What is the scale factor for IMU MAG sensor data?

ArduCopter
1

Hello Everyone,

I am digging in sensor data and have questioned about it.
When I graphed the RAW_IMU data via MAVExplorer.py, I can see that scaling factor for each sensor like below.

  • Acc: sensor data * 9.81 * 0.001
  • Gyro: sensor data * 0.001
  • Mag: sensor data

Why don’t mag sensor data have a scale factor?

thanks for the reply in advance.