American Magnetics 175 Industrial Level Transmitter (CE-Marked) - Manual (Page 16)

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Troubleshooting
General
Indication Cause Solution
Level, Level %, and
Loop values are
incorrect
Poor Calibration
Recalibrate using more
accurate Cal Points. Increase
the distance between the Cal
Points.
Level readings are
repeatable, but
consistently wrong.
Poor Calibration
Recalibrate using more
accurate Cal Points. Increase
the distance between the Cal
Points.
Display values
“bounce”
Turbulence
Adjust the Damping value.
Increase it until the display is
stable.
Error Display
Indication Cause Solution
EEPROM failure Bad Checksum
Press “Up” & “Down”
simultaneously, and hold until
the display changes. This will
completely reset the
transmitter back to factory
default values. Recalibration
will be necessary. If this
occurs again, contact the
factory.
The LO Cal point has not been
set
Calibrate the LO Cal point
The HI Cal point has not been set Calibrate the HI Cal point
The transmitter has not been
calibrated
Calibrate the transmitter
Overrange (output is
greater than 20.5mA) The capacitance measured is
greater than the cal Range
Increase the 20mA Pt value
The capacitance measured is
less than the cal Range
Decrease the 4mA Pt value
Underrange (output is
less than 3.8mA)
Open Probe
Check the wiring between the
Probe terminals in the
Instrument housing and the
Probe
Shorted Probe
Test the Probe using the
procedure shown in the
“Check Probe” section.
No Input
Shorted Probe Wiring
Check the wiring between the
Probe terminals in the
Instrument housing and the
Probe