Omega FMG70B Series, User Manual

Page: 10 / 24

Installation of FMG70B
- 10 - M-5575/0416
•
Installation can occur in horizontal and vertical pipes. The flow sensor is only suitable for
application in completely filled pipe systems.
•
As a matter of principle magnetic inductive flow sensors are widely independent from the
flow profile. An inlet section is not absolutely necessary.
To reach a most highly accuracy of the measurement, you should use straight inlet and
outlet sections according to the inner diameter. The inlet section has to be at least
10 x inner diameter; the outlet section 5 x inner diameter in order to achieve the specified
accuracy.
•
The inlet and outlet sections and gaskets must have the same or a slightly larger inside
diameter than the measuring tube in order to achieve the specified accuracy.
4.2 Mounting
The FMG70B is installed directly into the pipeline. The compact design and light weight of the
unit make wall-mounting unnecessary.
IMPORTANT NOTICES:
•
Observe the flow direction indicated on the FMG70B.
•
Observe the mounting dimensions (

§ 9.5 "Dimensions").

Select an appropriate location for installation (

§ 4.1
"Installation instructions").
To ensure the best possible measuring accuracy, a vertical
installation position with increasing flow is preferable (no
collecting of dirt deposits).

Wrap the FMG70B connections with 1 to 2 wraps of thread
tape (e.g. Teflon
®
tape).
Wrap tape in a clockwise direction, viewed form the end,
leaving the first two threads uncovered.

Make sure the tape does not intrude into the flow path.

Attach the FMG70B with arrow pointed in the direction of flow.

The fittings should be screwed into FMG70B hand tight.
CAUTION! Material damage!
Do not use excessive force. The FMG70B can be
damaged.
While tightening, counter the union nut on the hexagon of the
process connection!
If you do not counter it, the FMG70B can be damaged!
Maximum Torque
FMG71B - ½'' FMG72B - ½''
• ¾"
FMG73B - 1''
15 Nm 15 Nm 30 Nm

Use two wrenches to tighten the FMG70B an additional ¾ to 1 turn.
When tightening, use a wrench (AF 1.063 or AF 1.338) to counter the process connection
on the hexagon (flange) in place.