I have just been given a project at work and we are magnetically stress testing DUTs at extreme temperatures going from -40 Degrees Celsius to 200 Degrees Celsius. I need to come up with a way that we can read the magnetic field strength while we are testing. I have tried looking into a hall sensor but I would need it in die form and can't find it anywhere, especially in the temperature range given. Do you have any suggestions? I only started as a Co-Op student and am drawing blanks as I don't have much experience in this field.