2 For your safety2.1 Authorised personnelAll operations described in this operating instructions manualmust be carried out only by trained specialist personnelauthorised by the plant operator.During work on and with the device the required personalprotection equipment must always be worn.2.2 Appropriate useVEGAFLEX 65 is a sensor for continuous level measurement.You can find detailed information on the application range inchapter "Product description".Operational reliability is ensured only if the instrument isproperly used according to the specifications in the operatinginstructions manual as well as possible supplementaryinstructions.For safety and warranty reasons, any invasive work on thedevice beyond that described in the operating instructionsmanual may be carried out only by personnel authorised by themanufacturer. Arbitrary conversions or modifications areexplicitly forbidden.2.3 Warning about misuseInappropriate or incorrect use of the instrument can give rise toapplication-specific hazards, e.g. vessel overfill or damage tosystem components through incorrect mounting or adjustment.2.4 General safety instructionsThis is a high-tech instrument requiring the strict observance ofstandard regulations and guidelines. The user must take noteof the safety instructions in this operating instructions manual,the country-specific installation standards as well as allprevailing safety regulations and accident prevention rules.The instrument must only be operated in a technically flawlessand reliable condition. The operator is responsible for trouble-free operation of the instrument.VEGAFLEX 65 • 4 … 20 mA/HART 52 For your safety31845-EN-080716