Xylem EX100/200-Series ELECTROMAGNETIC FLOW SENSORS - Manual (Page 15)

Page 13
Problem Probable Cause Try...
No pulse output
Output pulses incor-
rect
Jumpy reading
Connect to earth ground
Check the Presence of Flow LED (see p. 12)
Note flow direction arrow,
reverse direction to meter
Change output connections
Check plumbing
Check for proper electrical wiring
Check for power across power input terminals
Reverse connections
Select another flow meter
Check for proper ground
Check depth setting from
Dimension “C” table (page 4)
Select another flow meter
Check for full pipe or install meter in the verti-
cal
position
Check for air pockets or turbulence. Refer to
installation, page 6
Check for proper electrical wiring
Install chemical injection line downstream of
magmeter (or far enough upstream to allow
complete mixing of fluids before meter)
Unit not grounded
Below minimum flow cutoff
Flow reversed
Output connections reversed
Pipe not full
Excessive electrical noise
No power
Power reversed
Fluid conductivity <20 microSiemens/cm
Missing or incorrect ground wire
Incorrect depth setting
Fluid conductivity <20 microSiemens/cm
Empty pipe
Not enough straight pipe
Excessive electrical noise
Rapidly changing conductivity (in chemi-
cal
injection or fertigation applications)
TROUBLESHOOTING