Troubleshooting - FlowLine EchoWave LG11 Series Manual

Guided wave liquid level transmitter
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Appendix
FACTORY SETTINGS
Probe Style
Rod
Coaxial
Cable (includes
counter-weight)
Note: Cable versions of the LG10/LG11 series must account for the counterweight attached to the end of the
probe.

TROUBLESHOOTING

PROBLEM
No LED.
LED flashes Red.
Sensor is locked on a level
above the true level.
MN300840 REV A5
(Lowest point of probe)
Sensor
LG10-0_ _ _-_ _
(50.8mm)
LG10-1_ _ _-_ _
(50.8mm)
LG11-2_ _ _-_ _
(200.7mm)
Sensor is not receiving power (10 to 30 VDC). Check wiring to the
sensor as well as the power supply.
Sensor cannot acquire a valid level reading. Make sure the sensor is
installed properly within the application and the probe is touching liquid.
Sensor is likely acquiring a false echo from some interference close to
the probe. Running an Empty Signal Scan should address this issue.
From Bottom
4mA
20mA
2.0"
114.8"
(2915mm)
2.0"
114.8"
(2915mm)
7.9"
219.1"
(5566mm)
SOLUTION
Section Seven
From Top
(Bottom of Mounting Nut)
4mA
20mA
116.8"
3.4"
(2966mm)
(85.1mm)
116.8"
3.4"
(2966mm)
(85.1mm)
216.2"
3.4"
(5145mm)
(85.1mm)
43
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