Operating Instructions - VEGAPULS 54K enamel

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1 Product description VEGAPULS series 50 sensors are a newly developed generation of extremely compact, small radar sensors. Due to their small housing dimensions and process fittings, the compact sensors are an unobstrusive, and most of all, very costeffective solution for your level measurement applications. With their integrated display and many of the features of the VEGAPULS 81 series, they bring the advantages of radar level measurement to applications where previously, due to high costs, the advantages of non-contact measurement had to be forgone. The VEGAPULS 54 radar sensor is perfectly suitable for two-wire technology, however, it is also available in four-wire technology where the output signal and power supply are carried on in two separate circuits. The supply voltage and the output signal are transmitted via one two-wire cable. The instruments produce an analogue 4 … 20 mA output signal as output, i.e. measuring signal. In the enamelled version, the sensors have exceptional chemical resistance, and represent the ideal level sensor technology for corrosive processes. Radio detecting and ranging: Radar. VEGAPULS radar sensors are used for noncontact, continuous distance measurement. The measured distance corresponds to a filling height and is outputted as level. 1.1 Function Measuring principle: Product description emission – reflection – reception Extremely small 5.8 GHz radar signals are emitted from the antenna of the radar sensor as short pulses. The radar pulses reflected by the sensor environment and the product are received by the antenna as radar echoes. The running period of the radar pulses from emission to reception is proportional to the distance and hence to the level. emission - reflection - reception Meas. distance The radar pulses are emitted by the antenna system as pulse packets with a pulse duration of 1 ns and pulse intervals of 278 ns; this corresponds to a pulse package frequency of 3.6 MHz. In the pulse intervals, the antenna system operates as a receiver. Signal running periods of less than one billionth of a second must be processed and the echo image evaluated in a fraction of a second. 4 VEGAPULS 54K enamel 24 101-EN-041227
24 101-EN-041227 Product description Puls 1 ns Pulse sequence Time transformation Pulse break 278 ns VEGAPULS can achieve this through a special time transformation procedure which spreads out the more than 3.6 million echo images per second in a slow-motion picture, then freezes and processes them. t t Hence, it is possible for the VEGAPULS 50 radar sensors to process the slow-motion pictures of the sensor environment precisely and in detail in cycles of 0.5 to 1 second without using time-consuming frequency analysis (e.g. FMCW, required by other radar techniques). Nearly all products can be measured Radar signals display physical properties similar to those of visible light. According to the quantum theory, they propagate through empty space. Hence, they are not dependent on a conductive medium (air), and they spread out like light at the speed of light. Radar signals react to two basic electrical properties: - the electrical conductivity of a substance - the dielectric constant of a substance. All products which are electrically conductive reflect radar signals very well. Even slightly conductive products provide a sufficiently strong reflection for a reliable measurement. All products with a dielectric constant ε r greater than 2.0 reflect radar pulses sufficiently (note: air has a dielectric constant ε r of 1). Reflected radar power dependent on the dielectric constant of the measured product VEGAPULS 54K enamel 5 % 50 40 30 20 10 5 0 0 5 % 2 25 % 40 % 4 6 8 12 14 16 18 10 20 Signal reflectivity grows stronger with increasing conductivity or increasing dielectric constant of the product. Hence, nearly all substances can be measured. As process fitting, standard flanges of DN 150, DN 200, ANSI 6“ or ANSI 8“ are used. Due to high quality enamel coating, the sensors withstand even extreme chemical and physical conditions. The sensors deliver stable, reproducible analogue or digital level signals with reliability and precision, and have a long useful life. ε r
Page 1 and 2: Operating Instructions VEGAPULS 54K
Page 3: 24 101-EN-041227 Sicherheitshinweis
Page 7 and 8: 24 101-EN-041227 Product descriptio
Page 9 and 10: 24 101-EN-041227 Mounting and insta
Page 15 and 16: 24 101-EN-041227 Electrical connect
Page 29 and 30: 24 101-EN-041227 Set-up Rx 250 Ω
Page 31 and 32: 24 101-EN-041227 Set-up 2. Operatin
Page 33 and 34: 24 101-EN-041227 Set-up Confirm wit
Page 35 and 36: 24 101-EN-041227 Set-up False echo
Page 37 and 38: 24 101-EN-041227 Set-up Rx VEGAMET
Page 39 and 40: 24 101-EN-041227 Technical data 6 T
Page 41 and 42: 24 101-EN-041227 Technical data Mea
Page 43 and 44: 24 101-EN-041227 Technical data 6.2
Page 45 and 46: 24 101-EN-041227 Technical data VEG
Page 47 and 48: 24 101-EN-041227 Supplement 1.4 Det
Page 49 and 50: 24 101-EN-041227 Supplement 3 Set-u
Page 51 and 52: 24 101-EN-041227 Supplement 6 Safet
Page 53 and 54: 24 101-EN-041227 Supplement CE decl
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24 101-EN-041227 Supplement VEGAPUL
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Operating Instructions - VEGAPULS 54K enamel

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