There are two well proven Force Cal methods known as PUSH DOWN and LIFT UP. The choice depends on vessel design, site conditions and production requirements. If the vessel is full of product, the “Lift Up” method is used. If the vessel is empty, the “Push Down” method is used. Where possible, for optimum calibration flexibility, we recommend the fitting of “Dual Option” test rig brackets. These allow the vessel to be calibrated under any site condition (third method).