Omega FMG70B Series, User Manual

Page: 11 / 24

Electrical connection
Technical changes reserved - 11 -
5 Electrical connection
The electrical connection of the FMG70B is via the 5-pin plug M12x1 at the top of the
housing.
The wiring of the FMG70B depends on the ordered version. A distinction is made between
frequency and analog output, as well as basic and optional wiring.
CAUTION! Electric current!
The electrical connection should only be carried out by a fully qualified electrician.

De-energize the electrical system before connecting the FMG70B.
CAUTION! Material damage and fire hazard!
Exceeding the specified limits will cause damage to the electronics. Without current
limiting, there is a fire hazard due to overheating of the device.

Connect the FMG70B only to a power source with limited power.
Optional wirings:
Depending on the version, an analog output can be optionally connected.
Connecting cable:
Suitable connection cables with molded coupling socket are available in various lengths
included in the range of Omega accessories. The shielding is already connected with the
knurled nut.
IMPORTANT! Shielding required!

Use only shielded connection cables.

The shield of the connection cable should not
be connected to earth.
We recommend to ground the pipes directly before and
behind the FMG70B (

Figure).
IMPORTANT NOTICE:
Pay attention to the temperature resistance of the connecting cable (

§ 9 "Technical
data") at high media temperatures.
If the temperature resistance is smaller than the medium temperature, the cable may not
be directly laid on the pipe.
Connection 5-pin plug M12x1:

Screw the coupling socket of the connection cable to the plug of the FMG70B.

Tighten the knurled nut of the coupling socket with a maximum torque of 1 Nm.