Operating Instructions - VEGAPULS 54K enamel

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Wrong orientation to the product Weak measuring signals are generated 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. Correct Incorrect Ladder Direct sensor vertically to the product surface Sensor too close to the vessel wall If the radar sensor is mounted too close to the vessel wall, strong false echoes can be caused. Buildup, rivets, screws or weld joints superimpose their echoes onto the product i.e. useful echo. Please ensure a sufficient distance from the sensor to the vessel wall. Sensor too close to the vessel wall Ladder If there are good reflection conditions (liquid medium, no vessel installations), we recommend locating the sensor where there is no vessel wall within the inner emission cone. For products in less favourable reflection environments, it is a good idea to also keep the outer emission cone free of interfering installations. Note chapter "4.1 General installation instructions“. Foam generation Thick, dense and creamy foam on the product can cause incorrect measurements. Take measures to avoid foam, measure in a bypass tube or use another measuring technology, e.g. capacitive meas. probes or hydrostatic pressure transmitters. Foam generation Mounting and installation 14 VEGAPULS 54K enamel 24 101-EN-041227
24 101-EN-041227 Electrical connection 3 Electrical connection 3.1 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 with low voltage. Qualified personnel Instruments which are not operated with protective low voltage or DC voltage must only be connected by qualified personnel. Connection and screening A standard two or four-wire cable (sensors with separate supply) with max. 2.5 mm 2 wire cross-section can be used for connection. Quite often, the "electromagnetic pollution" caused by electronic actuators, energy cables and transmitting stations is so considerable that the sensor cable should be screened. We recommend the use of screened cable. Screening is also a good preventative measure against future sources of interference. Ground the cable screen preferably on the sensor. It is a good idea to ground the cable screen on both ends. However, you must make sure that no ground equalisation currents flow through the cable screening. Ground equalisation currents can be avoided by potential equalisation systems. If ground equalisation cables are not available, grounding on both ends can be realised by connecting (e.g. in the switching cabinet) one end via a capacitor 1) to the ground potential. Use a very lowresistance ground connection (foundation, plate or mains earth). Note! In Ex applications, grounding on both ends is not allowed due to potential transfer. Ex protection If an instrument is used in hazardous areas, the respective regulations, conformity certificates and type approvals for systems in Ex areas must be noted (e.g. DIN 0165). Intrinsically safe circuits must not be connected with more than one active instrument (i.e. an instrument delivering electrical energy) must not be connected. Please note the special installation regulations (DIN 0165). Connection cable Make sure that the connection cables are specified for the expected conditions in your systems. The cable must have an outer diameter between 5 and 9 mm (1/2 to 1/3 inch), or with Ex d housing, 3.1 … 8.7 mm (0.12 to 0.34 inch). Otherwise, the seal effect of the cable entry would not be ensured. Cables for intrinsically safe circuits must be marked blue and may not be used for other circuits. Earth conductor terminal On VEGAPULS 54 sensors, the earth conductor terminal is galvanically connected to the flange. 1) max. 10 nF, e.g. voltage resistance 1500 V, ceramic. VEGAPULS 54K enamel 15
Page 1 and 2: Operating Instructions VEGAPULS 54K
Page 3 and 4: 24 101-EN-041227 Sicherheitshinweis
Page 5 and 6: 24 101-EN-041227 Product descriptio
Page 7 and 8: 24 101-EN-041227 Product descriptio
Page 9 and 10: 24 101-EN-041227 Mounting and insta
Page 11 and 12: 24 101-EN-041227 Mounting and insta
Page 13: 24 101-EN-041227 Mounting and insta
Page 17 and 18: 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
Page 55 and 56: 24 101-EN-041227 Supplement VEGAPUL

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