Wear-free precision: the WPH encoder with Hall-effect sensor element

The WPH single-turn encoder uses a wear-free Hall-effect sensor element that stands out for its exceptional durability and accuracy. Unlike mechanical sensors, it does not suffer wear and tear, ensuring reliable measurement over the long term.
Hall-effect sensors operate on the basis of the Hall effect – a physical property of semiconductors. When an electric current flows through a semiconductor and a magnetic field is present, the Hall effect generates a measurable voltage across the current flow. This voltage varies depending on the strength and direction of the magnetic field generated by the rotation of the encoder.

The advantages of the WPH Hall-effect sensor include:

• Wear-free: because the sensor element has no moving parts, it is practically wear-free and requires little to no maintenance.
• High accuracy: Hall-effect sensors provide outstanding accuracy of 0.2% of the measurement range and measurement repeatability of 1 LSB (least significant bit).
• Quick reaction time: the WPH boasts a sampling rate of 150 µs and provides fast and precise readings, which is crucial in many applications.
• Durability: on account of the non-contact measuring technology, the WPHs have an increased resistance to vibration and shock loads, making them ideal for demanding environments.

The WPH is available with two housing diameters: 40 mm (WPH-M) and 60 mm (WPH). The encoder accommodates two standard shaft diameters: 6 mm (WPH-M) and 10 mm (WPH) in order to suit the specific requirements of your project. The single-turn encoder has a measuring range of up to 360° thanks to the non-contact sensor element. Flexible analogue output options from 0.5 to 4.5 V or 0 to 5 V allow you to adapt it to your project. The standard temperature range is -20°C to +85°C, but there are also versions with an extended operating temperature range of -40°C to +120°C available.

Typical applications for encoders with Hall-effect sensor elements:

• Industrial robotics: precise measurements of angles are crucial when positioning and controlling robots in industrial applications.
• Medical technology: Hall-effect encoders ensure accurate positioning for medical devices such as imaging systems and medical robots.
• Aerospace: encoders are used in aircraft and spacecraft to control flaps, antennas, and other moving parts.
• Automotive: encoders are used in steering systems, accelerator pedals, and other vehicle control systems.
• Energy generation: in wind turbines and other power generation systems, Hall-effect encoders ensure precise measurements and control.
• Automation technology: in the field of automation technology, encoders are used to precisely control machines and systems.

Technical specifications for the rotary transducer WPH can be found in the data sheet WPH.
For more information on rotary transducers, see the product page encoders.