SSI Technologies, Inc. Controls Technologies Division

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Fluid-Trac® 3-Wire Liquid Level Sensor (Voltage Output )

The Fluid-Trac® 3-wire ultrasonic liquid level sensor is a non-contact sensor that offers a wide variety of input and output options which enables them to interface with many different microprocessor-controlledfuel gauges or digital instrumentation.

The Fluid-Trac® 3-wire liquid level sensor can be factory programmed to have a ratio-metric output to drive 12V fuel electronic gauges (automotive applications).

The Fluid-Trac® 3-wire liquid level sensor can also be factory programmed to provide a non-ratiometric voltage output (0.5 to 4.5 V) for interfacing to control modules, PLC controllers, digital instrumentation, or DAQ systems to indicate tank volume levels.

Please check out our complete library for Fluid-trac® downloadable Application Note, technical documents and drawings on the Resource Library page.

More Accurate: Distance accuracy of +/- 0.125 inches (1/8th inch).

More Reliable: Fluid-Trac® is non-contacting. Resistive float sender have a wiper that slides across a resistive strip that with time can wear and cause intermittent or complete loss of the signal.

Non-Invasive: Fluid-Trac® mounts to the same opening as the resistive float sender, but does not protrude into the tank.

Easier to Install: Fluid-Trac® has no components to protrude into the tank.

Digital Filtering: Digital filtering eliminates errors due to liquids sloshing in mobile tanks.

Tank Profiling: Factory programmable strapping tables for unique tank shapes.

Chemical compatibility: Fluid-Trac® works with a wide variety of media including gasoline, diesel, motor oil, hydraulic fluid, black water.

Tank Volumetric Error Detection: Optional factory programmed non-ratiometric voltage output with “in range” values for error detection.

Minimal Dead Band: No bottom dead band like on other senders. Optional Fluid-Trac® mounting adapter can be used to reduce or potentially eliminate the top dead band.

American Boat and Yacht Council (ABYC) Certified

Electrical Specifications

Supply Voltage	10-32 VDC
Voltage Output	Ratiometric OR Non-Ratiometric (0.5 to 4.5 Vdc)
Range	Up to 32 inches
Range (Gasoline*)	Up to 24 inches
Distance Resolution	0.07 inches
Distance Accuracy	+/- 0.125 inches
Operating Temp Range	-40 to 85 ° C
Storage Temp Range	-50 to 100 ° C
Output Sink Current	20mA max (12 V) 25mA max (24 V)

* Note: Gasoline range is different due to the density of gasoline vapors.

Gasoline vapors are denser as the temperature increases which results in the speed of sound being slower

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P.O. Box 5011 | 2643 West Court St. | Janesville, WI 53547-5011 | 1-888-477-4320 | 608-758-1500 | Fax 608-758-2491