. The interface adapter VEGACONNECT enables the connection of VEGACONNECT communication-capable instruments to the USB interface of a PC. VEGADIF 85 • 4 … 20 mA...
  • Page 13 The suitable mounting accessories for VEGADIF 85 include oval Mounting accessories flange adapters, valve blocks as well as mounting brackets. Chemical seal Through the use of chemical seals, VEGADIF 85 can also be used for corrosive, highly viscous or hot media. VEGADIF 85 • 4 … 20 mA...

  • Page 14: Mounting

    This applies mainly to outdoor installations, in areas where high humidity is expected (e.g. through cleaning processes) and on cooled or heated vessels. Note: Make sure that during installation or maintenance no moisture or dirt can get inside the instrument. VEGADIF 85 • 4 … 20 mA...
  • Page 15 Higher process temperatures often mean also higher ambient temperatures. 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. VEGADIF 85 • 4 … 20 mA...

  • Page 16: Instructions For Oxygen Applications

    Recommendations for wiring of effective pressure lines are stated in the corresponding national and international standards. Connection Effective pressure lines are connected to the device via standard cut- ting ring screw connections with suitable thread. Note: Follow the mounting instructions of the respective manufacturer and seal the thread, e.g. with PTFE tape. VEGADIF 85 • 4 … 20 mA...

  • Page 17: Mounting And Connection Instructions

    Use the supplied parts and seal the thread with four layers of PTFE tape. Mounting and connection instructions Connection high/low When connecting VEGADIF 85 to the measuring point, take note of pressure side the high/low pressure side of the process component. The " H" identifies the high pressure side, the low pressure side due to an " L" on the process component next to the oval flanges.
  • Page 18 Inlet valve Inlet valve Breather valve 3-fold valve block - flang- ing on both sides Fig. 11: Connection of a 3-fold valve block, flanging on both sides Process fitting Process fitting Inlet valve Inlet valve Breather valve VEGADIF 85 • 4 … 20 mA...

  • Page 19: Measurement Setups

    The following sections show common measurement setups: • Level • Flow • Differential pressure • Interface • Density Depending on the application, there may also be different arrange- ments. Note: For simplification, the effective pressure lines are partly shown with a horizontal course and sharp angles. For wiring, please observe the instructions in chapter " Mounting, Connection to the process" as well VEGADIF 85 • 4 … 20 mA...
  • Page 20 • For measurement in products with solid content, such as e.g. dirty liquids, the installation of separators and drain valves is recom- mended. Debris and sediment can thus be collected and removed. VEGADIF 85 • 4 … 20 mA...
  • Page 21 • For measurement in products with solid content, such as e.g. dirty liquids, the installation of separators and drain valves is recom- mended. Debris and sediment can thus be collected and removed. VEGADIF 85 • 4 … 20 mA...
  • Page 22 In gases Fig. 17: Measurement setup with flow measurement of gases, connection via 3-fold valve block, flanging on both sides Orifice or impact pressure probe 3-fold valve block, flanging on both sides VEGADIF 85 VEGADIF 85 • 4 … 20 mA...
  • Page 23 For measurements in products with solid content such as e.g. dirty liquids, the installation of separators and drain valves is recom- mended to enable collection and removal of debris and sediment. • Fill the effective pressure lines to the height of the condensate vessels before setup VEGADIF 85 • 4 … 20 mA...
  • Page 24 Fig. 20: Measurement setup with differential pressure measurement between two pipelines in gases and vapours Pipelines Blocking valves 3-fold valve block VEGADIF 85 • In vapour and conden- Mount device below the measurement loop so that some conden- sate plants sate can collect in the effective pressure lines. VEGADIF 85 • 4 … 20 mA...
  • Page 25 E.g. filter Blocking valves 3-fold valve block Precipitator Drain valves VEGADIF 85 • When chemical seal Mount chemical seal with capillaries on top or laterally on the systems are used in all pipeline products VEGADIF 85 • 4 … 20 mA...
  • Page 26 4 Mounting • In vacuum applications: Mount VEGADIF 85 below the measure- ment loop • The ambient temperature should be the same for both capillaries – Fig. 23: Measurement setup, differential pressure measurement in gases, vapours and liquids Chemical seal with slotted nut Capillaries E.g.
  • Page 27 800 kg/m³, max. density 1000 kg/m³ Carry out min. adjustment for the differential pressure which is meas- ured at the height of the interface on the lower measurement point: Δp = ρ • g • h = 800 kg/m³ • 9.81 m/s • 0.3 m = 2354 Pa = 23.54 mbar Carry out max. adjustment for the differential pressure which is meas- ured at the height of the interface on the upper measurement point: Δp = ρ • g • h = 1000 kg/m³ • 9.81 m/s • 0.3 m = 2943 Pa = 29.43 mbar VEGADIF 85 • 4 … 20 mA...

