16
Chapter 3. MOUNTING AND WIRING
z
Flange connection
• Gasket
A gasket is required for connecting the flange.
The following table shows the internal diameters dimensions of the
gaskets:
Pipe Size
(mm)
Internal diameters
(mm)
40
49
50
61
Handling Precautions
• If the gasket inner diameter is too small, the flow speed
distribution may be disturbed and adversely influence accuracy.
• If the gasket inner diameter is too large, leakage may occur.
• Align the inner diameters of the piping and the flowmeter, and
attach so that the gasket does not protrude into the inside of the
piping. If it does, leakage might result.
z
Flange Shape
Use a flange that ensures a large contact area with the gasket.
Good example
Bad example
Flange
Welded part
Pipe
Welded part
(Leakage may
occur since the
gasket contacting
part is small.)
