Dynasonics UFX ULTRASONIC FLOW METER - Manual (Page 12)

12
TROUBLESHOOTING GUIDE
Unit does not turn “ON”
when ON/OFF key is
pressed •
Verify that batteries are installed and
contain a charge.
“Err1” is indicated •
The batteries must be replaced.
No display readings are
obtained and no “OK”
icon is observed
•
Poor acoustic coupling to pipe. Apply
silicone grease to transducer.
•
Ensure pipe is full of a flowing liquid.
•
If the pipe has a plastic liner, move the
transducer to another location. The liner
may contain an air void.
•
Non-working transducer. Rub
transducer head with thumb for reading.
•
Liquid contains less than 3% total
suspended solids.
•
Move transducer closer to a source of
flow disturbance (i.e. an elbow, pump
outlet or control valve).
Dashes appear on display
•
Liquid velocity is greater than 30 FPS (9
MPS).
Readings are obtained,
but the “OK” icon does
not turn on. •
Signal strength is low. Flow readings
may be erroneous. Move the transducer
closer to a source of hydraulic
disturbance.
Erroneous Readings •
Transducer mounted incorrectly.
•
Another local ultrasonic instrument is
operating at approximately the same
frequency as the UFX.
•
Excessive pipe vibration.
•
Very viscous (thick) liquids will cause
the unit to read lower than actual flow.
•
The pipe is not completely full of liquid.