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3 Product description

VEGADIF 85 • Profibus PA

53569-EN-230814

The pressures in two different pipelines are acquired via effective

pressure lines. The device determines the differential pressure.

Fig. 3: Measurement of the differential pressure in pipelines with VEGADIF 85,

differential pressure Δp = p

- p

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

seal at two different measuring points.

–

Fig. 4: Density measurement with VEGADIF 85

The instrument can also be used for interface measurement in a ves

sel with changing level. The instrument is connected to the vessel via

a chemical seal at two different measuring points.

–

Fig. 5: Interface measurement with VEGADIF 85

Differential pressure

measurement

Density measurement

Interface measurement

Содержание VEGADIF 85

Страница 1: ...Operating Instructions Differential pressure transmitter with metallic measuring diaphragm VEGADIF 85 Profibus PA Document ID 53569...

Страница 2: ...Instructions for oxygen applications 15 4 3 Connection to the process 15 4 4 Mounting and connection instructions 16 4 5 Measurement setups 18 5 Connecting to the bus system 27 5 1 Preparing the conn...

Страница 3: ...9 11 Dismount 70 11 1 Dismounting steps 70 11 2 Disposal 70 12 Supplement 71 12 1 Technical data 71 12 2 Device communication Profibus PA 82 12 3 Calculation of the total deviation 85 12 4 Calculation...

Страница 4: ...e 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...

Страница 5: ...ns This is a state of the art instrument complying with all prevailing regulations and directives The instrument must only be operated in a technically flawless and reliable condition The operating co...

Страница 6: ...peration in the USA and Canada This information is only valid for USA and Canada Hence the follow ing text is only available in the English language Installations in the US shall comply with the relev...

Страница 7: ...following instrument versions 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 th...

Страница 8: ...ssure vessels The static pressure is compensated by differ ential pressure measurement It is available as a separate measured value for digital signal outputs Fig 1 Level measurement with VEGADIF 85 i...

Страница 9: ...easurement in a vessel with changing level and homogeneous density distribution can be easily realized The instrument is connected to the vessel via a chemical seal at two different measuring points F...

Страница 10: ...3 2 1 Fig 6 Configuration metallic measuring cell 1 Filling fluid 2 Temperature sensor 3 Absolute pressure sensor static pressure 4 Overload system 5 Differential pressure sensor 6 Separating diaphrag...

Страница 11: ...the time of installation the packages must be left closed and stored according to the orientation and storage markings on the outside Unless otherwise indicated the packages must be stored only under...

Страница 12: ...ge arrester B81 35 is used instead of the terminals in the single or double chamber housing The protective cover protects the sensor housing against soiling and intense heat from solar radiation The s...

Страница 13: ...on one side In order to prevent damage to the device a test pressure acting on both sides may only exceed the specified MWP briefly by 1 5 times at reference temperature The pressure stage of the proc...

Страница 14: ...tion A high pressure cleaner may not be used for cleaning For better readability of the display or access to the wiring the elec tronics housing can be rotated by 330 A stop prevents the housing from...

Страница 15: ...he flow rate is measured via this dif ferential pressure Typical DP flow elements are Venturi tubes orifice plates or impact pressure probes Instructions for mounting the DP flow elements are stated i...

Страница 16: ...echnical data Note Use the supplied parts and seal the thread with four layers of PTFE tape 4 4 Mounting and connection instructions When connecting VEGADIF 85 to the measuring point take note of the...

Страница 17: ...ck 1 Process fitting 2 Process fitting 3 Inlet valve 4 Inlet valve 5 Breather valve A A 2 2 1 3 4 5 Fig 10 Connection of a 3 fold valve block flanging on both sides 1 Process fitting 2 Process fitting...

Страница 18: ...let valve 4 Breather valve 5 Inlet valve 6 Valve for checking ventilating 7 Valve for checking ventilating 4 5 Measurement setups 4 5 1 Overview The following sections show common measurement setups L...

