VEGAFLEX 82, 86
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Product information Guided Wave Radar Level measurement in bulk solids VEGAFLEX 82 VEGAFLEX 86

Please note the Ex specific safety information that you can find at www.vega.com and that comes with each instrument. In hazardous areas you should take note of the appropriate regulations, conformity and type approval certificates of the sensors and power supply units. The sensors must only be operated on intrinsically safe circuits. The permissible electrical values are stated in the certificate. Guided Wave Radar - Level measurement in bulk solids Take note of safety instructions for Ex appli

Measuring principle 1 Measuring principle Measuring principle High frequency microwave pulses are coupled onto a cable or rod and guided along the probe. The pulse is reflected by the product surface. The time from emission to reception of the signals is proportional to the distance of the level. The instrument is supplied with the probe length (0 % and 100 %) already adjusted. In most cases setup on site is not required. In any case, you set up VEGAFLEX without medium. The shortenable cable and rod versions can be simply adapted to the local requirements, if necessary. Applications in bulk...

Type overview 2 Type overview VEGAFLEX 82 Cable version High storage silos, silos with product movement Storage silos Cable probe Process temperature Process pressure Signal output 4 … 20 mA/HART - two-wire 4 … 20 mA/HART - four-wire Profibus PA Foundation Fieldbus Modbus and Levelmaster protocol PLICSCOM PACTware VEGADIS 62 VEG

Type overview Cable version High temperature applications High temperature applications Cable probe Process fitting/Material Process temperature Process pressure Signal output 4 … 20 mA/HART - two-wire 4 … 20 mA/HART - four-wire Profibus PA Foundation Fieldbus Modbus and Levelmaster protocol PLICSCOM PACTware VEGADIS 62 VEGADIS 81 ATEX IEC Shipbuilding FM C

Instrument selection 3 Instrument selection Application areas VEGAFLEX 82 VEGAFLEX 82 allows maintenance-free measurement of light and heavy bulk solids. Even in applications with strong dust generation, condensation or buildup, the sensor delivers precise and reliable measured values. Automatic probe end tracking enables measurement of virtually any kind of bulk solid material. VEGAFLEX 86 is especially suitable for high-temperature applications in all kinds of bulk solids. Even in applications with strong dust generation, condensation or buildup the sensor delivers precise and reliable...

Instrument selection Fig. 9: Socket must be installed flush 1 2 Unfavourable installation Socket flush - optimum installation Plastic vessel The guided microwave principle requires a metallic surface on the process fitting. Therefore, in plastic vessels, etc., use an instrument version with flange (from DN 50) or place a metal sheet (ø > 200 mm/8 in) beneath the process fitting when screwing it in. Fig. 11: Installation in concrete silo Fig. 10: Installation in plastic silo 1 Flange 2 Metal plate Concrete vessel When installed in thick concrete ceilings, VEGAFLEX should be mounted front...

Selection criteria 4 Selection criteria VEGAFLEX 82 Abrasive bulk solids Strong extraction forces Tangential filling Process fittings Threaded fittings Flange connections Power generation Metal production Environment and recycling industry Paper Shipbuilding

Housing overview 5 Housing overview Plastic PBT Protection rating Single chamber Double chamber Application area Industrial environment Industrial environment Aluminium Protection rating Version Single chamber Double chamber Application area Industrial environment with increased mechanical stress Industrial environment with increased mechanical stress Single chamber, electropolished Single chamber, precision casting Double chamber, precision casting Application area Aggressive environment, food processing, pharmaceutical Aggressive environment, extreme mechanical stress Aggressive...

6 Mounting Mounting examples The following illustrations show mounting examples and measurement setups. Foodstuffs and animal feed Fig. 20: Level measurement of plastic granules with VEGAFLEX 82 Fig. 19: Level measurement in a grain silo with VEGAFLEX 82 Cereals, sugar, flour, coffee, cornflakes, cacao, instant powder, animal feed - bulk solid levels have to be measured everywhere in the food industry. The guided microwave principle works independently of product characteristics such as moisture, intense dust or noise generation and the shape of the material cone. Many finished products in...

Building materials Fig. 21: Level measurement in a storage vessel with VEGAFLEX 82 In the building industry, different additives are stored in single or multiple chamber silos - e.g. cement, sand, filler with varying properties such as moisture content, grain size, material cone shape and flow behavior. The guided microwave is ideal for level measurement in vessels containing bulk solids. Due to the physical measuring principle, adjustment with medium is no longer necessary. The sensor only has to be electrically connected. The measuring result is influenced neither by fluctuating product...

Electronics - 4 … 20 mA/HART - two-wire 7 Electronics - 4 … 20 mA/HART - two-wire Configuration of the electronics The plug-in electronics is mounted in the electronics compartment of the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against vibration and moisture. Connection Single chamber housing The terminals for voltage supply as well as the contact pins with I²C interface for parameter adjustment are located on the upper side of the electronics. In the double-chamber housing, the terminals are located in...

Electronics - 4 … 20 mA/HART - four-wire 8 Electronics - 4 … 20 mA/HART - four-wire Configuration of the electronics The plug-in electronics is mounted in the electronics compartment of the instrument and can be exchanged by the user when servicing is required. The electronics is completely encapsulated to protect against vibration and moisture. The contact pins with I²C interface for parameter adjustment are located on the upper side of the electronics. The terminals for the power supply are located in the separate connection compartment. Voltage supply If a reliable separation is...