Advantech selects Zytronic PCT-based touch sensors

The PPC-175T has a 17in colour TFT LCD with a 1,280 x 1,024 resolution and features a high-performance Intel microprocessor chip (Pentium or Celeron M), 2Gb of DDR RAM memory and a host of high-speed interconnects.

Designed for use in harsh industrial environments, the PPC-175T has an operating temperature that extends from 0C right through to +50C in humidity levels of up to 85 per cent and is capable of withstanding up to 10G of shock.

It is also encased within an IP67-rated enclosure to fully protect it against water ingress.

The 17.1in Zypos touch screen, which forms an integral part of the panel PC, is based on Zytronic's proprietary PCT.

The sensing element consists of an interlocking matrix of micro-fine capacitors, each one only 10um in diameter (a quarter of the thickness of a human hair), optically laminated behind a pure glass panel.

The PCT sensor element is not located on the outer surface or edge of the screen, where it would be exposed to potential sources of harm, but instead embedded into a durable laminated glass substrate that can even be placed behind and operated through a thick layer of glass or polycarbonate for added protection.

With a pure glass front, the sensor can be completely sealed into its enclosure.

PCT-based touch screens are suitable for a variety of heavy-duty industrial applications and can even be operated with a gloved hand.

Suitable for both indoor and outdoor use, even in harsh climates, Zytronic's projected capacitive touch sensors enable a long and trouble-free operating lifespan and reduce the need for expensive maintenance call-outs, according to the company.