3.2Terminal assignment of the individual circuits LOF 500 ..LOF 500 19" ..LOF 500 19" DuoAuxiliary power L14d30d32N15d32z32PE/PA13, 12d + z28, d + z14d + z30, d + z16 Output circuit Output level detector (1)6, 7, 8d16, d18, d20d18, d20, d22Output „S“ or „Z“9, 10, 11d22, d24, d26Output level detector (2)d24, d26, d28 Signal generator circuit Level detector (1)1 + 2d2 + d4d2 + z2Level detector (2)d8 + z84Installation instructionsDuring any work carried out on the measuring transducers, the relevant technicalsafety regulations, in particular the BetrSichV (German plant safety directive) regulations, the ExVO (German explosion protection directive) regulations, and the VDE (German association of electricians) regulations for electrical connection work must be observed.The measuring transducer type LOF500 must be installed in splash-proof form.The housing protection type is IP40.The measuring transducer type LOF50019".. or type LOF50019"Duo must beinstalled so that at least protection class IP20 is achieved.Wiring work may only be carried out with the equipment in de-energisedcondition.The cable from the level detector to the measuring transducer must be labelledintrinsicially safe; if coloured labelling is used, then light-blue. The cable is not allowed to exceed 250m with 0.5mm
2 , 500m with 1mm
2 , and 750m with1.5mm
2 .If the measuring transducer is set up in the field, the housing protection type mustbe at least IP54.The plug-in printed circuit board version of the measuring transducer typeLOF50019".. must be installed in a housing (at least IP20).Measuring transducers may only be set up outside the area subject to explosionhazards.The ambient temperature range is -25 ° C to +50 ° C.
Overfill Protection System LOF 1.1 and LOF 500/NB220Page 42/43