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Newbie question regarding vacuum pump kill switch

  1. Jul 26, 2014 #1
    I have a project that I've been working on for awhile and I've recently decided to try and upgrade parts of it. However, my knowledge on the subject is pretty sparse. What I want to do is have a vacuum pump which will shut off when my chamber reaches a certain level of vacuum. If anyone could point me in the direction of literature and or parts I will need I would really appreciate it.
  2. jcsd
  3. Jul 28, 2014 #2
    Google vacuum pressure switch.

    But do you really want to switch the pump off? Won't that release the vacuum? How much vacuum is it?
  4. Jul 28, 2014 #3
    I dont have the exact vacuum i need on hand but it's not much, ive been using a sort of hand pump piston i made until now. Will it? I had assumed that the pumping chamber would be air tight and serve to hold the vacuum until i could seal the valve to the vacuum chamber.

    Also would i be able to use a cpld circuit with that?
    Last edited: Jul 28, 2014
  5. Jul 28, 2014 #4
    Air-tight checkvalve in the vacuum line would do it.
  6. Jul 29, 2014 #5
    Thank you for your responses I'll check into to both of those suggestions.
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