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Helios Users Guide
Fuel algorithm v2
The new fuel calculation algorithm greatly improves the fuel level
monitoring in Helios units. To use the new fuel algorithm, you must
configure the Helios unit with the correct Analog input connected to the
fuel tank, and the fuel graph slope.
The slope is determined as the ratio between the voltage on the fuel tank
and its contents.
For example, if the voltage level is going down as the fuel tank is being
emptied, then there is a direct ratio between them and therefore the
slope is positive. In other words, a positive slope will appear if the full
tank measurement is 10V, for example, and empty tank is 0V.
If the fuel tank voltage level is increasing as the fuel tank is being
emptied (which is the most common case), then the ratio between the
voltage level and the fuel tank is an inverse ratio, and therefore the slope
is negative. In other words, if the full tank measurement is 0V and half-
full tank is 6V, then the graph line slope will be negative.
In order to implement the new fuel algorithm, download and install the
latest Installer version. In Installer, connect to the unit and run
Firmware Update. Go to Helios Parameters > Hardware and enable the
Fuel algorithm v2 option.
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