  • Page 28: Connecting To Power Supply

    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 free openings for the cable glands are therefore covered with red dust protection caps as transport protection. VEGADIF 85 • 4 … 20 mA...

  • Page 29: 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 VEGADIF 85 • 4 … 20 mA...

  • Page 30: Wiring Plans

    10. Reinsert the display and adjustment module, if one was installed 11. Screw the housing lid back on The electrical connection is finished. Wiring plans 5.3.1 Single chamber housing The following illustration applies to the non-Ex, Ex-ia and Ex-d ver- sion. VEGADIF 85 • 4 … 20 mA...
  • Page 31 5.3.2 Housing IP66/IP68 (1 bar) Wire assignment, con- nection cable Fig. 28: Wire assignment in permanently connected connection cable Brown (+) and blue (-) to power supply or to the processing system Shielding VEGADIF 85 • 4 … 20 mA...
  • Page 32 Cable gland for voltage supply Cable gland for connection cable, transmitter Terminal compartment, housing socket 1 2 3 4 Fig. 30: Connection of the process component in the housing base Yellow White Black Shielding Breather capillaries VEGADIF 85 • 4 … 20 mA...

  • Page 33: Switch-On Phase

    The output signal jumps to the set fault current Then the actual measured value is output to the signal cable. The value takes into account settings that have already been carried out, e.g. default setting. VEGADIF 85 • 4 … 20 mA...

  • Page 34: Set Up The Sensor With The Display And Adjustment Module

    Fig. 32: 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. VEGADIF 85 • 4 … 20 mA...

  • Page 35: Adjustment System

    The pen oper- ates the four keys of the display and adjustment module right through the closed lid (with inspection window) of the sensor housing. VEGADIF 85 • 4 … 20 mA...

  • Page 36: Measured Value Indication

    With the " OK" key you move (during the initial setup of the instru- ment) to the selection menu " Language". Selection language In this menu item, you can select the national language for further parameterization. VEGADIF 85 • 4 … 20 mA...

