Temperature error of Hall-effect and magnetoresistive commercial magnetometers

Abstract

The paper presents a special measurement system for investigation of temperature influence on the indication of commercially available sensors of the magnetic field. Utilizing the developed system, several magnetoresistive and Hall-effect sensors were investigated within the temperature range from −30°C to 70°C. The obtained results indicate that sensitivity of most of the investigated sensors is unaffected, except the basic magnetoresistive device. However, Hall-effect sensors exhibit considerable temperature drift, regardless of the manufacturer.

Keywords

• magnetic field measurement
• magnetometers
• Hall-effect
• magnetoresistive
• temperature error