Owner's manual

INSTALLATION, CONNECTIONS, and OPERATION
Mounting. The FMG210/220 can be supported by its piping
connections if the piping is rigid and there is no vibration.
Alternatively, the grounding studs can be used for mounting by
inserting them through pre-drilled holes. Note the centerline
distance in the dimensional drawing on following page.
OPERATION
The newly-installed meter takes from a few seconds to a minute
for the signal to stabilize at startup, especially if it has been dry.
In normal operation, keep the meter lled with uid to prevent
this delay. An empty pipe detection feature will normally detect
absence of liquid in the pipe and register zero ow when the
meter is mounted properly.
The 4-20 mA signal outputs 4 mA at zero ow and 20 mA at
maximum rated ow. The 4-20 mA output requires a seperate
12-24 Vdc power supply. The pulse signal is a 50% duty cycle
pulse set at 1000 pulses/liter (3785 pulses/gallon).
CAUTION: Although this meter has an
empty pipe detection function, under
certain conditions of empty or partially-
full pipe the meter may read
a ow when there is none. If this is a
hazardous condition, mount the meter in such a way as
to ensure the meter will always be full of liquid.
INSTALLATION
Piping. Metallic pipe or tube, or plastic tubing, can be used
with the meter. The meter comes with male NPT or barb ttings
(see chart, next page, for sizes).
For plastic tubing, use female NPT tubing adaptors. In
installations exposed to vibration, it is not recommended to
use the piping as the sole support for the meter, particularly
on the smaller sizes.
A minimum of 1” of straight pipe run is recommended on the
inlet side of the meter. Straight run is not necessary on the
outlet.
CONNECTIONS
Power and signal connections are provided by the single 4- or
6-conductor color-coded cable. See the Wiring Connections
chart on next page. In addition, it is necessary for proper
operation to ground the unit to a good quality earth ground.
Use the 12 ft. grounding wire supplied with the unit, or if
necessary, a longer wire attached to one or both of the
grounding studs. If metal piping is used, ground connections
from the grounding studs on the bottom of the unit to both
inlet and outlet pipes provide the best results in metering
accuracy. See Grounding diagrams on next page.
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