How software handles fuel level calibration curve

[FZ]

Hi all,

our flying club bought a used plae with installed EMS and EFIS.
The EMS as we took over the plane, the fuel level calibration lacked in the EMS.
We succeeded to successfully calibrate the level sensor according to the manual,
but an important question remained.
For the first 5 Liters we added, the sensor didn't change its value.
Same for the last 5 Liters we filled in.
How does the firmware handle such nonlinearities ?
How are they translated to display values?

Will the last 5 liters be handled as a reserve that remains after the display is low? Does the display jump from 6 to 0 which would be terrible? I think, you know a much better way to handle this problem, and I would feel better if I knew how it is done.

Thanks for you help,

Friedhelm

 

[dynonsupport]

Re: How software handles fuel level calibration cu

The first 5 liters are not displayed at all by the EMS. As far as its concerned, they're unmeasurable. So when you get to "0" on the display, that means that the sensor has hit its bottom, and there are 5 more liters in the tank.

The final 5 liters are also unmeasurable, so you just see XX+ liters when the sensor hits its top stop when you're overfull. Once the sensor starts moving, the actual measured values are displayed.

The end result is no jumping, and the EMS never overestimates fuel, though it does clearly indicated when you're full.