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Documentation

App Setup

Legacy Systems

Ths guide is not compatible with Legacy Fuellox hardware and applies solely to V2 units.

Fundamentals

The 4-20mA sensor produces a linear relationship across the sensor range.

Sensor ValueLiquid Depth (H2O)
4 mA0 mm
20 mA3,000 mm

There is however an adjustment required where the fluid density is not 1.0 kg/L

The typical density of diesel fuel is 0.85 - 0.87 kg/L.

The corrected table for a diesel tank, assuming a max height of a containerized tank of 2.7m is therefore

Sensor ValueLiquid Depth (ADF)
4 mA0 mm
21 mA2,700 mm

*ADF = Automotive Distillate Fuel or Diesel

In Fuellox we assume the tank bottom is going to be a few hundred litres when its empty.

Bluetooth Config for Level

The simplest way to apply the tank level calibration to the hardware is via the app.

Enter the Manage Devices section:

  1. Select and connect to the device
  2. Set the parameters above in the app [note that the 16,652 is converted/rounded to 17 for the hardware]
  3. Click Save
  4. Await the 2x Green notifications
  5. Power Cycle the unit

Apply new settings

BLE Level Settings

Data Updated

Updated System

Illumination of Error LED

If you update the level system and see the Error LED right after reboot, it indicated the sensor is dry and not submerged. If the error persists after the fuel is supplied, the sensor may be wired the wrong way around. Switch the polarity of the sensor.

Configuration of Website Strapping Data

  • Admin access is required.
  • Level tables can’t be applied from the Simplified View. Toggle the view the Default.
  • All new systems are to use the Tank Level Calculation Version 3

Overview

Here are the steps to activate level on the main dashboard.

  1. Create the Tank
    • Apply the Warning and Reorder levels
    • Add the Tank Capacity
  2. Edit the Device
    • Update the capacity
  3. Add the Tank Level Calibration
  4. Apply the settings:
    • sensor min ma = 4,000
    • sensor max ma = [upper sample ma]
    • min height = lowest mm from the dip stick. Say 100mm. Never 0
    • max height = [upper sample mm]
    • rounding. To be determined based on the tank, and the quality of the strapping table. Start with 250L
    • Click save
  5. From the Tank Level Calibration Details page, add the level nodes
    • Add the 3 nodes from the upper, mid and lower points
    • the mA values are in 000’s

Completed Strapping Table