The previous steps must first be completed before starting this section: All truck and/or trailer profiles need to be created in the AppWeigh App, all AppWeigh Sensors need to be paired with an axle group in the AppWeigh App, the truck and/or trailers need to be added to the AppWeigh App Home screen, and all AppWeigh Sensors installed on the correct axle group air line.
The calibration process involves entering both empty and loaded weights into the AppWeigh App (all weights should be obtained from a certified scale). For a brief video demonstration watch below.
1. Confirm Truck and/or Trailers have been added to the Home screen
2. Confirm the successful installation of the AppWeigh App and AppWeigh Sensors
- While standing within range of the installed sensors, open the AppWeigh App
- From the Home screen, confirm the “Last Contacted” timestamp is current (the timestamp is updated each time the app reads the sensor and can take up to 15 seconds to refresh).
- If the timestamp is not updating, try moving closer to the installed sensor. If you still have difficulty connecting, please see www.appweigh.com/support for help.
3. Enter weight on empty load
- Obtain unloaded weights for each axle group from a certified scale.
- While still empty, park vehicle on level ground with engine running, wheels chocked, and brakes off. Let vehicle idle for at least 3 minutes to allow height control valves and sensors to stabilize before proceeding to the next step.
- Open the AppWeigh App, from the Home screen, confirm all sensors have a current “Last Contacted” timestamp to ensure a current read of all sensors.
- From the main menu select Calibrate -> Empty Load.
- From the “Empty Load Calibrate” screen, enter weight for each axle group, (select the pencil icon to edit and the checkmark to save the weight).
- After entering the weight for all axle groups, open main menu and select Home.
- Verify the weight displayed for each axle group on the Home screen is the same as the weights just entered. Note: due to sensor accuracy, the weight values can fluctuate slightly from the values just entered.
4. Enter weight on full load
- Load Trailer(s) to near maximum legal load.
- Obtain weights for each axle group from a certified scale.
- While still loaded with same load, park vehicle on level ground with motor running, brakes off and wheels chocked. Let vehicle idle for at least 3 minutes to allow height control valves and sensors to stabilize before proceeding to the next step.
- Open the AppWeigh App, from the Home screen, confirm all sensors have a current “Last Contacted” timestamp to ensure a current read of all sensors.
- From the main menu select Calibrate -> Full Load.
- From the “Full Load Calibrate” screen, enter weight for each axle group, (select the pencil icon to edit and then checkmark to save the weight).
- After entering the weight for all axle groups, open main menu and select Home.
- Verify the weight displayed for each axle group on the Home screen is the same as the weights just entered. Note: due to sensor accuracy, the weight values can fluctuate slightly from the values just entered. i) The Calibration step is now complete.
5. The AppWeigh system should now be ready for use.