Baumer – Inductive Distance Sensors – AlphaProx

Inductive Distance Sensors

Baumer Inductive Distance Sensors deliver micrometer‑scale precision in contactless metal distance and position measurement, combining the robustness of inductive sensing with fully integrated signal processing for industrial automation. The AlphaProx family spans compact and standard cylindrical and cubic housings, offering linearized and non‑linear outputs, high resolution down to the nanometer range, and parameterization via teach‑in or IO‑Link.

AlphaProx sensors support a broad measurement range and flexible installation, making them suitable for axial and lateral positioning, vibration detection, run‑out measurement, and force feedback applications. Fully calibrated at the factory, these sensors provide consistent linearity and excellent repeat accuracy over time and temperature, with options for dedicated process outputs and extended diagnostic data when used with IO‑Link interfaces.

For more info, download our full technical spec.

Specifications

Product family	Bauformen	Max. measuring range	Resolution	Characteristic	Switching output	Teachable	Designation
Subminiature	ø4	1 mm	1 µm	non-linear			IWRM 04
Subminiature	5×5	1 mm	1 µm	non-linear			IWFM 05
Subminiature	8×4.7	2 mm	1 µm	non-linear			IF08.DxxS
Miniature	ø6.5	3 mm	1 µm	non-linear			IR06.DxxS
Miniature	M8	3 mm	1 µm	non-linear			IR08.DxxS
Compact	M12	6 mm	1 µm	non-linear			IR12.DxxS
Compact	M18	8 mm	5 µm	non-linear			IR18.DxxS
Compact	M30	24 mm	5 µm	non-linear			IR30.DxxS
Compact	12×12	4 mm	1 µm	non-linear			IWFM 12
Compact	18×10	4 mm	1 µm	non-linear			IWFM 18
Compact	20×8	2 mm	1 µm	non-linear			IWFM 20
Compact	20×12	5 mm	5 µm	non-linear			IWFM 20
Linearized	ø6.5	3 mm	3 µm	linear		●	IR06.DxxL
Linearized	M8	3 mm	3 µm	linear		●	IR08.DxxL
Linearized	M12	6 mm	3 µm	linear	●	●	IR12.DxxL
Linearized	M18	8 mm	8 µm	linear	●	●	IR18.DxxL
Linearized	M30	24 mm	10 µm	linear		●	IR30.DxxL
Linearized	18×10	4 mm	5 µm	linear			IWFM 18
High sensitivity	M12	3 mm	1 µm	linear		●	IR12.DxxK
High sensitivity	M18	3 mm	1 µm	linear		●	IR18.DxxK
High resolution	M12	3 mm	0.004 µm	non-linear			IPRM 12
Factor 1	M18	8 mm	20 µm	linear		●	IR18.DxxF
Washdown	M18	7 mm	5 µm	non-linear			IWFR 18
IO Link	ø6.5	3 mm	5 µm	linear	●	●	IR06.DxxL
IO Link	M8	3 mm	5 µm	linear	●	●	IR08.DxxL
IO Link	M12	6 mm	3 µm	linear	●	●	IR12.DxxL
IO Link	M18	10 mm	5 µm	linear	●	●	IR18.DxxL
IO Link	M30	18 mm	10 µm	linear	●	●	IR30.DxxL