[MI 019-100] Universal Instruction Manual I/A Series Mass Flow ...

2. Installation
Introduction
An Invensys Foxboro mass flowmeter consists of a transmitter and a flowtube. The CFT50
Transmitter is designed for use with the CFS10 or CFS20 Flowtube.
CFS10 or CFS20 Flowtube Installation
Site Selection
The best method of mount your flowtube is to provide a solid common support structure that is
free of vibration for all pipe supports. Examples of such a structure are a cement pad or I-beam.
NOTE
Soil or dirt surface is not a common support structure if environmental conditions
can affect the supports.
Mounting on a floor grating (even if a common floor) is not recommended because it is not free
from the effects of vibration made by movement of people or from vibration inducing devices.
If ceiling mounting is used, ensure that the overhead structure is rigid (not wood) and the
structure is common to all pipe supports.
If wall mounting is used, ensure that no other vibration inducing devices are mounted on or near
the wall. Secure the piping (not the flowtube) to the wall.
The flowtube should be isolated from large capacity pumps (especially positive displacement
pumps) and not share the same floor structure as the pumps.
The flowtube can be mounted horizontally, upward sloping, or vertically. However, if mounted
vertically (as in self-draining applications), the direction of flow must be upward to minimize the
incidence of trapped air.
Mounting CFS10 or CFS20 Flowtubes
It is important that you support your flowtube properly. To do this:
♦ Place pipe supports as close to the process connection as possible [