How to calibrate the Fuel level in a C series Display

The calibration process depends on the type of sensor you’re using. Below is an example for a fuel level sensor connected directly to an analogue input on the C1212.

1. Assign the Sensor to a Channel

In Dash Manager (C1212), go to:
Connections → Devices
Select the AV input where the sensor is connected (e.g., AV1).
Then go to:
Channel → Search → “Fuel Level” → OK

2. Calibrate the Input

Double click the input assigned to the Fuel Level channel to open the calibration screen.
Choose the appropriate calibration type:

Radiometric, Absolute Voltage, or Variable Resistance (depending on your sensor).

Enter calibration values for known fuel levels against sensor readings. Here’s a basic example:

Example Calibration Steps:

Empty Tank:

Drain the tank and ensure the dash is connected.
In the calibration screen, enter 0 L in the right column and click Read Value to capture the current sensor reading in the left column.

Partial Fill:

Add a known amount of fuel (e.g., 25 L), enter this value in the right column, and click Read Value.

Repeat:

Continue at intermediate points (e.g., 50 L) and finally at full capacity.
The more points you add, the more accurate the calibration will be.

Values between calibration points will be linearly interpolated.
You can also set the maximum tank capacity under:
File → Manage Vehicles → Edit → Fuel Tank Capacity

 

3. Configure Fuel Prediction

Once the sensor is calibrated:

Go to:
Calculations → Fuel Prediction → Fuel Remaining → Generate Fuel Remaining
Set Method: Fuel Level Sensor and Input Channel: Fuel Level.
To reduce fluctuations, apply a large filter (e.g. 10 seconds).


Additional Options
If you have ECU fuel data or want to use advanced calculations, Dash Manager is capable of the following:

Calculate both Fuel Used and Fuel Usage (Fuel Flow Rate) from either an incrementing Fuel Used value, a Fuel Used Pulse or a Fuel Usage (Fuel Flow) value.
Calculate Fuel Used Per Lap each time the Lap beacon is detected.
Calculate Fuel Remaining from either a Tank Level sensor or by subtracting Fuel Used from the Tank Capacity. Tank Capacity is specified in the Details Editor.
Calculate Laps Remaining from Fuel Remaining, Tank Capacity and Laps per Tank. The Tank Capacity and Laps per Tank are specified in the Details Editor.
Calculate Laps Remaining (by Last Lap) from Fuel Remaining and Fuel Consumption from the last Lap.

I would also recommend opening Calculations → Fuel Prediction and press F1 for more information about the fuel calculations.