  • Page 37: Parameter Adjustment - Quick Setup

    Setup: Settings, e.g., for measurement loop name, application, units, position correction, adjustment, signal output Display: Settings, e.g., for language, measured value display, lighting Diagnosis: Information, e.g. on instrument status, pointer, measure- ment reliability, simulation VEGADIF 85 • 4 … 20 mA...
  • Page 38 Unit of measurement: In this menu item, the adjustment units of the instrument are deter- mined. The selection determines the unit displayed in the menu items "Min. adjustment (Zero)" and "Max. adjustment (Span)". VEGADIF 85 • 4 … 20 mA...
  • Page 39 The installation position of the instrument can shift the measured Position correction value (offset). The position correction function compensates this offset. In the process the current measured value can be accepted automatically. VEGADIF 85 has two separate sensor systems: one sensor for dif- ferential pressure and one sensor for static pressure. The following possibilities thus result for position correction: • Automatic correction for both sensors •...
  • Page 40 The position correction can be repeated any number of times. Adjustment VEGADIF 85 always measures pressure independently of the process variable selected in the menu item "Application". To output the se- lected process variable correctly, an allocation of the output signal to 0 % and 100 % must be carried out (adjustment).
  • Page 41 1. Select the menu item "Setup" with [->] and confirm with [OK]. Now select with [->] the menu item "Min. adjustment" and confirm with [OK]. 2. Edit the mbar value with [OK] and set the cursor to the requested position with [->]. VEGADIF 85 • 4 … 20 mA...
  • Page 42 The Zero adjustment shifts the value of the span adjustment. The span, i.e. the difference between these values, however, remains unchanged. 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 VEGADIF 85 • 4 … 20 mA...
  • Page 43 5. Save settings with [OK] and move with [ESC] and [->] to the max. adjustment. The min. adjustment for density is finished. Max. adjustment density 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]. VEGADIF 85 • 4 … 20 mA...
  • Page 44 5. Save settings with [OK] and move with [ESC] and [->] to the max. adjustment. The min. adjustment for interface is thus finished. Max. adjustment interface 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]. VEGADIF 85 • 4 … 20 mA...
  • Page 45 Note the following, if the respective sensor is used as part of an over- fill protection system according to WHG: If a linearisation curve is selected, the measuring signal is no longer necessarily linear to the filling height. This must be considered by the 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. VEGADIF 85 • 4 … 20 mA...
  • Page 46 Releasing the sensor adjustment is also possible in any menu item by entering the PIN. Caution: With active PIN, adjustment via PACTware/DTM and other systems is also blocked. 6.5.2 Display Language This menu item enables the setting of the requested national lan- guage. VEGADIF 85 • 4 … 20 mA...
  • Page 47 Polish • Czech • Turkish In delivery status, the VEGADIF 85 is set to English. Display value 1 and 2 - In this menu item, you define which measured value is displayed. 4 … 20 mA The default setting for the displayed value is "Differential pressure". Display format 1 and 2 In this menu item you define the number of decimal positions with which the measured value is displayed.
  • Page 48 [OK] key. Caution: During simulation, the simulated value is output as 4 … 20 mA current value and with instruments 4 … 20 mA/HART in addition as digital HART signal. The status message within the context of the asset management function is "Maintenance". VEGADIF 85 • 4 … 20 mA...
  • Page 49 Level Units Unit of measurement mbar (with nominal measuring range ≤ 400 mbar) bar (with nominal measuring ranges ≥ 1 bar) Temperature unit °C Position correction 0.00 bar Adjustment Zero/Min. adjustment 0.00 bar 0.00 % Span/Max. adjustment Nominal measuring range in bar 100.00 % Damping Integration time Linearisation Linear VEGADIF 85 • 4 … 20 mA...
  • Page 50 0 % corresponds to 0 l 100 % corresponds to 0 l Current output Current output - Meas. Lin. percent - Level variable Current output - Adjust- 0 … 100 % correspond to 4 … 20 mA ment VEGADIF 85 • 4 … 20 mA...
  • Page 51 0 % and 100 %. Current output (meas. In menu item "Current output, variable" you specify which measured variable) variable is output via the current output. VEGADIF 85 • 4 … 20 mA...
  • Page 52 Change the settings of the special parameters only after having con- tacted our service staff. 6.5.5 Info Device name In this menu item, you can read out the instrument name and the instrument serial number: VEGADIF 85 • 4 … 20 mA...

  • Page 53: Saving The Parameterisation Data

    In the display and adjust- If the instrument is equipped with a display and adjustment module, ment module the parameter adjustment data can be saved therein. The procedure is described in menu item "Copy device settings". VEGADIF 85 • 4 … 20 mA...

  • Page 54: Set Up Measuring System

    III Precipitator 1, 5 Drain valves 2, 4 Inlet valves Breather valve 6, 7 Vent valves on VEGADIF 85 A, B Blocking valves Proceed as follows: 1. Fill the vessel to just above the lower tap 2. Fill measuring system with medium...
  • Page 55 IV Condensate vessel 1, 5 Drain valves 2, 4 Inlet valves Breather valve 6, 7 Vent valves on VEGADIF 85 A, B Blocking valves Proceed as follows: 1. Fill the vessel to just above the lower tap 2. Fill measuring system with medium...

