The Acu-Trac® NEMA4 liquid level sensor is a non-contact sensor that is a direct replacement for level senders on tanks with depths up to ≤ 1.5 meters (59 inches). The NEMA4 liquid level sensor offers a choice of outputs (analog current loop; ratiometric voltage; or non-ratiometric voltage). The NEMA4’s RS-485 bus allows real time processing of fuel data and messaging over the RS-485 bus The RS-485 bus also provides the user flexibility to program the NEMA4 sensor for tank configuration, digital filtering, sensor mounting offset, gauge drive output full and empty endpoints and communication mode

• More Accurate: 2 % of tank volume

• More Reliable: Acu-Trac® NEMA4 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: Acu-Trac® NEMA4 mounts to the same opening as the resistive float sender, but does not protrude into the tank.

• Digital Filtering: User programmable time constant in digital filtering eliminates errors due to fluids sloshing in mobile tanks.

• Tank Profiling: User programmable strapping tables for unique tank shapes.

• Chemical compatibility: Acu-Trac® NEMA4 works with a wide variety of media including diesel, motor oil, hydraulic fluid and black water.

• Self Test/Diagnostics: Power Up Test verifies sensor is operating properly and diagnostic messages are sent over the RS-485 bus.

• Real Time Fuel Data: Real time fuel data over the J1708 data link for on vehicle communication.

• RS-485 Messaging: Three types of messages are provided on the RS-485 bus – setup and programming commands, timed data broadcast message, and diagnostic messages.

• NEMA 4 Rating

• CE Mark Class B Rating