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Instrumentation Design Question For You

Draw Wiring of a Pressure Switch to control two lamps

Sketch the necessary wiring to make this pressure switch control two lamps in the following manner:

  • High process pressure: green lamp on and red lamp off
  • •Low process pressure: red lamp on and green lamp of

pressure switch control two lamps

Hint: remember that the “normal” status of a switch is defined as the status of minimum stimulus: when the switch is exposed to the lowest possible degree of process stimulation (in this particular case, to the lowest possible pressure).

Answer :

This is just one possible solution:

pressure switch control two lamps wiring

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Credits : by Tony R. Kuphaldt – under CC BY 1.0

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