Editing Hall effect sensor (section)

=== Position sensing ===
One of the most common industrial applications of Hall sensors used as binary switches is in position sensing (e.g. Figure 2).

Hall effect sensors are used to detect whether a smartphone's cover (that includes a small magnet) is closed.<ref>{{cite web |title=ZenFone 5 (A500CG) |url=https://www.asus.com/Phone/ZenFone_5_A500CG/specifications/ |access-date=2 September 2017 |website=asus.com}}</ref>

Some [[computer printer]]s use Hall sensors to detect missing paper and open covers and some 3D printers use them to measure filament thickness.

Hall sensors are used in some automotive fuel-level indicators by detecting the position of a floating element in the fuel tank.<ref>{{cite web |date=12 February 2009 |title=Liquid Level Sensing: Measuring Liquid Levels Using Hall Effect Sensors |url=https://www.infineon.com/dgdl/AppNote_Liquid_Level_Sensing_Rev.1.0.pdf?folderId=db3a30431ce5fb52011d4cae1f582dad&fileId=db3a30432313ff5e0123a385f3b2262d |access-date=2 September 2017 |website=infineon.com}}</ref>

Hall sensors affixed to mechanical gauges that have magnetized indicator needles can translate the physical position or orientation of the mechanical indicator needle into an electrical signal that can be used by electronic indicators, controls or communications devices.<ref name="esi_tank_sensors">[http://www.leveldevilsensors.com/main/electronic-sensors-inc-esi-level-devil-american-made-tank-monitors-and-tank-monitoring-systems/tabk-sensor/ Tank Sensors & Probes] {{Webarchive|url=https://web.archive.org/web/20190318111356/http://www.leveldevilsensors.com/main/electronic-sensors-inc-esi-level-devil-american-made-tank-monitors-and-tank-monitoring-systems/tabk-sensor/ |date=2019-03-18 }}, Electronic Sensors, Inc., retrieved August 8, 2018</ref>