Teltonika FM5500 and RCS Epsilon fuel level sensor values

Hi everyone,

I am trying to connect a RCS Epsilon ES2 fuel level sensor to a Teltonika FM5500 tracker.

When connecting the FLS directly to computer, the fuel level measurements values range from 0 to 1023.

But unfortunately when connecting FLS to tracker, the fuel level values sent by tracker to Wialon are an integer ranging from 0  (empty) to 11 (full). The truck's fuel tank being 400L, these measures are not accurate enough to effectively monitor fuel level in the tank.

Did anybody already have a similar issue? Any idea in how we can solve it?

Thanks for any help.