Page 13/15 Overhaul5 Overhaul5.1 MaintenanceThe sensors and associated floats are maintenance-free if they are operated according tothe manufacturer's specifications and not used to measure other media.5.2 Return shipmentBefore returning any FAFNIR equipment the returned goods authorization by the FAFNIRcustomer service is required. Please contact your account manager or the customer care toget the instructions for the return of goods.The return of FAFNIR equipment is possible only with authorization by theFAFNIR customer care.6 Technical dataVISY-Density VISY-Density LPGMeasuring range 660 … 900 g/l 440 … 660 g/lAccuracy ± 2 g/lResolution (VISY-Stick Adv.) 0.1 g/lTemperature range -40 to +85 °CDimensions (diameter x height) Ø 50 mm x 129 mm Ø 50 mm x 143 mmOperating pressure ≤ 16 barMaterial Stainless steel7 List of figuresFigure 1: VISY-Density and VISY-Density LPG module ......................................................................... 4Figure 2: Riser installation and installation with screw-in unit ........................................................... 7