Level and Pressure Operating Instructions VEGAPULS 42 and 44 4 … 20 mA; HART® compact sensor
Contents Contents Safety information ........................................................................ 3 Note Ex area ................................................................................ 3 Quick start Quick start with the PC ................................................................ 4 Quick start with adjustment module MINICOM ......................... 5 1 Product description 1.1 Function ................................................................................. 7 1.
Contents 5 Electrical connection 5.1 Connection and connection cable .................................... 53 5.2 Connection of the sensor .................................................. 54 5.3 Connection of the external indicating instrument VEGADIS 50 ....................................................................... 56 6 Setup 6.1 Adjustment methods .......................................................... 57 6.2 Adjustment with PC ............................................................
Quick start Quick start In the majority of applications, the radar sensor displays the distance to the product surface immediately after the power supply is switched on. You only have to carry out the empty and full adjustment so that at your required empty and full distances, 4 mA and 20 mA, respectively, are outputted.
Quick start Quick start with adjustment module MINICOM m 5,85 In the menu field you can move with these keys to the left, right, top and bottom. 1,27 ESC mA 4 20 OK Scaling of the measured value display • Click to "Instrument data/Parameter adjustment/Conditioning“. Empty adjustment Key Display text Sensor m(d) 4.700 OK • Click in the window "Conditioning“ to "Scaling“. OK The window … OK OK Parameter Adjustment w.out medium Adjustment in m(d) (Min. adjustment) opens.
Quick start + + Enter 0 %. Scaling of measured value display The 0 % value is allocated to the following distance and the distance indication flashes. Key OK or Enter the empty distance, e.g. 5.85 m. or – – Sensor m(d) 4.700 Parameter OK The value pair 0 % and 5.85 m is written into the sensor. OK Display text OK 0.0% Adjustment Conditioning at m (d) 5,85 Scaling OK Full adjustment 100.0% at m (d) XX.XXX + or 0% corres ponds XXXX – (Max.
Product description 1 Product description VEGAPULS series 40 sensors are a newly developed generation of extremely compact radar sensors for high resolution and accuracy. They are characterised by very good focussing features for applications in narrow spaces. With very modest space requirements, they were developed for measuring distances of 0 … 10 m/20 m and are the right choice for standard applications such as storage vessels, reservoirs and buffer tanks as well as process tanks.
Product description 1 ns 278 ns Pulse sequence VEGAPULS radar sensors can accomplish this through a special time transformation procedure which spreads out the more than 3.6 million echo images per second in a slowmotion picture, then freezes and processes them. The radar impulses are emitted by the antenna system as pulse packages with a pulse duration of 1 ns and pulse intervals of 278 ns; this corresponds to a pulse package frequency of 3.6 MHz.
Product description Continuous and reliable 1.2 Application features Unaffected by temperature, pressure and individual gas atmospheres, VEGAPULS radar sensors are used for quick and reliable continuous level measurement of various products. Applications • level measurement of liquids • measurement also in vacuum • all slightly conductive materials and all substances with a dielectric constant > 2.0 can be measured • measuring range 0 … 10 m (type 42). measuring range 0 … 20 m (type 44).
Product description 1.3 Adjustment Each measuring situation is unique. For that reason, every radar sensor needs some basic information on the application and the environment, e.g. which level means "empty“ and which level "full“. Beside this "empty and full adjustment“, many other settings and adjustments are possible with VEGAPULS radar sensors. The PC can be connected at any location in the system or on the signal cable.
Product description Tank 1 m (d) 12.345 2 2 - + ESC OK 2 PLC Tank 1 m (d) 12.345 4 ... 20 mA - + ESC OK 4 Adjustment with the PC on the 4 … 20 mA signal and supply cable or directly on the sensor (figure: a twowire sensor) Adjustment with detachable adjustment module. The adjustment module can be plugged into the radar sensor or the external indicating instrument VEGADIS 50. Adjustment with adjustment module MINICOM Adjustment with HART® handheld With the small (3.2 cm x 6.
Product description For adjustment, just connect the HART® handheld to the 4 … 20 mA output signal cable or insert the two communication cables of the HART® handheld into the adjustment jacks on the sensor. 2 4 ...20 mA 2 1.4 Antennas The antenna is the eye of the radar sensor. An uninitiated observer would probably not realise how carefully the antenna geometry must be adapted to the physical properties of electromagnetic fields.
Product description Pipe antennas VEGAPULS 42 on bypass tube The pipe antennas on surge or bypass tubes only form a complete antenna system in conjunction with a measuring tube (which can also be curved). The measuring tube acts as a conductor for radar signals. The running period of the radar signals changes in the tube and is dependent on tube diameter. The tube inner diameter must be programmed in the sensor so that it can take the altered running time into account and deliver precise level signals.
