Loop Fail-Safe; Output At Empty - Omega LVU500 Series User Manual

LVCN414-SW Appendix
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Note: To reset the configuration table, press the Clear Screen button
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LOOP FAIL-SAFE

This feature allows you to select the fail-safe current output if the sensor
looses echo confidence. When the sensor regains echo confidence, the
output current will revert back to the current level condition.
o Hold Last Value – The output will remain in the same state as
the last validated echo detected. Example: If the output was 6.7
mA just prior to the lost signal, the sensor will continue to output
6.7 mA until echo confidence is regained.
o Empty - The output will revert to the current value for an empty
condition. When 4 mA at Bottom is selected, the sensor will
output 4 mA during a fail-safe condition. If 20 mA at Bottom is
selected, the sensor will output 20 mA during a fail-safe
condition.
o Full – The output will revert to the current value for a full
condition. When 4 mA at Bottom is selected, the sensor will
output 20 mA during a fail-safe condition. If 20 mA at Bottom
is selected, the sensor will output 4 mA during a fail-safe
condition.
o Overfill (21mA) – The sensor will output 21mA during a fail-
safe condition.
o Overfill (22mA) – The sensor will output 22mA during a fail-
safe condition.

OUTPUT AT EMPTY

This feature allows you to select the orientation of the 4 to 20mA output
(4 to 20 mA or 20 to 4 mA). Choose which output setting best fits the
application. Factory default is 4mA at bottom and 20mA at top, as this
configuration scenario is an industry standard. When connecting your
sensor to a display, you must account for your output orientation setting.
o 4mA at Bottom – The output current will be 4mA when the
sensor measures an empty tank and 20mA when the sensor
measures a full tank.
o 20mA at Bottom – The output current will be 20mA when the
sensor measures an empty tank and 4mA when the sensor
measures a full tank.
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Section Six