Levitronix LEVIFLOW LFS Series User Manual

User Manual for LEVIFLOW
®
LFS Flowmeters
www.levitronix.com
PL-4502-00, Rev11, DCO# 18-107
29
6 Troubleshooting
6.1 Common Troubles
#
Phenomenon
Possible Cause
Countermeasure
1
“0-Er” indication on converter display
Zero adjustment is not working
properly.
Check if the circuit is filled with liquid and the flow is actually
zero, and conduct zero adjustment again.
2
“b-Er” indication on converter display
Incorrect signal received from
measurement in the sensor.
- Check if measuring tube is filled with liquid
- Check if there is something in the measuring path
disturbing the ultrasonic wave (bubbles, solid substances
etc)
- Check if excessive noise is generated in the neighborhood
of the sensor (heavy devices like motors, high voltage
cables etc)
- Check if the cables are connected correctly and not
damaged
3
Zero flow is indicated even if there is
flow in the hydraulic circuit
Wrong parameter and
mechanical setup of sensor or
zero adjustment performed
under flow conditions.
- Check if the parameters have been set to the optimal
values
- Check if the flow direction is correct
- Redo zeroing at 0 lpm
4
Zero flow is indicated at flow level
below cut-off value.
Standard cut-off value as
shown in Table 8 is not
adequate for application.
- Adapt lower cut-off value with LEVIFLOW
®
Configuration
Software
5
The flow indication does not match
the real flow
Wrong parameter settings,
excessive bubbles or solids in
the measurement path.
- Check if the parameters in the converter are set correctly
- Inspect the flow path for stagnating solids
- Inspect the measurement path for excessive bubbles
6
Above full scale flow is indicated or
the flow signal is unstable
Wrong parameter settings,
excessive bubbles or solids in
the measurement path.
- Check if the parameters in the converter are set correctly
- Inspect the flow path for stagnating solids
- Inspect the measurement path for excessive bubbles
Table 15: Potential troubles and the possible countermeasures
6.2 Troubleshooting with LEVIFLOW
®
Configuration Software
More detailed error analysis can be done with the LEVIFLOW
®
Configuration Software. Contact Levitronix
®
for a sample of the configuration software and the according manual (Levitronix

Doc.# PL-4501-00).
7 Technical Support
For troubleshooting, support and detailed technical information contact Levitronix

Technical Service
Department:
Levitronix

Technical Service Department
Technoparkstr. 1
CH-8005 Zurich
Switzerland
Phone for US: 888-569 07 18
Phone for outside US: +1 888-569 07 18
E-Mail: TechSupport@levitronix.com

Levitronix LEVIFLOW LFS Series Specifications

General

Brand	Levitronix
Model	LEVIFLOW LFS Series
Category	Measuring Instruments
Language	English