Seametrics EM 100-102 v.1 - Manual (Page 3)

PIPING
Metallic pipe or tube, or plastic tubing can be used with the meter. The -025 and -038 meters have 3/8 NPT male
pipe fittings, and the -050 has 1/2 NPT male pipe fittings. For plastic tubing, use female NPT x tubing adaptors. In
installations exposed to vibration, using the piping as the sole support for the meter is not recommended, particularly
on the smaller sizes.
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. This does not apply to plastic tubing. 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 cable, and are color-coded. See the “wiring
connections” chart. 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.
WIRING
CONNECTIONS
EM 100/102 SERIES
MAGNETIC FLOW METER INSTRUCTIONS
RED + 12 to 24 VDC Power
BLACK - Power
GREEN + Pulse Output Isolated
WHITE - Pulse Output Isolated
ORANGE + 4-20 mA Isolated
BLUE - 4-20 mA Isolated
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Optional
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CH
IVE
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(Includes Dates Before 1
1/06)