TD80™ Level Gauging and Overfill Prevention System Product Manual
Page 20 TD80 Installation/ Rev. 2, August 4, 2015
i. Installed light will blink
ii. Installed horn will briefly sound
iii. Installed underfill prevention system will activate then deactivate
c. Fail/Spill alarm is pulsed
i. Installed light will blink
ii. Installed horn will briefly sound
iii. Installed Overfill prevention system will activate then deactivate
2. Display will show “----” for up to several seconds, then one of the following:
a. “2 LO” if the tank is empty or contains liquid and the depth is less than 5.5”
b. Level if the tank contains liquid and the depth is greater than 5.5”
c. Error message “E xx”, where xx is a number
d. “SPill”
3. Test the volume display by doing the following:
a. For dual rod probes, run your hand along the probe to check the volume display
and alarm settings. If the probe is not within reach, use foil or a metal rod to short
the two probe rods together.
i. Volume displayed will increase as the hand or shorting rod moves toward the
top of the compartment
ii. Volume displayed will decrease as the hand or shorting rod moves toward
the bottom of the compartment
b. For coaxial probes, insert a small metal rod into the holes along the probe. Short
the center rod to the outer tube to check the volume and alarm settings.
i. Volume displayed will increase as the shorting rod moves toward the top of
the compartment
ii. Volume displayed will decrease as the shorting rod moves toward the bottom
of the compartment
4. Set the Fill alarm according to the customer’s requirements.
5. Clear all active alarms.
6. Confirm that the following occurs when the probe is shorted at selected points:
a. “2 LO” is displayed when the tank level is less than 5.5”. Volume is displayed
when the level is above 5.5”.
b. Installed Fall alarm activates when the tank level decreases to or is less than the
Fall alarm setting.
i. Display flashes the volume
ii. Installed light and horn activate
iii. Installed underfill prevention system activates
c. Installed Fall alarm deactivates when either the Up or Down button is pressed.
i. Display returns to normal, not flashing
ii. Installed light and horn deactivate
iii. Installed underfill prevention system deactivates
d. Installed Fill alarm activates when the tank level increases to or exceeds the Fill
alarm setting.
i. Display flashes the volume
ii. Installed light and horn activate
e. Installed Fill alarm deactivates when either the Up or Down button is pressed.
i. Display returns to normal, not flashing
ii. Installed light and horn deactivate
f. HH alarm activates when the tank level reaches the HH alarm setting.
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