GE DigitalFlow DF868, Service Manual

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Chapter 2. Error Codes and Screen Messages
18 DigitalFlow™ Multipurpose Ultrasonic Liquid Flowmeter Service Manual
E11: Poor Signal
Problem:
This message indicates a poor signal.
Cause:
The shape of the processed signal is not good enough to formulate a flow measurement.
Action:
Check the pipe and setup parameters and the transducer connections. The process may not include enough
two-phase content — switch to transit-time mode.
E12: Incoherent Signal
Problem:
This message indicates an incoherent signal.
Cause:
The flow measurements, as determined by the two Repetition Periods, are too dissimilar.
Action:
Check the pipe and setup parameters and the transducer connections. The process may not include enough
two-phase content — switch to transit-time mode.
E13: Over Range
Problem:
This error code message indicates that the present measurement exceeds the capacity of the meter.
Cause:
A internal mathematical overflow has occurred in either the volumetric or mass flow calculations.
Action:
Select larger measurement units or a shorter time interval for the current measurement parameter. For
example, choose
KSCF/M
instead of
SCF/M
. See the Startup Guide for instructions.
E14: Totals Overflow
Problem:
The totalizers are unable to keep up with the total flow signals.
Cause:
The programmed units/pulse value is too small.
Action:
Select a larger number of units/pulse value.