Types and versions 2 Types and versions Series 40 sensors are manufactured in two basic versions, VEGAPULS 42 and VEGAPULS 44. VEGAPULS 42 are characterised by a G 11/2 A or 11/2“ NPT thread as process fitting. These sensors are equipped as standard versions with a ø 40 mm horn as antenna. VEGAPULS 42 VEGAPULS 44 VEGAPULS 44 are characterised by a DIN or ANSI flanges as process fitting. In standard version they are manufactured with DN 50, 80, 100 and 150 as well as with ANSI 2“, 3“, 4“ and 6“.
Types and versions 2.1 Survey General features • Application preferably for liquids in storage tanks, reservoirs and process vessels with increased accuracy requirements. • Measuring range 0 … 10 m or 0 … 20 m. • Ex approved in zone 1 (IEC) or zone 1 (ATEX) classification EEx ia [ia] IIC T6. • Integrated display of measured values.
Types and versions Type code PS 42 .
Types and versions 2.2 Configuration of measuring systems A measuring system consists of a sensor with a 4 … 20 mA signal output and a module that evaluates and further processes the level-proportional current signal. On the following pages you will see various measuring systems, each consisting of a different instrument configuration (several also with signal conditioning).
Types and versions Measuring system with VEGAPULS 42 or 44 on active PLC • • • • Two-wire technology, supply by active PLC. Output signal 4 … 20 mA (passive). Measured value display integrated in the sensor. Optional external indicating instrument (can be mounted up to 25 m separated from the sensor in Ex area). • Adjustment with PC, HART® handheld or the adjustment module MINICOM (can be plugged into the sensor or into the external indication instrument).
Types and versions Measuring system with VEGAPULS 42 or 44 in four-wire technology • Four-wire technology, supply and output signal via two separate two-wire cables. • Output signal 4 … 20 mA active. • Optional external indicating instrument with analogue and digital display (can be mounted up to 25 m separated from the sensor). • Adjustment with PC, HART® handheld or adjustment module MINICOM (can be plugged into the sensor or into the external indicating instrument VEGADIS 50). • Max.
Types and versions Measuring system with VEGAPULS 42 or 44 via separator in Ex area on active PLC • Two-wire technology (loop powered), supply via the signal line of the PLC; output signal 4 … 20 mA (passive). • Separator transfers the non intrinsically safe PLC circuit to the intrinsically safe circuit, so that the sensor can be used in Ex zone 1 or Ex zone 0. • Optional external indicating instrument with analogue and digital display (can be mounted up to 25 m separated from the sensor).
Types and versions Measuring system with VEGAPULS 42 or 44 via separator (Smart-Transmitter) on passive PLC • Two-wire technology (loop powered), intrinsically safe ia supply via the signal cable of the separator for operation of the sensor in Ex zone 1 or Ex zone 0. • Output signal sensor 4 … 20 mA passive. Output signal separator 4 … 20 mA active. • Optional external indicating instrument with analogue and digital display (can be mounted up to 25 m separated from the sensor).
Types and versions Measuring system with VEGAPULS 42 or 44 on VEGADIS 371 Ex indicating instrument with current and relay output • Two-wire technology (loop powered), intrinsically safe ia supply via the signal cable of the VEGADIS 371 Ex indicating instrument for operation of the sensor in Ex zone 1 or Ex zone 0. • Optional external indicating instrument with analogue and digital display (can be mounted up to 25 m separated from the sensor).
Types and versions VEGAPULS 42 Ex or 44 Ex (loop powered) with pressure-tight encapsulated terminal compartment on active PLC • Two-wire technology, supply via the signal cable of active PLC on Exd connection housing for operation in Ex zone 1 (VEGAPULS …Ex) or Ex zone 0 (VEGAPULS …Ex0). • Output signal 4 … 20 mA (passive). • Measured value display integrated in the sensor. • Optional external indicating instrument (can be mounted up to 25 m separated from the sensor in Ex area).
Technical data VEGAPULS 42 Ex or 44 Ex with pressure-tight encapsulated connection compartment in four-wire technology • Four-wire technology, supply and output signal via two separate two-wire cables for use in Ex zone 1 (VEGAPULS …Ex) or Ex zone 0 (VEGAPULS …Ex0). • Output signal 4 … 20 mA (active). • Optional external indicating instrument with analogue and digital display (can be mounted up to 25 m separated from the sensor in Ex area).
