Seametrics EM 100-102 v.2 - Manual (Page 4)

CONNECTIONS
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
STANDARD
GROUNDING
IDEAL GROUNDING
WITH METALLIC PIPING
To Earth Ground
To Earth Ground
GROUNDING and TROUBLESHOOTING
Problem Probable Causes Try...
Analog output at 0 mA
Analog output is 4 mA
with flow
No pulse output
Flow rate incorrect
4-20 mA loop needs an external power
supply - if missing, add it
Connect to earth ground
Note flow direction arrow, reverse direction
to match
Change output connection
Connect to earth ground
Change flow direction
Check for proper grounding
Select another flow meter
Install meter in vertical position
No loop power
Unit not grounded
Flow reversed
Reversed output connections
Not grounded
Reversed flow
Missing or incorrect ground wire
Fluid conductivity <20 microSiemens/cm
Empty pipe
LT-65200187-C
12/3/09
Seametrics Incorporated • 19026 72nd Avenue South • Kent, Washington 98032 • USA
(P) 253.872.0284 • (F) 253.872.0285 • 1.800.975.8153 • www.seametrics.com
TROUBLESHOOTING