Vega VEGAPULS 56K Скачать руководство пользователя страница 40 | Manualshive

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VEGAPULS 56K

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Mounting and installation

4.4 False echoes

The installation place of the radar sensor must
be chosen such that no struts or inflowing
material cross the radar signals. The following
examples and instructions show frequent
meas. problems and how they can be
avoided.

Shoulders

Vessel forms with flat shoulders pointing to the
antenna can influence the measurement due
to their hard false echoes. Deflectors above
these flat shoulders diffuse the false echoes
and ensure a reliable measurement.

Inlets, e.g. for material mixing with flat surface
pointing to the radar sensor, should be
covered by a screen. False echoes are hence
gated out.

Flat shoulders

Shoulders (inlets)

Vessel installations

Struts, such as e.g. a ladder often cause false
echoes. Note when planning a measurement
loop that the radar signals reach the measured
product without problems.

Struts

Struts such as vessel installations can cause
strong false echoes which can overlay the
useful echo. Small screens avoid a direct false
echo reflection. The false echoes are diffused
and filtered out by the measuring electronics
as "echo noise“.

Vessel installations

Struts

Correct

Wrong

Correct

Wrong

Ladder

Ladder

Screens

Correct

Wrong

Correct

Wrong

Screen

Screen

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Содержание VEGAPULS 56K

Страница 1: ...Level and Pressure Operating Instruction VEGAPULS 56K...

Страница 2: ...respon sibility Contents Safety information 2 Note Ex area 2 1 Product description 1 1 Function 4 1 2 Application features 6 1 3 Adjustment 7 1 4 Antennas 9 2 Types and versions 2 1 Type survey 10 2 2...

Страница 3: ...ipe 33 4 4 False echoes 40 4 5 Installation fault 42 5 Electrical connection 5 1 Connection and connection cable 44 5 2 Connection of the sensor 44 5 3 Connection of the external indicating instrument...

Страница 4: ...This initial position defines the development aims for a high temperature radar level meas uring system of VEGAPULS 56 series A special new development of high temperature radar sensors for level meas...

Страница 5: ...p to 1 second without using very time consuming frequency analysis e g FMCW necessary for other radar principles Virtually all products can be measured Radar signals physically react similar to visibl...

Страница 6: ...emens 3964R Profibus DP Profibus FMS ASCII adjustment from the DCS stage Ex approvals CENELEC FM CSA ABS LRS GL LR ATEX PTB Product description ductivity or with the dielectric constant of the medium...

Страница 7: ...is different hence each radar sensor must be given some basic information on the application and the environ ment The adjustment and parameter adjustment of the radar sensors are carried out with the...

Страница 8: ...0 mA HART Communicator Product description Adjustment with adjustment module MINICOM With the 3 2 cm x 6 7 cm 6 key adjustment module with display you can carry out the adjustment in clear text The ad...

Страница 9: ...running period of the radar sig nals changes in the pipe and depends on the pipe diameter The pipe inner diameter must be programmed in the electronics so that the running period can be compensated P...

Страница 10: ...na VEGAPULS 56 DN 50 pipe antenna General features level measurement on process and products under high temperatures and high pressures measuring range 0 20 m Ex approved in Zone 1 and Zone 10 IEC or...

Страница 11: ...psi 1 4571 1M2 Process connection ANSI 6 600 psi Hastelloy C22 YYY Other process connections and materials X without indication A with integral indication X without adjustment module MINICOM B with ad...

Страница 12: ...o logy 4 20 mA shown without signal condition ing instrument page 18 Measuring systems with VEGAPULS 56K Two wire technology loop powered supply and output signal via one two wire line Optionally exte...

Страница 13: ...T handheld VEGA CONNECT 2 Types and versions 1 If the resistors of the processing systems connected to the 4 20 mA signal output are less than 200 a resistor of 250 to 350 must be connected to the con...

Страница 14: ...VEGAPULS 56K Ex0 Max resistance of the signal line 15 per wire Optionally external indicating instrument with analogue and digital indication can be mounted up to 25 m separated from the sensor Adjus...