Technical data 3 Technical data 3.1 Technical data Power supply Supply voltage - four-wire sensor 24 V DC (20 … 72 V DC) 230 V AC (20 … 250 V AC), 50/60 Hz fuse 0.2 A TR 24 V DC (14 … 36 V DC) 24 V DC (14 … 29 V DC) 24 V DC (20 … 36 V DC) - two-wire sensor - two-wire Ex ia sensor - two-wire Ex d ia sensor Current consumption - four-wire sensor - two-wire sensor Power consumption - four-wire sensor - two-wire sensor Load - four-wire sensor - two-wire sensor max. 60 mA max. 22.5 mA max. 200 mW, 1.
Technical data Measuring range 1) VEGAPULS 42 (ø 40 mm horn) - optional 0… ø 48 mm horn 0… ø 75, 95 mm horn 0… VEGAPULS 44 - DN 50, ANSI 2“ 0… - DN 80, 100, ANSI 3“, 4“, 6“ 0… Standpipe measurement in DN 50 standpipe - VEGAPULS 42 0… - VEGAPULS 44 0… Standpipe measurement in DN 100 standpipe - VEGAPULS 42 0… - VEGAPULS 44 0… 10 m 15 m 20 m 15 m 20 m 20 m 20 m 20 m 20 m Output signal 4 … 20 mA current signal Integration time Load - 4 … 20 mA two-wire Non Ex: Ex d ia: Ex ia: - 4 … 20 mA four-wire in two
Technical data Accuracy 2) (typical values under reference conditions, all statements relate to the nominal measuring range) Characteristics Deviation in characteristics including linearity, reproducibility and hysteresis (determined acc. to the limit point method) Linearity Average temperature coefficient of the zero signal Resolution in general Resolution of the output signal linear < 0.05 % better than 0.05 % 0.06 %/10 K max. 1 mm 0.
Technical data Ambient conditions Vessel pressure - VEGAPULS 42 -1 … 16 bar - VEGAPULS 44 -1 … 40 bar Ambient temperature on the housing -40°C … +80°C Process temperature (flange temperature)-40°C … +150°C Storage and transport temperature -60°C … +80°C Protection IP 66 and IP 67 Protection class - two-wire sensor II - four-wire sensor I Overvoltage category III Ex technical data For comprehensive data, see attached approval documents (yellow folder) Intrinsically safe version - classification ia intrinsica
Technical data Process fittings VEGAPULS 42 VEGAPULS 44 G 11/2 A, 11/2“ NPT screw-on antenna with ø 40 mm antenna horn (antenna horns of ø 48 … 95 mm can be retrofitted as option) DN 50, DN 80, DN 100, DN 150, ANSI 2“, 3“, 4“ and 6“ (horn antenna) Connection cable Two-wire sensors Four-wire sensor Cross-section area of conductor Ground connection Cable entry - ia terminal compartment - Exd terminal compartment supply and signal via one two-wire cable supply and signal separate generally 2.5 mm2 max.
Technical data 3.2 Approvals Intrinsically safe in Ex environment When using radar sensors in Ex areas or on ships, the instruments must be suitable and approved for the explosion zones and applications. The suitability is checked by the approval authorities and is certified in approval documents. Series 40 sensors in EEx ia (intrinsically safe) version require for use in Ex areas special separators or safety barriers. The separators or safety barriers provide intrinsically safe (ia) circuits.
Technical data 3.3 Dimensions External indicating instrument VEGADIS 50 82 38 85 118 108 135 10 48 ø5 Note: The cable diameter of the connection cable should be at least 5 mm and max. 9 mm. Otherwise the seal effect of the cable entry would not be ensured. Pg 13,5 Mounting on carrier rail 35 x 7.5 acc. to EN 50 022 or flat screwed Flange dimensions acc. to ANSI D b k d1 f outer flange diameter flange thickness diameter of hole circle seal ledge diameter seal ledge thickness 1 /16" = approx. 1.
Technical data Sensors Aluminium PBT Aluminium with Exd terminal compartment 201 165 215 185 10˚ 215 116 370 25 205 370 205 322 182 116 185 25 101 M20x1,5 M20x1,5 91 ½" NPT 199 19 ø 40 ø 40 219 139 253 307 100 ø 40 145 22 18 20 PBT: 53 Al: 78 ø 40 ø 48 ø 75 ø18 ˚ 45 8 ø1 ø125 ø 160 ø165 ø 200 DN 50 PN 16 Sensor type Version max.