Страница 19: ...rs and drain valves is recom mended Debris and sediment can thus be collected and removed min max 1 3 4 3 4 5 2 1 Fig 12 Measurement setup level measurement in closed vessel 1 Blocking valves 2 3 fold...

Страница 20: ...g 14 Measurement setup level measurement in closed vessel 1 VEGADIF 85 Mount device below the lower measurement connection so that the effective pressure lines are always filled with liquid Always con...

Страница 21: ...steam 1 Condensate vessel 2 Blocking valves 3 3 fold valve block 4 Precipitator 5 Drain valves 6 VEGADIF 85 4 5 3 Flow 3 2 1 Fig 16 Measurement setup with flow measurement of gases connection via 3 fo...

Страница 22: ...ssels 2 Orifice or impact pressure probe 3 Blocking valves 4 3 fold valve block 5 Drain or blow off valves 6 VEGADIF 85 Mount device below the measurement loop so that the effective pressure lines are...

Страница 23: ...ntial pressure Mount device above the measurement loop so that condensate can drain off in the process cable 1 1 2 2 3 4 Fig 19 Measurement setup with differential pressure measurement between two pip...

Страница 24: ...ith liquid and gas bubbles can bubble up to the process line For measurement in products with solid content such as e g dirty liquids the installation of separators and drain valves is recom mended De...

Страница 25: ...s possible to ensure a high measurement accuracy The ambient temperature should be the same for both capillaries p h g 0 3 m Fig 23 Measurement setup for density measurement Density measurement is onl...

Страница 26: ...ossible if the densities of the two media remain the same and the interface is between the two meas urement points The total level must be above the upper measurement point This density measurement fu...

Страница 27: ...ch cable outer diameter the cable gland is suitable for Use a cable gland fitting the cable diameter Make sure that the entire installation is carried out according to the Profibus specification In pa...

Страница 28: ...are connected via the spring loaded terminals in the housing Connection to the display and adjustment module or to the interface adapter is carried out via contact pins in the housing Information The...

Страница 29: ...d The seal ring must completely encircle the cable 10 Reinsert the display and adjustment module if one was installed 11 Screw the housing lid back on The electrical connection is finished 5 3 Wiring...

Страница 30: ...ion compartment 2 Contact pins for the display and adjustment module or interface adapter 3 Selection switch for bus address Bus 5 1 2 6 7 8 2 3 4 1 Fig 28 Connection compartment double chamber housin...

Страница 31: ...ter 3 Selection switch for bus address Bus 5 1 2 6 7 8 2 3 4 1 Fig 30 Connection compartment double chamber housing 1 Voltage supply signal output 2 For display and adjustment module or interface adap...

Страница 32: ...d connection compartment 1 Electronics module 2 Cable gland for voltage supply 3 Cable gland for connection cable transmitter 1 2 3 4 6 3 4 1 2 5 Fig 33 Connection of the process component in the hous...

Страница 33: ...rument address 4 For external display and adjustment unit 5 Ground terminal for connection of the cable screening 5 4 Switch on phase After connecting the instrument to power supply or after a voltage...

Страница 34: ...splaced by 90 It is not necessary to interrupt the power supply Proceed as follows 1 Unscrew the housing lid 2 Place the display and adjustment module on the electronics in the desired position and tu...

Страница 35: ...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 6 2 Adjustment system 1 2 Fig 37 D...

Страница 36: ...ay 2 Magnetic pen 3 Adjustment keys 4 Lid with inspection window When the and keys are pressed quickly the edited value or the cursor changes one value or position at a time If the key is pressed long...

Страница 37: ...nu item Setup Display Menu language 6 4 Parameter adjustment Quick setup To quickly and easily adapt the sensor to the application select the menu item Quick setup in the start graphic on the display...

Страница 38: ...nly be assigned once in the Profibus PA network The sensor is only recognized by the control system if the address is set correctly When the instrument is shipped address 126 is set This address can b...

Страница 39: ...in the adjustment menu Depending on the selected application different subchapters in the following adjustment steps are important There you can find the individual adjustment steps Enter the request...

