Hall TLE4945 and Neodymium Magnet ?

[carpenter]

I need a non-contact limit switches.
I would like to try Hall TLE4945 and Neodymium Magnet. Unfortunately, I do not know how investigates to what distance the hall magnet safely detect
TLE4945 switches on -6mT +10mT
ow do I find the distance sensor which detects this magnet **broken link removed** and this **broken link removed**
In both cases, the sensor perpendicular to and parallel with the sensor

 

[BradtheRad]

I do not know how sensitive that particular model is, but I understand there are Hall effect sensors which will respond to the earth's magnetic field.

Neodymium magnets are much stronger than the earth's magnetic field. You may find you need to angle the magnet so as to weaken its effect. You may find you must move it some distance away, before the Hall switch changes its output to low.

Experimentation is the only way to find out.

 

[jiripolivka]

The Hall effect sensor may be too sensitive and a neodymium magnet too strong for the task. I would use pole extenders (steel plates or bars, Fe sheet is fine) to limit the sensitivity as well as magnet field to a narrower volume, then the complete system will work best. Make a test jig to optmize the system.