319 319 ø 40 108 22 20 Technical data ø 95 ø 95 ø22 ø18 45 45 ˚ ˚ ø 180 ø 220 ø 240 ø 285 DN 100 PN 16 VEGAPULS 42 and 44 – 4 … 20 mA DN 150 PN 16 33
Mounting and installation 4 Mounting and installation 4.1 General installation instructions Measuring range The reference plane for the measuring range of the sensors is the flange face or the seal shoulder of the thread (VEGAPULS 42). For measurements in surge or bypass tubes (pipe antenna) the max. measuring distance is reduced.
Mounting and installation Emission cone and interfering reflections The radar signals are focused by the antenna system. The signals leave the antenna in a conical path similar to the beam pattern of a spotlight. The form and intensity of the emission cone depend on the antenna used. Any object in this beam cone causes a reflection of the radar signals. Within the first few meters of the beam cone, tubes, struts or other installations can interfere with the measurement.
Mounting and installation 4.2 Measurement of liquids 0m VEGAPULS 44 with ø 75 mm horn Horn antenna Horn antenna on DIN socket piece In most cases, the mounting of radar sensors is done on short DIN socket pieces. The lower side of the instrument flange is the reference plane for the measuring range. The antenna should always protrude out of the flange pipe. When the DIN socket piece is longer, please make sure that the horn antenna is not covered completely by the socket.
Mounting and installation On dished tank ends, please do not mount the instrument in the centre or close to the vessel wall, but approx. 1/2 vessel radius from the centre or from the vessel wall. Dished tank ends can act as paraboloidal reflectors. If the radar sensor is placed in the focal point of the parabolic tank, the radar sensor receives amplified false echoes. The radar sensor should be mounted outside the focal point. Parabolically amplified echoes can be thereby avoided.
Mounting and installation Screw-on antenna directly in vessel opening As an alternative to socket mounting, the screw-on antenna can be mounted in round vessel openings (holes). 4.3 Measurement in standpipe (surge or bypass tube) General instructions Pipe antennas are preferred in vessels which contain many installations, e.g. heating tubes, heat exchangers or fast-running stirrers. Measurement is then possible where the product surface is very turbulent, and vessel installations cannot cause false echoes.
Mounting and installation Make sure the required upper vent hole in the surge pipe is aligned with the sensor type label. As an alternative to a surge pipe in the vessel, a pipe antenna system outside the vessel in a bypass tube is also possible. The surge and bypass tubes must generally be made of metal. For plastic tubes, a closed, conductive jacket is always required. For metal tubes with plastic inner coating, make sure that the thickness of the coating is minimal (approx. 2 … 4 mm).
Mounting and installation With a liquid quantity of 300 … 800 mm in the blind lower end of the tube, the portion of the signal that penetrates the liquid and reflects from the tube bottom is sufficiently damped the sensor can then easily distinguish it from the echo of the liquid surface. If not enough liquid remains, a deflection plate located at the bottom of a vertical pipe can provide the same function. It deflects the signal reflected from the tube end sideways into the standard tube opening.
Mounting and installation Use of conducting tubes In case of very rough inner surfaces in existing bypass tubes (e.g. due to corrosion), or very large bypass openings, the use of a conducting tube inside the existing bypass tube is recommended. This reduces the noise level and increases reliability considerably. The flange of the conducting tube can be easily mounted as a sandwich flange between vessel and sensor flange.
Mounting and installation Standpipe measurement of inhomogeneous products Adhesive products For nonadhesive or slightly adhesive products, choose a surge pipe with a nominal width of e.g. 50 mm. VEGAPULS 42 and 44 radar sensors with 24 GHz technology are relatively insensitive to buildup in the tube. Nevertheless, buildup must not be allowed to plug up the tube completely. If you want to measure inhomogeneous products or stratified products in a surge pipe, it must have holes, elongated holes or slots.
Mounting and installation The more inhomogeneous the measured product, the closer the openings should be spaced. Due to radar signal polarisation, the holes or slots must be positioned in two rows offset by 180°. Surge pipe with ball valve If a ball valve is mounted in the surge pipe, maintenance and servicing can be carried out without opening the vessel (e.g. if it contains liquid gas or toxic products).
Mounting and installation Guidelines for standpipe construction VEGAPULS 42 G 11/2 A screwed antenna Radar sensors for measurement on surge or bypass pipes are routinely mounted in flange sizes DN 50, DN 80, DN 100 and DN 150. The radar sensor with a DN 50 flange forms a functional measuring system only in conjunction with a measuring pipe. The illustration on the left shows the constructional features of a measuring pipe (surge or bypass tube) as exemplified by a sensor with DN 50 flange.