Страница 40: ...the correction value This value must not be influ enced corrupted by product coverage or static pressure In case of a manual position correction the offset value is determined by the user Select for...

Страница 41: ...arameter adjustment example Min max adjustment level measure ment 1 Min level 0 corresponds to 0 0 mbar 2 Max level 100 corresponds to 490 5 mbar If these values are not known an adjustment with filli...

Страница 42: ...d move with ESC and to the max adjustment The min adjustment is finished For an adjustment with filling simply enter the actual measured value indicated at the bottom of the display Proceed as follows...

Страница 43: ...ter the actual measured value indicated at the bottom of the display Proceed as follows 1 Select with the menu item Max adjustment and confirm with OK 2 Edit the mbar value with OK and set the cursor...

Страница 44: ...ply enter the actual measured value indicated at the bottom of the display Proceed as follows Select in the menu item Setup with Adjustment and con firm with OK Now confirm the menu item Distance with...

Страница 45: ...adjustment for density is finished Proceed as follows 1 Select in the menu item Setup with Adjustment and con firm with OK Now confirm the menu item Distance with OK 2 Edit the sensor distance with O...

Страница 46: ...e measured value This applies for example to the flow measured via the differential pressure or the vessel volume measured via the level Correspond ing linearization curves are preprogrammed for such...

Страница 47: ...orrespond to the previous selection Min values for PV lin Proc and Out Scale process pressure in bar Max values for PV lin Proc and Out Scale process pressure in bar To damp process dependent measured...

Страница 48: ...bles the setting of the requested national lan guage The following languages are available German English French Spanish Russian Italian Dutch Portuguese Japanese Chinese Polish Czech Turkish In deliv...

Страница 49: ...n in chapter Asset Management The respective min and max measured values for the differential pressure and static pressure are stored in the sensor In menu item Peak indicator pressure both values are...

Страница 50: ...nt for summer winter daylight saving time After a reset certain parameter adjustments made by the user are reset The following reset functions are available Delivery status Restores the parameter sett...

Страница 51: ...Linearisation Linear AI FB 1 Channel Primary Value Scaling format Pressure Scaling 0 corresponds to 0 bar 100 corresponds to measuring range final value Damping PV FTime 1 s Lock adjustment Released...

Страница 52: ...e 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 The copied data...

Страница 53: ...gs of the special parameters only after having con tacted our service staff 6 5 5 Info In this menu item you can read out the instrument name and the instrument serial number In this menu item the har...

Страница 54: ...arameter adjustment data We recommended writing down the adjustment data e g in this op erating instructions manual and archiving them afterwards They are thus available for multiple use or service pu...

Страница 55: ...ec tion The DTMs can also be integrated into other frame applications according to FDT standard Note To ensure that all instrument functions are supported you should always use the latest DTM Collecti...

Страница 56: ...rd version In the full version there is also an extended print function for complete project documentation as well as a save function for measured value and echo curves In addition there is a tank cal...

Страница 57: ...N 230814 8 Set up sensor with other systems 8 1 DD adjustment programs Device descriptions as Enhanced Device Description EDD are available for DD adjustment programs such as for example AMS and PDM T...

Страница 58: ...cking valves Proceed as follows 1 Fill the vessel to just above the lower tap 2 Fill measuring system with medium Close valve 3 Separate high low pressure side Open valve A and B Open block valves 3 V...

Страница 59: ...ap 2 Fill measuring system with medium Open valve A and B Open block valves Fill the low pressure effective pressure line on the height of the condensation pot 3 Remove air from instrument Open valve...

Страница 60: ...anging on both sides I VEGADIF 85 II 3 fold valve block 2 4 Inlet valves 3 Breather valve 6 7 Vent valves on VEGADIF 85 A B 1 5 6 7 3 2 4 II I III III Fig 46 Preferred measurement setup for liquids I...

Страница 61: ...Open valve 3 Equalisation high and low pressure side Briefly open valve 6 and 7 then close again Fill the measuring instrument completely with the medium and remove air 4 Carry out a position correct...

