34 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 6 Installation
Assembly of the welding adapter with flange or threaded connector
Welding adapter with flange connector
Dimensions in mm (in)
Centering pin
Groove for O-ring
Connection flange DN 25 (1 in)
Flow direction
Figure 20: Dimensions in mm (in)
Ø D – outer pipe diameter (min. / max.)
100 to 350 (3.94 to 13.78)
> 350 to 700 (> 13.78 to
> 700 to 1400 (> 27.56 to 55.12)*
* The limitation of the maximum pipe diameter only applies for installations with a sensor element in the middle of the pipe. In case of larger or non-round
cross-sections, a non-centered position of the measuring element in the piping is considered in the calibration.