Flowline DL34 EchoPod - Manual (Page 16)

16 of 29 EchoPod 31 MAR 11
MN204210 Rev B
Loop Fail-Safe
This feature allows you to select the fail-safe current output if the
sensor fails to detect a return signal. When the sensor regains signal,
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 echo detected. Example: If the output was 6.7 mA
just prior to the lost signal, the device will continue to output
6.7 mA. Sensor will indicate the level when signal was
regain.
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 when a fail-safe condition occurs.
If 20 mA at Bottom is selected, the sensor will output 20 mA
when a fail-safe condition occurs.
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 when a fail-safe condition occurs. If 20 mA at
Bottom is selected, the sensor will output 4 mA when a fail-
safe condition occurs.
o Overfill (21mA) - The output current will go to 21mA when
the return signal is lost.
o Overfill (22mA) - The output current will go to 22mA when
the return signal is lost.
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. Typical installations are set with 4 mA at
Bottom. This will not affect the performance of the sensor other than
the output of the EchoPod. WebCal’s factory default is 4mA at
bottom and 20mA at top. When connecting your sensor to a display,
you must account for your output settings.
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.
Note: Right click on any menu that you may have questions on to open the help menu.
Note: To reset, press the Clear Screen button.