Precise and cost-efficient angle measurement
Rotary position sensors enable precise angle measurements. Rotation sensors transform mechanical rotary positions into electrical signals. Sensors for detecting changes in angle and direction of rotation are also called incremental encoders or rotary encoders. Althen provides rotary position sensors based on differential transformers, as well as inductive sensors and rotary potentiometers. We also develop custom solutions for you. Our sensors have measurement ranges between 10° and 360°.
We offer standard rotary position sensors but can also help you with a customized desin or a complete measurement solution.
Althen Sensors & Controls has established itself as a reliable provider of rotary position sensors, offering a range of high-precision solutions with unique features tailored to meet the needs of diverse industries. With a commitment to quality, durability, and innovation, Althen continues to play a pivotal role in advancing technology across various sectors through its cutting-edge sensor solutions.
Althen offers you a wide range of angle sensors based on different technologies. Classic rotary angle sensors (also known as angle sensors, inductive sensors or protractors) work according to the principle of the differential transformer (LVDT). The rotary angle sensors from Althen are a special form of LVDTs, so-called RVDTs (Rotary Variable Differential Transformer). They can be individually configured and have a very long service life. Our customers often use them for hydraulic servos in ailerons in aerospace technology and in engine and fuel system controls. Potentiometric rotary position sensors are divided into two groups according to their design: single-turn and multi-turn rotary position sensors. Both are frequently used in OEM applications.
Althen offers a broad selection of rotary position sensors based on different technologies.
Conventional rotary position sensors (also: angle sensors, inductive sensors, goniometers) are based on the principle of differential transformers (LVDT). Althen rotary position sensors are a special type of LVDTs called RVDTs (rotary variable differential transformers). They can be configured to suit specific needs and are very durable. Our customers typically use them in hydraulic servos for control surfaces in aerospace engineering, or for controlling engines and fuel systems.
Rotary potentiometers can be divided into two categories: single-turn and multi-turn rotary position sensors. Both are commonly used in OEM applications. They are available in small or medium quantities at relatively low cost.
Every rotary position sensor has a primary coil and two secondary coils. The transmitter core works contactless and is mounted on high-quality bearings, so that the rotary position sensor offers effectively wear-free operation. These inductive sensors require alternating current supply voltage.
Other sensors in our portfolio use advanced inductive technology. These rotary position sensors (also: angle sensors, inductive sensors, rotation sensors) have only one secondary coil. The stable, non-linear output signal is linearized using application-specific integrated circuitry (ASIC). Integrated amplifiers output the signal as an analogue voltage or current signal. For optimum measuring results, choose from a broad range of different operating voltages and output signals. A special version featuring a Zener barrier is certified for use in explosive hazard environments. We supply these intrinsically safe ATEX rotary position sensors for Ex II 1G, Ex II 1GD, and Ex i/II M1/1GD hazard zones.
For OEM applications, we supply small and medium quantities of rotary potentiometers. Based on their mechanical properties, they can be divided into two categories:
Our single-turn rotary position sensors have a measurement range of 360 degrees. They are available with or without a mechanical stop at the end of the rotation. A change in resistance depicts the measurement range of 360 degrees as 0 to 5 kOhm.
Multi-turn rotary position sensors can measure beyond the 360 degree limit of a single turn. Multi-turn rotary position sensors have a range of 1800 degrees (5 full revolutions) and map this entire range onto a change in resistance of e.g. 5000 Ohm.
We have the right rotary position sensor for every application. We are happy to support you in your selection. At Althen, we draw on more than 40 years of experience to offer you the optimum solution: fully customised to your requirements. This also includes customised angle sensors as a complete package. The advantage for you is that we are not tied to one manufacturer and can advise you independently. On request, we can customise the measuring system exactly to your needs. Do you have any questions? We are glad to help you!
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