Radar,Level measurement in bulk solids
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Product information Radar Level measurement in bulk solids VEGAPULS 67 VEGAPULS SR 68 VEGAPULS 68 VEGAPULS 69

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. Take note of safety instructions for Ex appli

Measuring principle 1 Measuring principle Measuring principle VEGAPULS 67, SR 68, 68 Extremely short microwave pulses are emitted by the antenna system in the direction of the measured product, reflected by the product surface and received back again by the antenna system. They propagate at the speed of light. The time from emission to reception of the signals is proportional to the level in the vessel. A special time stretching procedure allows reliable and precise measurement of the extremely short times. The VEGAPULS 67, SR 68, 68 radar sensors work with low emitted power in the K-band...

Type overview 2 Type overview VEGAPULS 67 Bulk solids Bulk solids under extremely difficult process conditions Bulk solids under extremely difficult process conditions Completely encapsulated plastic horn an- Horn or parabolic antenna/316L tenna/PP Process fitting/Material Thread G1½/316L according to DIN 3852- Thread G1½/316L according to DIN 3852A or flange/316L A or flange/316L Process temperature Process pressure Frequency range Signal output 4 … 20 mA/HART - two-wire 4 … 20 mA/HART - four-wire Profibus PA Foundation Fieldbus Modbus, Levelmaster protocol PLICSCOM PACTware VEGADIS 81...

Type overview Bulk solids under extremely difficult process conditions Horn antenna/PP/PTFE, lens antenna/ PEEK, integrated horn antenna/PEEK Process fitting/Material Mounting strap/316L, flange/PP, flange/316L, thread 316L or Alloy C 22 Process temperature Process pressure Frequency range Signal output 4 … 20 mA/HART - two-wire 4 … 20 mA/HART - four-wire Profibus PA Foundation Fieldbus Modbus, Levelmaster protocol PLICSCOM PACTware VEGADIS 81 VEGADIS 82 ATEX IEC FM

Instrument selection 3 Instrument selection Application areas VEGAPULS 67 The VEGAPULS 67 is a sensor for continuous level measurement of bulk solids under simple process conditions. It is suitable for smaller silos and vessels. The VEGAPULS 67 is an economical solution through its versatile and simple mounting options. The encapsulated antenna system ensures maintenance-free permanent operation even with strong contamination. The VEGAPULS SR 68 is a sensor for continuous measurement of bulk solids even under difficult process conditions. It is particularly suitable for level measurement in...

Selection criteria 4 Selection criteria VEGAPULS 67 Simple process conditions Threaded fittings Mounting strap Swivelling holder Plastic horn antenna Metal horn antenna Metal encapsulated lens antenna Parabolic antenna Aggregates and mining industry Power generation Metal production Environment and recycling industry Cement industry Flange connections Suitability for industry-specific applications

Housing overview 5 Housing overview Plastic PBT Protection rating Single chamber Double chamber Application area Industrial environment Industrial environment Protection rating Single chamber Double chamber Application area Industrial environment with increased mechanical stress Industrial environment with increased mechanical stress Protection rating 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. Plastic granules non-contact measurement with ultrasonics is virtually impossible. The VEGAPULS SR 68 is the ideal solution since microwaves are unaffected by dust generation and the filling stream. The VEGAPULS SR 68 radar sensor is the ideal measuring instrument for this application. With a swivelling holder it can be optimally aligned to the product surface. Clinker silo Fig. 18: Level measurement in a clinker silo with VEGAPULS 68 Fig. 16: Level measurement in a plastic granules silo...

Cement silo Fig. 19: Level measurement in a cement silo with VEGAPULS 69 Cement is stored in high and very slender silos. The abrasive properties as well as the extreme dust generation during filling make high demand on the level measurement. The VEGAPULS 69 sensor is the optimum solution for level measurement. The high emitting frequency and its antenna powerfully focus the microwaves, thus generating a strong useful signal. Interference from struts or installations is excluded.

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...