The most important customer requirements for an instrument display are: durable, robust, and good readability of the active pressure even from a distance of up to 3 m, even in poor light conditions.

Red LED displays are still the most widely used technology in the industrial environment. The most important benefits of LED technology in my opinion still in favour are the following:

  • High brightness
  • Good contrast
  • Long life
  • Mechanically robust
  • Low current consumption (low intrinsic heating)
  • Wide temperature range

In addition, in the WIKA pressure switch PSD-30, particular attention was paid to the following items, in order to guarantee optimum readability even in poor light conditions:

  • Particularly large character size
  • Even illumination of the individual segments
  • Special contrast enhancement display filter

 



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