Sensofoil® Membrane Potentiometer

Sensofoil® FR4-Magnet

Resistive track printed on circuit board – integrated ferromagnetic strip allows for contactless operation using a magnet, even through a thin enclosure

Magnetic potentiometers can also be manufactured on FR4 material. The integrated ferromagnetic material creates a magnetic pull, strong enough to work through an enclosure using the appropriate magnet. This technology allows for contactless and wear-free operation. Due to the circuit board, the Sensofoil® FR4-Magnet provides various mounting options besides the standard adhesive film.

How does it work?

The operating principle of the Sensofoil® PET-Magnet can also be applied to the Sensofoil® FR4-Magnet. The base membrane is replaced by a circuit board, providing further connecting and mounting options. The FR4 board can also be equipped based on customer requirements.

Technical Details

• ► Linear and radial designs
• ► Operating temperature: 0°C to +55°C
• ► Storage temperature: -25°C to +85°C
• ► Length up to 500mm
• ► Up to 20 million operations
• ► Linearity: 2% linear design
• ► IP Rating: up to IP54
• ► Flat design starting at 2.1mm

Features

• ► Contactless operation
• ► Easily adapted to customer specific design

Composition

• ► Collector membrane as wiper tap
• ► Ferromagnetic strip
• ► Spacers
• ► Circuit board with potentiometer resistive track
• ► Adhesive film or various connector options