SensoInk® Membrane Potentiometer

SensoInk® PET

Polymer paste printed on foil

For applications on radial surfaces (tubes) usually PET or Kapton foils are used. Hoffmann + Krippner has developed a paste formula that allows to print abrasion and chemically resistant resistive paths on inexpensive PET. In order to achieve these specifications a polymer thick film paste, already in use by H+K, was modified to match the temperature level of the PET foil that the paste can be completely cross-linked and hardens. In terms of abrasion resistance and chemical resistance this technology is comparable to conductive polymers on printed circuit boards.

Technical Details

• ► Operating temperature: -25°C to +55°C
• ► Storage temperature: -25°C to +85°C
• ► Linear design: up to 900mm
• ► Up to 3 million operations
• ► Linearity: 4% radial design, 2% linear design
• ► IP Rating: up to IP65
• ► Flat design starting at 0.5mm

Features

• ► Operation possible by hand or wiper
• ► Easily adapted to customer specific design

Composition

• ► Collector membrane as wiper tap
• ► Spacers
• ► Potentiometer resistive track
• ► Adhesive film