KROHNE DW 181-182-183-184 EN - Manual (Page 30)

30 Installation and operating instructions DW 181 - 184
Flow table
DW 184 for measuring tube
Flow velocity Scale ratio
m/s ft/s
≥DN250 (10”) 0.2 … 0.4 0.66 … 1.31 1 : 2
(or 65) 0.2 … 1 1.31 … 3.28 1 : 2.5
1 … 4 3.28 … 13.12 1 : 4
4 13.12 1 : 4
6.2 Instrument version materials
Version Cap
Gasket * Measuring
system Measuring
tube Connection Housing
DW 181/B Stainless
Steel 316 L Buna Stainless
Steel 316 L
Bronze Bronze Polycarbonate
DW 181/RR Stainless
Steel 316 L
Buna Stainless
Steel 316 L
Stainless
Steel 316 L Stainless
Steel 316 L Polycarbonate
DW 182/RR Stainless
Steel 316 L
Buna Stainless
Steel 316 L
Stainless
Steel 316 L Stainless
Steel 316 L Polycarbonate
DW 183/N Stainless
Steel 316 L Buna Stainless
Steel 316 L
Steel Steel Polycarbonate
DW 183/R Stainless
Steel 316 L Buna Stainless
Steel 316 L
Stainless
Steel 316 L Steel * * Polycarbonate
DW 183/RR Stainless
Steel 316 L
Buna Stainless
Steel 316 L
Stainless
Steel 316 L Stainless
Steel 316 L Polycarbonate
DW 184/N Stainless
Steel 316 L Buna Stainless
Steel 316 L
Steel Steel Polycarbonate
DW 184/R Stainless
Steel 316 L Buna Stainless
Steel 316 L
Stainless
Steel 316 L Steel * * Polycarbonate
DW 184/RR Stainless
Steel 316 L
Buna Stainless
Steel 316 L
Stainless
Steel 316 L Stainless
Steel 316 L Polycarbonate
*Viton, silicone, or Klingerit gaskets on request. DW 184/R: steel-clad flanges used in all cases.
* *Steel flanges for >DN100 or 4” instruments have stainless steel 316 L cladding.