Страница 62: ...f voltage interruption Up to 100 000 measured values can be stored in the sensor in a ring memory Each entry contains date time as well as the respective measured value Depending on the instrument ver...

Страница 63: ...of specification Maintenance required and explained by pictographs 4 1 2 3 Fig 47 Pictographs of the status messages 1 Failure red 2 Out of specification yellow 3 Function check orange 4 Maintenance...

Страница 64: ...epair Bit 4 F041 Communication error No connection to the sensor electronics Check connection between sen sor and main electronics with separate version Bit 13 F080 General software error General soft...

Страница 65: ...erat ing voltage Bit 26 S605 Impermissible pressure value Measured process pressure be low or above the adjustment range Check nominal measuring range of the instrument If necessary use an instrument...

Страница 66: ...available outside normal working hours seven days a week around the clock Since we offer this service worldwide the support is provided in English The service itself is free of charge the only costs i...

Страница 67: ...2 Nm for copper gaskets The process flanges are exchanged Note After installing the device in the measuring point carry out a position correction again 10 6 Exchange process module on version IP68 25...

Страница 68: ...ten the fixing screw with the hexagon key wrench The exchange is finished The necessary serial number can be found on the type label of the instrument or on the delivery note 10 7 Exchanging the elect...

Страница 69: ...t You can find detailed information in the download area at www vega com 10 9 How to proceed if a repair is necessary On our homepage you will find detailed information on how to pro ceed in the event...

Страница 70: ...res or tem peratures as well as aggressive or toxic media Avoid this by taking appropriate protective measures 11 2 Disposal Pass the instrument on to a specialised recycling company and do not use th...

Страница 71: ...plugs 316L Ventilation valves 316L Isolating liquid Standard applications Silicone oil Oxygen applications Halocarbon oil 4 Materials non wetted parts Electronics housing Plastic PBT polyester Alu die...

Страница 72: ...Aluminium Stainless steel housing 50 Nm 36 88 lbf ft Input variable Measuring ranges in bar Measuring range Nominal range Max adjustment range 10 mbar 10 mbar 10 mbar 12 mbar 12 mbar 30 mbar 30 mbar 3...

Страница 73: ...D is the relation nominal measuring range adjusted span Switch on phase Start up time with operating voltage UB 12 V DC 9 s 12 V DC 22 s Output variable Output signal digital output signal Profibus pr...

Страница 74: ...the chemical seal Dependent on the chemical seal Dependent on the chemical seal Version IP68 25 bar additionally 50 ms additionally 150 ms additionally 200 ms Damping 63 of the input variable 0 999 s...

Страница 75: ...hysteresis and non reproducibility The values apply to the digital signal output HART Profibus PA Foundation Fieldbus as well as to the analogue current output 4 20 mA For differential pressure they...

Страница 76: ...of the medium or ambient temperature Applies to instruments in basic version with digital signal output Specifications refer to the set span Turn down TD nominal measuring range set span Thermal chan...

Страница 77: ...kPa 2400 psi 400 bar 4000 kPa 5800 psi 160 bar 16000 kPa 2400 psi 0 10 x TD 400 bar 4000 kPa 5800 psi 0 25 x TD 160 bar 16000 kPa 2400 psi 0 10 400 bar 4000 kPa 5800 psi 0 25 500 mbar 50 kPa 7 3 psi 3...

Страница 78: ...Min permissible static pressure 10 mbar 1 kPa 40 bar 4000 kPa 40 bar 4000 kPa 60 bar 6000 kPa 1 mbarabs 100 Paabs 30 mbar 3 kPa 100 mbar 10 kPa 160 bar 16000 kPa 160 bar 16000 kPa 240 bar 24000 kPa 5...

Страница 79: ...the cable entry Cable entry M20 x 1 5 NPT Cable gland M20 x 1 5 NPT cable see below table Blind plug M20 x 1 5 NPT Closing cap NPT Material cable gland Seal insert Cable diameter 5 9 mm 6 12 mm 7 12...