Mounting and installation VEGAPULS 44 Flange DN 100 Welding of the plain welded flange Deburr the holes 100 % Welding of the connecting sleeves 5…10 ø 95 Connecting sleeve Welding neck flanges When measuring products with lower dielectric values (< 4), a part of the radar signal penetrates the medium. If the vessel is nearly empty, an echo is generated by the medium and the vessel bottom. In some cases, the vessel bottom generates a stronger signal echo than the product surface.
Mounting and installation Examples of flange and pipe dimensions The following shows a few examples of flanges and stainless steel pipes. Plain welded flanges ND 6 D1 D1 d2 Tube NW D1 d5 D 80 88.9 90.2 200 100 108 114.3 109.6 115.9 150 159 168.3 161.1 170.5 46 d5 Flange b e b k D 45˚ e d5 b d2 k D d2 Weight kg M16 18 3.79 8 M16 18 4.20 4.03 8 M20 22 6.72 6.57 e k No.
Mounting and installation Welding neck flanges ND 16 r h1 D2 H2 D1 s D3 f b D4 k D Tube Flange Neck Screws NW D1 D b k h1 D3 s r H2 D4 f No. Thread D2 50 57 60.3 165 18 125 45 72 75 2.9 6 8 102 3 4 M16 18 80 88.9 200 20 160 50 105 3.2 8 10 138 3 8 M16 18 100 108 114.3 220 20 180 52 125 131 3.6 8 12 158 3 8 M16 18 150 159 168.3 285 22 240 55 175 184 4.
Mounting and installation 4.4 False echoes Vessel installations The installation location of the radar sensor must be selected such that no installations or inflowing material cross the radar impulses. The following examples and instructions show the most frequent measuring problems and how to avoid them. Vessel installations such as, for example, a ladder, often cause false echoes. Make sure when planning your measuring location that the radar signals have free access to the measured product.
Mounting and installation Inflowing material Do not mount the instrument in or above the filling stream. Ensure that you detect the product surface and not the inflowing material. Wrong Correct Strong product movements Strong turbulences in the vessel, e.g. caused by stirrers or intense chemical reactions, can seriously interfere with the measurement.
Mounting and installation 4.5 Common installation mistakes Parabolic effects on dished or arched vessel tops Socket piece too long If the sensor is mounted in a socket extension that is too long, false reflections are caused, and measurement is hindered. Make sure that the horn antenna protrudes out of the socket piece. Correct Round or parabolic tank tops act like a parabolic mirror on the radar signals.
Mounting and installation Wrong orientation to the product Foam generation Weak measuring signals are caused if the sensor is not directly pointed at the product surface. Orient the sensor axis perpendicularly to the product surface to achieve optimum measuring results. Conductive foam is penetrated by the radar signals to different depths and generates a number of single (bubble) echoes. The signals in the foam are also damped, like heat radiation that tries to penetrate styrofoam.
Mounting and installation Installation mistakes in the standpipe Pipe antenna without ventilation hole Pipe antenna systems must be provided with a ventilation hole on the upper end of the surge pipe. A missing hole will cause false measurements. Correct Wrong Wrong polarisation direction When measuring in a surge pipe, especially if there are holes or slots for mixing in the tube, it is important that the radar sensor is aligned with the rows of holes.
Electrical connection 5 Electrical connection 5.1 Connection and connection cable Safety information As a rule, do all connecting work in the complete absence of line voltage. Always switch off the power supply before you carry out connecting work on the radar sensors. Protect yourself and the instruments, especially when using sensors which do not operate on low voltage.
Electrical connection 5.2 Connection of the sensor After mounting the sensor at the measurement location according to the instructions in chapter "4 Mounting and installation“, loosen the closing screw on top of the sensor. The sensor lid with the optional indication display can then be opened. Unscrew the sleeve nut and slip it over the connection cable (after removing about 10 cm of insulation). The sleeve nut of the cable entry has a self-locking ratchet that prevents it from opening on its own.
Electrical connection Version with aluminium housing Two-wire technology (loop powered) Four-wire technology 4 … 20 mA active 2) + 4 … 20 mA passive 1) To the indicating instrument in the + sensor lid or to the external indicating instrument VEGADIS 50 M20 x 1.5 (diameter of the connection cable 5…9 mm) 1 2 C 3 4 5 6 7 8 1 2 C 3 4 5 6 7 8 (+) (-) L1 N Communication - +4...
Electrical connection 5.3 Connection of the external indicating instrument VEGADIS 50 Loosen the four screws of the housing lid on VEGADIS 50. The connection procedure can be facilitated by attaching the housing cover during connection work with one or two screws on the right side of the housing. VEGADIS 50 Adjustment module + - Tank 1 m (d) 12.