  • Page 56: Flow Measurement

    Fig. 38: Prefered measurement setup for gases, connection via 3-fold valve block, flanging on both sides VEGADIF 85 3-fold valve block 2, 4 Inlet valves Breather valve 6, 7 Vent valves on VEGADIF 85 Liquids – Fig. 39: Preferred measurement setup for liquids VEGADIF 85 3-fold valve block...
  • Page 57 Now: Valves 1, 3, 5, 6 and 7 are closed Valves 2 and 4 are open Valves A and B open 6. Carry out position correction, if flow can be blocked. In this case, step 5 is not required. Arrangement with 5 valves. Valves 1, 3, 5: Configuration with 5 valves. VEGADIF 85 • 4 … 20 mA...

  • Page 58: Diagnosis, Asset Management And Service

    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. Event memory 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: • Modification of a parameter VEGADIF 85 • 4 … 20 mA...

  • Page 59: Asset Management Function

    Maintenance required: Due to external influences, the instrument function is limited. The measurement is affected, but the measured value is 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. VEGADIF 85 • 4 … 20 mA...
  • Page 60 F265 Sensor no longer carries out a meas- Carry out a reset urement Measurement function dis- Disconnect operating voltage briefly turbed Tab. 5: Error codes and text messages, information on causes as well as corrective measures VEGADIF 85 • 4 … 20 mA...

  • Page 61: Rectify Faults

    Tab. 8: Error codes and text messages, information on causes as well as corrective measures Rectify faults Reaction when malfunc- The operator of the system is responsible for taking suitable meas- tion occurs ures to rectify faults. Fault rectification The first measures are: VEGADIF 85 • 4 … 20 mA...

  • Page 62: Replace Process Flanges

    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 63: Exchange Process Module On Version Ip68 (25 Bar)

    The exchange may only be carried out in the complete absence of line voltage. In Ex applications, only a replacement part with appropriate Ex ap- proval may be used. Caution: During exchange, protect the inner side of the parts against contami- nation and moisture. VEGADIF 85 • 4 … 20 mA...

  • Page 64: Exchanging The Electronics Module

    8 Diagnosis, asset management and service 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. 41: VEGADIF 85 in IP68 version, 25 bar and lateral cable outlet, external housing Process module Plug connector...

  • Page 65: 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. VEGADIF 85 • 4 … 20 mA...

  • Page 66: 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. VEGADIF 85 • 4 … 20 mA...

  • Page 67: Supplement

    A2-70, hexagon nut DIN 934 M8 A2-70 Ʋ Ground terminal 316Ti/316L Ʋ Connection between IP68 transmitter PE, PUR and external electronics housing Note deviating process temperature limits Glass with Aluminium and stainless steel precision casting housing VEGADIF 85 • 4 … 20 mA...
  • Page 68 7.5 psig -7.5 psig +7.5 psig 45 psig -45 psig -45 psig 240 psig -240 psig +240 psig Adjustment ranges Maximum permissible Turn Down Unlimited (recommended up to 20 : 1) 4 layers PTFE The specifications refer to the nominal measuring range. VEGADIF 85 • 4 … 20 mA...
  • Page 69 Max. output current 21.5 mA Load See load resistance under Power supply Damping (63 % of the input variable), 0 … 999 s adjustable Dynamic behaviour output Dynamic characteristics depending on medium and temperature VEGADIF 85 • 4 … 20 mA...
  • Page 70 Via the current output, the additional current output Ʋ Digital Via the digital output signal (depending on the electron- ics version) Reference conditions and influencing variables (according to DIN EN 60770-1) Reference conditions according to DIN EN 61298-1 Ʋ Temperature +18 … +30 °C (+64 … +86 °F) Ʋ Relative humidity 45 … 75 % VEGADIF 85 • 4 … 20 mA...
  • Page 71 3 bar (300 kPa)/43.51 psi 400 bar (40000 kPa) 16 bar (1600 kPa)/232.1 psi Influence of the medium or ambient temperature The values apply to the digital signal output as well as to the analogue current output 4 … 20 mA. Turn down (TD) is the ratio "nominal measuring range/set span". Measuring range end, absolute pressure VEGADIF 85 • 4 … 20 mA...
  • Page 72 4 … 20 mA and refer to the set span. Turn down (TD) is the ratio "nominal measuring range/set span". Change zero signal and output span Relating to the adjusted span. Relating to the measuring range end value. Measuring range end, absolute pressure. VEGADIF 85 • 4 … 20 mA...
  • Page 73 Halocarbon oil for oxygen applica- -10 … +60 °C (-4 … +140 °F) tions Copper Silicone oil -40 … +85 °C (-40 … +185 °F) Halocarbon oil for oxygen applica- -20 … +60 °C (-4 … +140 °F) tions Measuring range end, absolute pressure. Relating to the adjusted span. Relating to the measuring range end value. VEGADIF 85 • 4 … 20 mA...
  • Page 74 Options of the cable entry Ʋ Cable entry M20 x 1.5; ½ NPT Ʋ Cable gland M20 x 1.5, ½ NPT (cable ø see below table) Reference temperature +25 °C (+77 °F). 2 g with housing version stainless steel double chamber IP66/IP68 (0.2 bar), only with absolute pressure. VEGADIF 85 • 4 … 20 mA...
  • Page 75 Blue Connection cable, electrical data Ʋ Wire cross-section 0.5 mm² (AWG 20) Ʋ Wire resistance R 0.037 Ω/m (0.012 Ω/ft) ´ Interface to the external display and adjustment unit Data transmission Digital (I²C-Bus) Connection cable Four-wire VEGADIF 85 • 4 … 20 mA...
  • Page 76 Ʋ Example - U = 24 V DC (24 V - 11 V)/0.022 A = 591 Ω Potential connections and electrical separating measures in the instrument Electronics Not non-floating Reference voltage 500 V AC Conductive connection Between ground terminal and metallic process fitting Galvanic separation between electronics and metal housing parts VEGADIF 85 • 4 … 20 mA...