Страница 80: ...ectrical data Wire cross section 0 5 mm AWG 20 Wire resistance R 0 037 m 0 012 ft Interface to the external display and adjustment unit Data transmission Digital I C Bus Connection cable Four wire Sen...

Страница 81: ...chamber IP66 IP67 Type 4X Double chamber Aluminium Single chamber IP66 IP67 IP66 IP68 0 2 bar IP66 IP68 1 bar Type 4X Type 6P Type 6P Double chamber IP66 IP67 IP66 IP68 1 bar Type 4X Type 6P Stainles...

Страница 82: ...ets an unambiguous ident number ID number from the Profibus user organisation PNO This ID number is also included in the name of the GSD file Optionally in ad dition to this manufacturer specific GSD...

Страница 83: ...module must be used if a value in the data telegram of the cyclical data traffic should not be used e g replacement of temperature and Additional Cyclic Value A maximum of three modules can be active...

Страница 84: ...mat of the output signal The status byte corresponds to profile 3 02 Profibus PA Profile for Process Control Devices coded The status Measured value OK is coded as 80 hex Bit7 1 Bit6 0 0 The measured...

Страница 85: ...n simulation Failsafe replacement value Failsafe Mode Fsafe value 0 x 4c uncertain initial value Failsafe replacement value Failsafe Mode Last valid value and no valid measured value since switching o...

Страница 86: ...on Fperf Basic deviation Fstab Long term stability FT Thermal change of zero signal and output span temperature error FKl Deviation Fa Thermal change of the current output FMZ Additional factor measur...

Страница 87: ...tal deviation digital output signal 1 step Basic accuracy Fperf Fperf FT 2 FKl 2 FT 0 25 FKl 0 065 Fperf 0 25 2 0 065 2 Fperf 0 26 2 step Total deviation Ftotal Ftotal Fperf Fstab Fperf 0 26 result of...

Страница 88: ...housing 69 mm 2 72 79 mm 3 11 112 mm 4 41 M20x1 5 NPT 84 mm 3 31 M16x1 5 112 mm 4 41 M20x1 5 NPT 1 2 79 mm 3 11 1 Plastic single chamber 2 Plastic double chamber Aluminium housing 2 1 86 mm 3 39 116...

Страница 89: ...tainless steel single chamber precision casting 3 Stainless steel double chamber housing precision casting Aluminium and stainless steel housing in protection IP66 IP68 1 bar 117 mm 4 61 120 mm 4 72 1...

Страница 90: ...rsion 1 2 4 3 84 mm 3 31 80 mm 3 15 84 mm 3 31 124 mm 4 88 41 4 mm 1 64 41 6 mm 1 64 90 mm 3 54 110 mm 4 33 66 mm 2 6 59 mm 2 32 51 mm 2 01 110 mm x 90 mm 4 33 x 3 54 Fig 53 External housing 1 Lateral...

Страница 91: ...EC 61518 7 16 20 UNF 316L incl 2 vent valves 316L 18 NPT IEC 61518 7 16 20 UNF Alloy C276 2 4819 18 NPT IEC 61518 7 16 20 UNF Super Duplex 2 4410 Lateral ventilation 60 mm 2 36 41 3 mm 1 63 91 mm 3 58...

Страница 92: ...connection 2 3 7 16 20 UNF 1 60 mm 2 36 91 mm 3 58 86 1 mm 3 39 54 mm 2 13 41 3 mm 1 63 86 1 mm 3 39 54 mm 2 13 Fig 56 left Process fitting VEGADIF 85 prepared for chemical seal assembly right Positio...

Страница 93: ...unter www vega com Les lignes de produits VEGA sont globalement prot g es par des droits de propri t intellec tuelle Pour plus d informations on pourra se r f rer au site www vega com VEGA lineas de p...

Страница 94: ...94 Notes VEGADIF 85 Profibus PA 53569 EN 230814...

Страница 95: ...95 Notes VEGADIF 85 Profibus PA 53569 EN 230814...

Страница 96: ...ing scope of delivery application practical use and operat ing conditions of the sensors and processing systems correspond to the information available at the time of printing Subject to change withou...

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