Magnetic field measurement with high accuracy

AI Thread Summary
The discussion focuses on the suitability of using Hall Sensors, specifically the AD22151, for measuring magnetic fields in the range of 0 to 50 mT with a resolution of 25 µT. The user expresses concerns about the sensor's specifications, particularly the gain and offset errors, which are ±1% and ±60 mT, respectively, questioning their adequacy for high-accuracy measurements. Temperature fluctuations of up to 1°C are noted, which could impact the sensor's performance. The user seeks clarification on whether the AD22151 can meet their accuracy requirements given these parameters. Overall, the conversation highlights the need for precise sensor specifications in magnetic field measurement applications.
Zollie
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Hi,

I would like to use a Hall Sensor (e.g. http://fwbell.com/Category/2.aspx) or a Hall Element IC, like the AD22151 device for magnetic field measurement with a range from 0 to ca. 0,5 mT with a resolution of 250 nT. (500 ppm) The temperature fluctuations are max 1 C.
Do you think I can use one these sensors for my work?
 
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I realized I made a mistake and the field range is 0- 50 mT and the resolution is 25 uT (=500ppm). Do you think the AD22151 can do this for me? There are some specifications that I don't understand, like the gain and offset errors over temperature range. They are ±1% and ±60 mT, which seems to high for me...
 

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