Setup 6 Setup 6.1 Adjustment methods 6.2 Adjustment with PC The radar sensors can be adjusted with - PC (adjustment program VVO) - with detachable adjustment module MINICOM - with HART® handheld. The adjustment must be carried out with only one adjustment device. If, for example, you try the parameter adjustment with the MINICOM and the HART® handheld, the adjustment will not work. PC on the sensor For connection of the PC to the sensor, the interface converter VEGACONNECT 2 is required.
Setup + PLC Ri ³ 250 W + 250 W PLC Ri < 250 W Rx VEGAMET/VEGALOG 58 VEGAPULS 42 and 44 – 4 … 20 mA
Setup Adjustment with the PC In chapter "2.2 Configuration of measuring systems“, connection of the PC to different measuring systems is shown. The PC with the adjustment program VVO version ³2.60 (VEGA Visual Operating) can be connected to the - sensor - signal cable. Note: Please note that for adjustment of VEGAPULS 42 and 44 sensors, the adjustment program VVO version 2.60 or higher is required.
Setup You have already connected the PC with the adjustment software VVO to your measuring system. • Now switch on the power supply of the connected sensor. In the first 10 … 15 seconds the sensor starts to draw a current of approx. 22 mA (self-test) and immediately after, a level-proportional, i.e., distance-proportional current of 4 … 20 mA. • Switch on the PC and start the adjustment software VVO. … and indicates after a few seconds if and with which sensor a connection exists.
Setup Configuration Configuration info • Now enter in this menu whether a level, a distance or a gauge should be measured and click to "OK “. Parameter adjustment 1 Meas. loop data • Choose the menu "Configuration/Measurement loop“, to get further information on the sensor type, the software version of the sensor, the measuring unit, the measurement loop designation etc. • Click to "Quit“. • Click to the menu item "Instrument Parameter adjustment“.
Setup In the window “Measurement loop data”, all sensor data are displayed. • Click to "Min/Max-Adjustment“. Adjustment • Now choose the menu "Parameter ment“. adjust- 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 carry out the min. adjustment with emptied vessel and the max. adjustment with filled vessel.
Setup It is convenient and quick to carry out the adjustment without medium, as shown in the example. • Choose if you want to carry out the adjustment in meters (m) or in feet (ft). • Enter a distance for the upper and lower level and the extent of filling in % corresponding to each distance. In the example, the 0 % filling is at a product distance of 5.850 m and the 100 % filling at a product distance of 1.270 m. • Click in the menu "Adjustment“ to "Quit“. • Confirm with "OK“.
Setup In the menu "Scaling“, you allocate a unit of measurement and a numerical value to the 0 % and the 100 % values of the physical quantity. You thereby inform the sensor, e.g. that at 0 % filling there are still 45 liters and at 100 % filling 1200 liters in the vessel. The sensor display then shows with empty vessel (0 %) 45 liters and with full vessel (100 %) 1200 liters. Sensor optimisation In the menu "Sensor optimisation" you adapt the sensor to the specific meas. environment. Meas.
Setup With the menu item "Operating range“, you can define the operating range of the sensor deviating from the "Min/Max adjustment“. By default, the operating range corresponds otherwise to the min./max. adjustment, i.e. the span. After a few seconds during which the adjustments are permanently saved in the sensor, you are again in the window "Meas. environment“. Meas. conditions/Pulse velocity Generally, it is better to choose the operating range approx.
Setup • If you want to make no adjustments, quit this menu with "Quit“. • With "OK“ you save the adjustments made. • Click in the menu window „Meas. environment“ to "Quit“. You are again in the menu window „Sensor optimisation“. In the next illustration, you see the echo curve after optimum directing of the sensor to the product surface (sensor axis perpendicular to the product surface). The false echo, e.g. caused by a strut, is now reduced by more than 10 dB and will no longer influence the measurement.
Setup • Click in the menu window "Sensor optimisation“ to the menu item "False echo storage. • Now click in the opening menu window "False echo storage“ to "Learn false echoes. The small window "Learn false echoes“ opens. • Enter here the verified product distance and click to "Create new. The echo curve and the false echo marking are shown. • Quit the menu with "Quit . You are again in the menu window "Sensor optimisation“.
Setup User programmable linearisation curves • Click to "User programmable curve“ to enter your own vessel geometry or a user programmable filling curve. 0m • Click to "Edit“. 100 % at 1,27 m 1,463 m (95,79 %) Span 4,58 m (100 %) 4,387 m (95,79 %) The user-programmable linearisation curve is generated by index markers. Each index marker consists of a value pair. A value pair is composed of a value "Linearised“ and a value "Percentage value“. “Percentage value” represents the percentage value of level.
