Vega VEGACAP 62 Operating Instructions Manual

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5 Connect to power supply5.1 Prepare the connectionAlways keep in mind the following safety instructions:l Connect only in the complete absence of line voltageIn hazardous areas you should take note of the appropriateregulations, conformity and type approval certificates of the sensorsand power supply units.Connect the operating voltage according to the following diagrams.Take note of the general installation regulations. As a rule, connectVEGACAP 62 to vessel ground (PA), or in case of plastic vessels, tothe next ground potential. On the side of the instrument housing thereis a ground terminal between the cable entries. This connection servesto drain off electrostatic charges. In Ex applications, the installationregulations for hazardous areas must be given priority.The data for power supply are specified in chapter "Technical data".The instrument is connected with standard two-wire cable withoutscreen. If electromagnetic interference is expected which is above thetest values of EN 61326 for industrial areas, screened cable should beused.Use cable with round cross-section. A cable outer diameter of 5 … 9 mm(0.2 … 0.35 in) ensures the seal effect of the cable gland. If you areusing cable with a different diameter or cross-section, exchange theseal or use a suitable cable gland.In hazardous areas, only use approved cable connections forVEGACAP 62.Take note of the corresponding installation regulations for Exapplications.5.2 Connection procedureWith Ex instruments, the housing cover may only be opened if there isno explosive atmosphere present.Proceed as follows:1 Unscrew the housing cover2 Loosen compression nut of the cable entry3 Remove approx. 10 cm (4 in) of the cable mantle, strip approx.1 cm (0.4 in) insulation from the ends of the individual wires4 Insert the cable through the cable gland into the sensorNote safety instructionsTake note ofsafety instruc-tions for Ex ap-plicationsSelect power supplySelecting connectioncableSelect connec-tion cable for Exapplications16 VEGACAP 62 • - two-wire5 Connect to power supply30007-EN-090604