Badger Meter M-Series M3000 - Manual (Page 9)

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ALWAYS locate ON/OFF valves on the
downstream side of the meter
To minimize the possibility of partially full pipe fl ows in
horizontal, gravity or low pressure applications, create a pipe
arrangement that insures the detector remains full of liquid at
all times
Meter Gaskets and Grounding
Two other considerations to meter location, orientation and
application are gasket and grounding requirements and
placement.
Meter/Pipeline Connection Gaskets
Gasket(s) (not provided) must be installed between the
detector isolating liner and the pipeline fl ange to ensure a
proper and secure hydraulic seal. Use gaskets compatible
with the fl uid fl ow. Center each gasket on the fl ange to avoid
fl ow restrictions or turbulence in the line.
Do not use graphite or any electrically conductive sealing
compound to hold gaskets during installation. Measuring
signal accuracy could be affected.
If a grounding ring is used in the detector/pipeline
connection, place the ring between two gaskets. (See Non-
Conductive Pipe Grounding section.)
Meter Grounding
Process pipeline material can be either electrically
conductive (metal) or not electrically conductive (made of or
lined with PVC, fi berglass or concrete).
To ensure proper unit operation, the mag meter impact
ground (zero voltage reference) must be connected
to the liquid media and to a good, solid earth ground.
Perform grounding procedures after the meter is
connected to the pipeline.
Conductive Pipe Grounding
A grounding bolt is located on each mag meter fl ange. Drill
and tap the pipeline fl anges on each side of the meter and
install a grounding bolt to each.
To ground the unit, attach a ground strap (provided) of
copper wire, at least 12AWG size, between the grounding
bolts on the meter fl anges and the bolts on the pipeline
fl anges. Do this on the inlet and outlet sides of the meter.
Non-Conductive Pipe Grounding
If the process pipeline material is not electrically conductive
and your meter was not ordered with an optional grounding
electrode, place a grounding ring (available from Badger
Meter) between two gaskets on both ends of the meter.
SUPPLIED HARDWARE INCLUDES:
2 GROUNDING RINGS
4 BOLTS
4 LOCK WASHERS
2 NUTS
2 GROUND STRAPS
GASKETS RECOMMENDED
GROUNDING RING INSTALLATION KIT
After the grounding rings, gaskets and meter are assembled
to the pipeline, attach ground straps (provided) of copper
wire, at least 12AWG size, to grounding bolts on meter
fl anges and to the grounding rings.
If your meter was ordered with an optional grounding
electrode, the use of grounding rings is not necessary.