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PRESSURE SWITCHES AND THERMOSTATS IN COMPUTER OR PROGRAMMABLE LOGIC CONTROLLER OPERATED INSTALLATIONS.

[In Dutch. / En néerlandais.]

Author(s) : HEININGEN K. van

Type of article: Article

Summary

ELECTRICAL CONTACT SYSTEMS IN REFRIGERATION PRESSURE SWITCHES AND/OR THERMOSTATS HAVE NEVER BEEN A SUBJECT OF HEAVY INTEREST. IT IS PROBABLY UNKNOWN THAT SEVERAL COMPRESSOR FAILURES COULD BE CAUSED BY FAILING CONTACT FUNCTIONS. THE INCREASING USE OF PROGRAMMABLE CONTROLLERS WILL INTENSIFY THE QUALITY DEMANDS OF CONTACT SYSTEMS. THE ARTICLE DEALS WITH THE EFFECT OF VIBRATION, THE USE OF LOW VOLTAGE, THE INFLUENCE OFSHORT-CIRCUITS AND EMC EMISSION. UNDER DEVELOPMENT ARE EEC DIRECTIVES AND THE INSTITUTION OF A < CE > CERTIFICATE FOR APPLIANCES WITH LOW EMC EMISSION. THIS WILL REFLECT ON THE QUALITY DEMANDS OF CONTACT SYSTEMS OF < NORMAL > PRESSURE SWITCHES AND THERMOSTATS.

Details

  • Original title: [In Dutch. / En néerlandais.]
  • Record ID : 1992-0167
  • Languages: Dutch
  • Source: Koude & Luchtbehandeling - vol. 84 - n. 4
  • Publication date: 1991/04
  • Document available for consultation in the library of the IIR headquarters only.

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