KROHNE OPTIMASS Sensors Corrosion guidelines EN - Manual (Page 2)

2 Corrosion Guide Rev 1.05 Jan 2006
Contents:
1 Corrosion of Wetted Parts
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Material Compatibility . . . . . . . . . . . . . . . . . . . . . . . . .3
1.3 Material Information . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.3.1 What is Stainless Steel? . . . . . . . . . . . . . . . .4
1.4 NACE Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1.5 Galvanic Corrosion with Titanium . . . . . . . . . . . . . . . .4
1.6 Problem Applications . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.7 Using Material Compatibility Tables . . . . . . . . . . . . . .5
2 Abrasion Guidelines
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.2 Protecting Flanges with Transition Pieces . . . . . . . . .14
2.3 Managing Fluid Velocity . . . . . . . . . . . . . . . . . . . . . . .14
2.4 Titanium as the standard material . . . . . . . . . . . . . . . .14
2.5 Conditioning the fluid flow . . . . . . . . . . . . . . . . . . . . . .15
2.6 Installation of the Flow Meter . . . . . . . . . . . . . . . . . . .15
2.7 Inclusion of air or gas in the fluid . . . . . . . . . . . . . . . .15
2.8 Consider installing the meter in a by-pass . . . . . . . . .15
2.9 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3 Environmental Protection
3.1 Housing Specifications . . . . . . . . . . . . . . . . . . . . . . . .16