ABB SensyMaster FMT430 - Assembly of the Welding Adapter with Hot Tap Fitting

42 SensyMaster FMT430, FMT450 THERMAL MASS FLOWMETER | OI/FMT430/450-EN REV. B
… 6 Installation
Assembly of the welding adapter with hot tap fitting
DANGER
Explosion hazard
Explosion hazard during installation or operation of the
integrated hot tap fitting in potentially explosive
atmospheres.
• The integrated hot tap fitting must not be installed or
operated in potentially explosive atmospheres.
Wafer type design
Installation of the wafer type design is performed as explained in
Wafer type design (FMT091) and partial measuring section
(FMT092) on page 32.
Welding design
DANGER
Danger to life due to improper installation!
Do not shorten hot tap fitting components or interfere with
the design. This can lead to the measuring medium escaping
in an uncontrolled manner. This can result in severe injuries or
death.
The welding version of the integrated changing device is
available in two installation lengths:
• for nominal diameters DN 100 to 125 (4 to 5 in) and
• for nominal diameters DN 150 to 300 (6 to 12 in).
Note
• The sensor length h is 425 mm (16.73 in) respectively.
• The installation depth Y depends on the pipe diameter and
must be calculated individually.
1
Sensor
2
Centering pin
3
Flow direction
Figure 27: Integrated hot tap fitting in measurement position, dimensions in mm (in)