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Troubleshooting Guide
Copyright © 2019, SSI Technologies, LLC
Doc. DT-AN4 — Rev. 01
Digital Fluid-Trac
®
Troubleshooting Guide
Measurement Technology
The Digital Fluid-Trac
®
model DFT drum level gauge uses ultrasonic technology to generate a
high-frequency sound wave and measures the time for the echo to reflect off the target fluid’s surface
and return.
The distance from the Digital Fluid-Trac
®
sensor to the liquid is calculated based on the speed of sound.
The Digital Fluid-Trac
®
model DFT is factory programmed to work on ANSI MH2 standard 55 gallon,
30 gallon, or 15 gallon drums.
Note:
The Digital Fluid-Trac
®
is NOT intended for use with gasoline or other volatile liquids that produce
a vapor pressure under normal operating temperature (0 °C - 50 °C).
Troubleshooting
For correct operation, the Digital FluidTrac
®
DFT must be mounted properly with no obstructions between
the sensor and media being monitored.
1. If using the ¾” adapter, verify the yellow acoustic absorber disc
(see photo to the right) is properly installed inside the adapter.
A level sensor that is mounted or sitting other than level will create a
reduction in sensor performance. As shown in the illustration to the right,
the amount of returned sound energy is dependent on mounting
and/or sitting angle.
2. Verify the Digital Fluid-Trac
®
DFT mounting is parallel to the liquid.
The drum must be stored in an upright position. Ensure that barrel lid
is not extremely warped, creating an unlevel condition.
3. Verify there are no obstructions between the sensor head and the
media being measured. If something is between the sensor and the
media being tested, the sound wave will be reflected off the object
and not the media resulting in incorrect level readings.
4. Verify the unit is set to measure 55 gallon drums.
• Place the Digital Fluid-Trac
®
flat on a table top.
• Press the Refresh/Select button.
• The display should read 55 gallons (± 4 gallons, depending on which
adaptor(s) being used).
Incorrect
Correct
Distance