KRAL OMG Series User Manual

9 Connection
9.2 Connecting the flowmeter to the pipe system
9.2 Connecting the flowmeter to the pipe system
Personnel qualification: o Fitter
Personal protective equipment: o Work clothing
o Protective gloves
o Protective helmet
o Safety boots
Aids: o Hoisting equipment
ATTENTION
Damage to device through mechanical stress.
► Ensure that the flowmeter is mounted free of mechanical stresses in the pipe system.
► Observe the tightening torques.
ATTENTION
Damage to device through solid particles in the pipe system.
► During welding work attach protective covers in front of the connecting flanges.
► Ensure when welding that welding beads and abrasive dust cannot get into the pipe system and
the flowmeter.
► Ensure that an operating filter is installed when the pipe system is flushed and cleaned using the
flowmeter.
ATTENTION
Damage to device when the pipe threading is screwed in too far.
► Observe the thread length of the flowmeter.
► Use a standard cutting ring screw connection.
Notice The screw-in length of the piping may not exceed the threaded length of the flowmeter, since the flow
cross-section is narrowed and internal components can be damaged.
1. Remove the protective covers and store them.
2. Place the piping in position and support the weight of the piping.
3. Install the flowmeter stress-free into the pipe system. In the process take the preferred flow direc-
tion into account and ensure that the connections of the pick up remain accessible.
4. Check the linear offset, lateral offset and angular offset and correct if necessary. If the screws
tighten easily, this is a sure sign that the installation is stress-free.
5. Tighten the connecting screws crosswise with torque Ä Appendix,Page54.
9.3 Connecting the pick up
The flowmeter is equipped with two pick ups to enable recognition of the flow direction. The first signal
measures the flow rate, the second signal determines the flow direction. In order to obtain correct val-
ues the pick ups must be connected correctly. The connections are identified with "1" and "2" on the
housing of the flowmeter. This marking depends on the preferred flow direction according to the arrow
on the rating plate Ä Identification,Page6.
In the case of a flow direction contrary to the preferred flow direction the connections have to be
swapped in order to obtain a correct signal.
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OIO 14en-GB Edition 2020-01
Operating instructions

KRAL OMG Series Specifications

General

Brand	KRAL
Model	OMG Series
Category	Measuring Instruments
Language	English