To ensure accurate readings and unlock the full potential of the Cerbo GX and the Mopeka ProCheck sensor you have to program the correct values. The following are the values you should use depending on the size of the tank you are using.
| Tank Size | Orientation | Sensor value when full (cm) | Capacity (Gallons) | Empty Value (cm) |
| 20 lbs | Vertical | 25.4 | 5 | 3.8 |
| 30 lbs | Vertical | 38.1 | 7 | 3.8 |
| 40 lbs | Vertical | 50.8 | 10 | 3.8 |
| 100 lbs | Vertical | 81.3 | 24 | 3.8 |
| 120 gallon | Vertical | 97.6 | 120 | 3.8 |
| 120 gallon | Horizontal | 61.0 | 120 | 3.8 |
| 150 gallon | Horizontal | 61.0 | 150 | 3.8 |
| 250 gallon | Horizontal | 76.2 | 250 | 3.8 |
| 500 gallon | Horizontal | 94.0 | 500 | 3.8 |
| 1,000 gallon | Horizontal | 104.2 | 1,000 | 3.8 |