Setup Calculating the linearisation curve (use previous tank example) In the menu window "Linearisation -- user programmable curve --“ you can start the vessel calculation program. With the vessel calculation program you can calculate (using dimensions from the technical drawings of the vessel) the correlation of filling height to filling volume. If the curve is defined this way, gauging by incremental filling is not necessary - your sensor can then output volume as a function of level.
Setup • Click to "individual tank form and choose three round tank segments with the dimensions 0.88 m • 0.9 m (height by diameter), 0.66 m • 0.47 m and 0.66 m • 1.12 m (this tank form corresponds to the tank form of the gauging example). You are again in the menu window "Tank calculation“. • Click to „OK “ to save the tank calculation. • Click to "Calculate“. After a short calculation time, the levels as a percentage of span and the corresponding volume percentages are shown.
Setup The entering of a wall thickness is only necessary for the calculation of the dished boiler end as its mathematical calculation is based on the outer dimension. The calculation program calculates by means of the vessel inner dimensions the vessel volume. Above the information "All dimensions are internal dimensions“, you will find two fields with the percentage values 0 % and 100 %. Here you can shift the 100 % line or the 0 % line.
Setup In the menu "Scaling“ (Instrument data/Conditioning/Scaling) you entered earlier that at 0 % filling there are 45 liters in the tank and at 100 % filling 1200 liters. The geometry of the calculated cylindrical tank was accordingly scaled down to a size that indeed evaluates to a volume of only 1200 liters. The modified linearisation curve was then applied to the volume data that you entered in the menu "Scaling“. There is a linear interpolation between the linearisation points.
Setup • Quit the menu with "OK“. • Confirm with "OK“ and your individual linearisation curve is saved in the sensor. Again in the menu window "Conditioning“, you can enter with the menu item "Integration time“ a measured value integration. This is recommended for agitated product surfaces, to prevent rapid fluctuation of the output signal and the measured value indication. The standard setting is an integration time of 0 seconds. • Quit the menu with "OK“.
Setup Parameter adjustment sensor display Interface parameter adjustment and • Click in the menu window "Outputs“ to the menu item "Display of measured value“. Display of measured value See manual "VEGA Visual Operating“. Simulation • Click to the menu "Diagnostics/Simulation“. The menu window "Sensor-Display“ opens. Here you can once again adjust the sensor display. • Choose "Scaled“, if the display should show your previous adjustments. In the example a level of 45 … 1200 liters would be displayed.
Setup The grey scroll bar becomes active. With this scroll bar you can change the measured value to any value in the range of -10 % … 110 % and thereby simulate the filling or emptying of the vessel. In the input box of the turquoise window cutout you can enter any percentage value of filling. Note on the simulation mode: One hour after the last simulation adjustment, the sensor automatically returns to standard operating mode. The display of measured value flashes during simulation. 6.
Setup Error codes: E013 No valid measured value - Sensor in the warm-up phase - Loss of the useful echo E017 Adjustment span too small E036 Sensor program not operating - Sensor must be reprogrammed (service) - Fault signal also appears during programming E040 Hardware failure, electronics defective 2. Operating range Without special adjustment, the operating range corresponds to the measuring range. Generally, it is useful to choose a slightly wider range (approx.
Setup Adjustment without medium (adjustment independent of the level) Key + or Display indication Sensor m(d) 4.700 OK Parameter OK w.o medium OK (min. adjustment) + The distance indication flashes and you can choose "feet“ and "m“. OK Confirm the adjustment with "OK“. Adjustment in m(d) + or OK – 0.0% at m (d) XX.XXX With "+“ and "–“ you adjust the percentage value for the min. value (example 0.0 %). The adjusted percentage value is written in the sensor and the distance of the min.
Setup • Confirm with "OK“. Adjustment with medium with medium Min. adjust at % XXX.X If necessary, choose a decimal point. However, note that only max. 4 digits can be displayed. In the menu "prop. to“ you choose the physical quantity (mass, volume, distance…) and in the menu "Unit“ the physical unit (kg, l, ft3, gal, m3 …). Max. adjust at % XXX.X Fill the vessel e.g. to 10 % and enter 10 % in the menu "Min. adjust“ with the "+“ and "–“ keys. Then fill the vessel, e.g.