Страница 15: ...nal indicating instrument with analogue and digital indication can be mounted up to 25 m separated from the sensor in Ex area Adjustment with PC HART handheld or adjustment module MINICOM can be plugg...

Страница 16: ...an be plugged into the sensor or into the external indicating instrument HART handheld VEGA CONNECT 2 Types and versions 1 If the resistors of the processing systems connected to the 4 20 mA signal ou...

Страница 17: ...indicating instrument with analogue and digital indication can be mounted up to 25 m separated from the sensor in Ex area Adjustment with PC HART handheld or adjustment module MINICOM can be plugged...

Страница 18: ...0 Load max 500 Types and versions active 2 VEGADIS 50 1 If the resistors of the processing systems connected to the 4 20 mA signal output are less than 200 a resistor of 250 to 350 must be connected t...

Страница 19: ...ensor max 200 mW 1 2 VA Measuring range 1 Standard 0 20 m Measurement in a standpipe VEGAPULS 56 on DN 50 0 16 m VEGAPULS 56 on DN 100 0 19 m Output signal see also Outputs and processings 4 20 mA cur...

Страница 20: ...0 s four wire sensor 0 3 s Min span between full and empty adjustment 10 mm recommended 50 mm Beam angle at 3 dB with DN 80 38 only for standpipe measurement with DN 100 30 only for standpipe measure...

Страница 21: ...6 40 0 50 100 150 200 250 300 350 C 64 Flange DIN DN 50 Material 1 4571 groove and tongue acc to DIN 2512 form F N Flange DIN DN 80 Material 1 4571 seal surface acc to DIN 2526 form B C D E Flange DIN...

Страница 22: ...0 100 150 200 250 300 350 C PN 16 PN 25 PN 40 PN 64 bar 40 25 16 64 40 0 50 100 150 200 250 300 350 C Flange DIN DN 100 Material 1 4571 seal surface acc to DIN 2526 form B C D E Flange DIN DN 100 Mate...

Страница 23: ...25 16 40 0 50 100 150 200 250 300 350 C Flange DIN DN 200 Material 1 4571 seal surface acc to DIN 2526 form B C D E Flange DIN DN 250 Material 1 4571 groove and tongue acc to DIN 2512 form F N PN 16 P...

Страница 24: ...K Ex classification II 2 G EEx d ia IIC T6 Ex approved Zone 1 ATEX Zone 1 CENELEC PTB IEC VEGAPULS 56K Ex0 classification II 1 2 G EEx d ia IIC T6 Ex approved Zone 0 Zone 1 ATEX Zone 0 Zone 1 CENELEC...

Страница 25: ...usceptibility EN 50 082 1 1995 NSR EN 61 010 1 1993 Outputs and processings Display indication Indication optionally mounted scalable analogue and digital indication of measured values optionally exte...

Страница 26: ...20 1 8 160 76 75 200 1 8 125 18 20 165 18 23 DN 50 DN 80 DN 100 320 213 185 370 205 116 25 185 213 320 370 205 116 25 3 2 Dimensions Technical data Aluminium housing Aluminium housing with Exd termina...

Страница 27: ...VEGAPULS 56K 27 Technical data 22 205 146 285 DN 150 240 2 2 26 380 241 355 26 DN 250 405 24 296 197 295 22 DN 200 340...

Страница 28: ...module for insertion into the sen sors VEGAPULS 56 or into the external indicat ing instrument VEGADIS 50 Size Flange Seal ledge Holes D b k d1 No d2 2 150 psi 152 4 19 0 120 7 91 9 4 19 1 3 150 psi 1...

Страница 29: ...s Register of Shipping GL German Lloyd CSA Canadian Standards Association Technical data Ex area zone 0 zone 1 Series 50 sensors require for use in Ex areas special safety barriers or separators provi...

Страница 30: ...erence pane empty Profiles with smooth interfering surfaces cause large false signals Round profiles diffuse the radar signals A deflector causes signal scattering Mounting and installation False refl...