  • Page 77: Calculation Of The Total Deviation

    • : Long-term stability stab • : Thermal change of zero signal and output span (temperature error) • : Deviation • : Thermal change of the current output • FMZ: Additional factor measuring cell version • FTD: Additional factor Turn down When used with fulfilled housing protection. VEGADIF 85 • 4 … 20 mA...

  • Page 78: Calculation Of The Total Deviation - Practical Example

    10 Supplement 10.3 Calculation of the total deviation - Practical example Data Differential pressure 250 mbar (25 KPa), medium temperature on the measuring cell 60 °C VEGADIF 85 with measuring range 500 mbar The required values for the temperature error F , deviation F and long-term stability F are avail- stab able in the technical data.

  • Page 79: Dimensions, Versions Process Component

    10.4 Dimensions, versions process component 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". Relating to the measuring range end value. VEGADIF 85 • 4 … 20 mA...
  • Page 80 9 mm/0.35 in higher, with Aluminium and stainless steel precision casting hous- ings 18 mm/0.71 in 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 VEGADIF 85 • 4 … 20 mA...
  • Page 81 8 mm (0.12") (0.32") 110 mm x 90 mm (4.33" x 3.54") Fig. 45: IP68 version with external housing Lateral cable outlet Cable outlet axial Plastic single chamber Stainless steel single chamber (electropolished) VEGADIF 85 • 4 … 20 mA...
  • Page 82 Superduplex (2.4410) without Lateral ventilation 80 mm 54 mm (3.15") (2.13") 86,1 mm (3.39") Fig. 47: VEGADIF 85, ¼-18 NPT connection, with lateral ventilation Connection Fastening Material Scope of delivery ¼-18 NPT, IEC 61518 7/16-20 UNF 316L incl. 4 closing screws and 2 ventilation valves ¼-18 NPT, IEC 61518...
  • Page 83 (2.13") 86,1 mm 86,1 mm (3.39") (3.39") Fig. 48: left: Process fitting VEGADIF 85 prepared for chemical seal assembly. right: Position of the copper ring seal Chemical seal connection Copper ring seal Separating diaphragm VEGADIF 85 • 4 … 20 mA...

  • Page 84: 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 85 Notes VEGADIF 85 • 4 … 20 mA...
  • Page 86 Notes VEGADIF 85 • 4 … 20 mA...
  • Page 87 Notes VEGADIF 85 • 4 … 20 mA...
  • Page 88 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2020 VEGA Grieshaber KG Phone +49 7836 50-0 Am Hohenstein 113...

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