Setup 7. Signal-Noise divergence In the menu Ampl.: XX dB S-N: XX dB you get important information on the signal quality of the product echo. The higher the "S-N“ value, the more reliable the measurement (menu schematic MINICOM). Ampl.: S-N: means amplitude of the level echo in dB (useful level) means Signal-Noise, i.e.
Setup Menu schematic for the adjustment module MINICOM Sensor PULS 44 K 2.00 m(d) 4.700 Parameter Multidrop operation (HART ® sensor address): • Sensor address zero: The sensor outputs beside the 4…20 mA signal also a digital (HART®) level signal. • Sensor address 1…15: the sensor delivers only a digital (HART ® ) level signal. The sensor current is frozen to 4 mA (power supply). When switching on, the sensor type and the software version are displayed for a few seconds.
Setup With these keys you move in the menu field to the left, right, top and bottom ESC OK Add’l functions Info 6. 7. False echo memory Act. dist. m (d) 4.700 Ampl.: XX dB S-N: XX dB Create new Update Delete Meas. dist. m (d) X.XX Meas. dist. m (d) X.XX Delete Now! OK? Update Now! OK? Update Now! OK? Deleting! Learning! Learning! Language English Basic reset Reset Now! OK? Reset ing! Sensor Tag Sensor Sensor Serial type number PULS54 1094 K 0213 Softw. vers. 2.00 max.
Setup 6.4 Adjustment with HART® handheld With any HART® handheld you can set up the VEGAPULS 40K radar sensors like all other HART® compatible sensors. A special DDD (Data Device Description) is not necessary. Just connect the HART® handheld to the signal cable, after connecting the sensor to power supply. + Ri ³ 250 W Note: If the resistance of the power supply is less than 250 Ohm, a resistor must be connected into the signal/connection loop during adjustment.
Setup Rx VEGAMET VEGALOG The most important adjustment steps On the following pages you see a menu schematic for the HART® handheld in conjunction with VEGAPULS 42 and 44 sensors. The most important adjustment steps are marked in the menu schematic with the letters A … E. For parameter adjustment, first press the key "ENTER“. The adjustment is thereby saved in the handheld, but not in the sensor itself. Generic: SENSOR PV URV 5.850 m 1.270 m HELP DEL ESC ENTER 4.2 (5.
Setup HART® menu schematic VEGAPULS 42 and 44 Switch on: 1.1 Generic: SENSOR Process variables 1 Snsr 2.281 m 2 AI % rnge 69,140 % 3 AO 1 15.059 mA Hart Communicator Self Test in Progress Firmware Rev: F2.2 Module Rev: 3.6 01992-96 FRSI after approx. 20 s 1 Generic: SENSOR Device setup 1 Process variables 2 Diag/Service 3 Basic setup 4 Detailed setup 5 Review SAVE HOME HELP SAVE HOME 1.
Setup 1.1.2 Generic: SENSOR PV 2.281 m Generic: SENSOR PV % rnge 45.390 % 1.1.3 HELP HELP EXIT 1.2.2 Generic: SENSOR Choose analog output level 1 4mA 2 20mA 3 Other 4 End ABORT ENTER Switch off control E Generic: SENSOR A01 8.264 mA EXIT 1.3.1 Generic: SENSOR Tag SENSOR SENSOR HELP C DEL EXIT Individual current values for test purposes (measured value simulation). See also menu window 1.4.3.1. on the next page The following menu windows are not supported by the sensor.
Setup Continuation HART® menu schematic VEGAPULS 42 and 44 False echo storage Normally this menu is only required for process vessels and difficult installation conditions D 1.3.4.8 Generic: SENSOR Message ..SOL of 1.3.4 initialisation word (last entered) ..FEN04.58M HELP DEL Newly entered initialisation word to be enquired with ENTER and SEND ESC ENTER available initialisation words: ..SOL ..LIQ ..FED Meas. conditions solid Meas. condition liquid Delete false echo storage ..FEN04.
Diagnostics 7 Diagnostics 7.1 Simulation For simulation of a certain filling, you can call up the function “Simulation” in the adjustment module MINICOM, in the software program VVO or in the HART® handheld. You simulate a vessel filling level and thereby a certain sensor current. Please note that connected instruments, such as e.g. a PLC react according to their adjustments and will probably activate alarms or system functions.
VEGA Grieshaber KG Am Hohenstein 113 D-77761 Schiltach Phone (0 78 36) 50 - 0 Fax (0 78 36) 50 - 201 e-mail info@vega-g.de internet www.vega-g.de ISO 9001 The statements on types, application, use and operating conditions of the sensors and processing systems correspond to the latest information at the time of printing. Technical data subject to alterations 2.