Страница 31: ...antenna in coni cal form similar to the beam pattern from a spotlight This emission cone angle depends on the antenna used Any object in this emission cone causes a reflection of the radar signal Wit...

Страница 32: ...n into the vessel isolation and isolate it up to approx to the first pipe segment 4 2 Measurement of liquids Sensor on DIN socket piece Most of the time the mounting of radar sensors is made on short...

Страница 33: ...mplified false echoes The radar sensor must be mounted outside the focus hence parabolic amplified echoes are avoided Sensor directly on the vessel top Mounting on dished end vessel 10 mm General inst...

Страница 34: ...he surge or bypass pipe the max measuring range is reduced by 5 20 e g DN 50 16 m in stead of 20 m and DN 100 only 19 m instead of 20 m Direct the sensor such that the hole is in one axis with the pip...

Страница 35: ...t cause measuring errors Surge pipe diameters of DN 50 to DN 150 can be con nected Standpipe measurement in inhomoge neous products Polarisation direction For reasons of radar signal polarisation the...

Страница 36: ...s in one axis with the row of holes Standpipe with ball valve When using a ball valve in a surge pipe it is possible to carry out maintenance and ser vice work without opening the vessel e g with liqu...

Страница 37: ...Pipe antenna systems must be provided with a vent at the upper end of a surge pipe A miss ing hole causes wrong measurements Wrong polarisation direction When measuring in a surge pipe especially when...

Страница 38: ...e as measur ing pipe a stainless steel pipe without joint Extend the measuring pipe to the required length with welding neck flanges or with con necting sleeves Note that no shoulders are caused in th...

Страница 39: ...ide of these sensors In agitated products fasten the measuring pipe to the vessel bottom Provide additional fastenings for longer measuring pipes With the deflector on the measuring pipe end the radar...

Страница 40: ...g for material mixing with flat surface pointing to the radar sensor should be covered by a screen False echoes are hence gated out Flat shoulders Shoulders inlets Vessel installations Struts such as...

Страница 41: ...roducts which can cause slight build up can be measured by using a measuring pipe with 100 mm nominal width and more In a measur ing pipe of this size slight build up is not a problem Build up If the...

Страница 42: ...mm out of the socket piece Wrong directing to the product surface A directing of the sensor which does not point to the product surface will cause weak meas uring signals If possible direct the senso...

Страница 43: ...here are also no interfering installa tions within the outer emission cone Note chapter 4 1 General installation instructions Emission cone and fault reflections Foam generation Strong dense and cream...

Страница 44: ...as must be noted e g DIN 0165 Connection cable Note that the connection cables must be speci fied for the expected operating conditions in your systems The cable must have an outer diam eter of 5 9 mm...

Страница 45: ...nication 4 20mA Display 1 2 C 5 6 7 8 4 3 ESC OK 1 2 C 5 6 7 8 4 3 L1 N Commu nication 4 20mA Display 1 2 C 5 6 7 8 4 3 4 20 mA passive 1 To the indicating instrument in the sensor cover or to the ex...

Страница 46: ...er on VEGADIS 50 You can facilitate the connection procedure by fastening the housing cover during connection with one or two screws on the right of the housing figure VEGADIS 50 ESC OK 1 2 C 5 6 7 8...

Страница 47: ...sensors can be adjusted with PC adjustment program VVO detachable adjustment module MINICOM or HART handheld The adjustment must only be carried out with one adjustment medium at the same time Adjustm...

Страница 48: ...arrow keys or the mouse the item Planning and click to OK You are asked for the identification Enter under the name VEGA Set up Also enter under the password VEGA The adjustment program VVO in the fo...

Страница 49: ...oad resistor then 250 350 do you use VEGACONNECT instead of the new VEGACONNECT 2 Configuration Choose the menu Configuration Measuring system to get further information on the sensor type the softwar...

Страница 50: ...t You can carry out the min max adjustment with medium or without medium Generally you will carry out the adjustment without medium When you want to carry out the adjustment with medium you have to ca...

Страница 51: ...tage filling of a vessel is generated The characteristics points however must not be at 0 and 100 the difference should be as high as possible e g at 20 and at 80 The min distance of the characteristi...

Страница 52: ...ing by confirming with OK The adjustments are now transmitted to the sensor Linearisation When in your vessel there is another depend ence between product distance and the value of the filling than a...

Страница 53: ...cs of the example you see four index markers or value pairs There is always a linear interpolation between the index markers Click to Show scaled values to have to ad justed meas unit displayed on the...

Страница 54: ...ed Quit the menu with OK You are again in the menu window Instrument data parameter adjustment Quit the menu window with OK Outputs Choose Instrument data parameter adjustment Choose in the menu windo...

Страница 55: ...Choose Volume percent when you want that the level of 45 1200 litres is indicated as percentage value of 0 100 Choose Distance when the actual dis tance to the product surface should be indicated in m...

Страница 56: ...the sensor are permanently saved you are again in the window Meas environment First click to Meas environment With the menu point Measuring range you can define the measuring range of the sensor devi...

Страница 57: ...ing to the product surface with a false echo having nearly the same size than the product echo In the following figure you see the echo curve after optimum directing to the product surface sensor axis...

Страница 58: ...menu Sensor optimisation to basic adjustment Quit the menu window Sensor optimisation with Quit You are now in the entrance menu window Instrument data parameter adjustment Click to the menu point Me...

Страница 59: ...0 m at 0 and 0 300 m at 100 the present signal current in the 4 20 mA signal line are displayed Simulation Click to the menu Diagnostics Simulation The menu window Display of measured value is opened...

Страница 60: ...transferred later to other sensors If you have e g a plant with several equal storage vessels and identical sensors it is sufficient to configurate one sensor save the adjustments and then transfer th...

Страница 61: ...ll detachable adjust ment module MINICOM The adjustment module is hence plugged into the sensor or into the external indicating instrument option ally For the adjustment with the adjustment module all...

Страница 62: ...sted with the appropriate menu points in the menu plan 1 Measurement in a standpipe only carry out when you measure in a standpipe 2 Operating range 3 Adjustment 4 Conditioning 5 Meas conditions 6 Fal...

Страница 63: ...or your parameter 100 0 at m d XX XXX Max adjustment OK Set up Ad just ment Pa ram eter adjust ment Sensor m d 4 700 without medium Adjust ment in m d 0 0 at m d XX XXX Min adjustment OK OK OK OK fill...

Страница 64: ...ance mean a good reliability 8 Outputs Under the menu Outputs you determine if e g the current output should be inverted or Set up corresponding to a 100 filling In the exam ple this would be 1200 for...

Страница 65: ...5 Set up which parameter should be provided by the sensor indication Failure indications E Hardware failure E013 No valid measured value in the inlet phase or loss of the useful echo E017 Adjustment s...

Страница 66: ...spl Fail ure mode 22mA Prop to Dis tance Curr out put 4 20mA w out medium adjust ment in m d with medium 0 0 at m d 5 000 100 0 at m d 0 300 Min adjust at 0 0 Max adjust at 100 0 Sca ling Lin curve Li...

Страница 67: ...numbers 1 to 5 are required The menus under the numbers 7 and 8 are only neces sary under arduous measurement conditions The menu under number 6 is only necessary for the measurement in a standpipe E...

Страница 68: ...handheld to the sensor signal line after you have connected the sensor to the power supply Note If the resistor of the power supply is less than 250 Ohm a resistor must be looped into the signal conne...

Страница 69: ...or via a resistor acc to the following table during the HART adjustment to reach together with the inner resistor of the instrument the value of 250 Ohm required for the HART instrument VEGA signal co...

Страница 70: ...70 VEGAPULS 56K Notes...

Страница 71: ...VEGAPULS 56K 71 Notes...

Страница 72: ...lding 505 Yardley PA 19067 7706 Tel 215 321 6012 Fax 215 321 6067 Tech Support Toll Free 866 DrLevel or 888 NIVELCO Email info DrLevel com or info hitechtech com Web Site www DrLevel com or www hitech...

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