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  1. #1
    Join Date
    Apr 2013
    Location
    Palm Beach,Florida
    Posts
    2

    sman3 vacuum gauge

    Is anyone else having issues with theirs? When i am pulling a vac and it gets under 500 microns i go to close the valve on the gauges and microns go up like there's a leak.They hold nitro pressure of +200 for as long as i want it to.So is there anyone having this problem? and are we loosing vac or is it just messed up sensor/gauge reading?

    Thank You

  2. #2
    Join Date
    Oct 2008
    Location
    Fullerton
    Posts
    780
    Quote Originally Posted by SoFloAnt View Post
    Is anyone else having issues with theirs? When i am pulling a vac and it gets under 500 microns i go to close the valve on the gauges and microns go up like there's a leak.They hold nitro pressure of +200 for as long as i want it to.So is there anyone having this problem? and are we loosing vac or is it just messed up sensor/gauge reading?

    Thank You
    SoFloAnt,

    Give me a call at Fieldpiece. I can walk you through the set up for vacuum to determine if you manifold is leaking or something else is going on. 714 634 1844. Thanks!

    Russ

  3. #3
    Join Date
    Feb 2010
    Location
    In a boiler room
    Posts
    7,123
    What are you using for a vacuum setup? If you are pulling through manifold with hoses, there are a lot of potential leak points, not to mention the possibility of the hoses permeating.

    It most likely not a problem with the gauge.

  4. #4
    Join Date
    Aug 2004
    Location
    Missouri
    Posts
    15
    RSES just recently had an article in their journal about pressure testing holding but smaller leaks showing up when put in a vacuum. Like chuckcrj suggested, make sure your hoses aren't the source, then find that leak.

  5. #5
    Join Date
    Jan 2011
    Location
    Highland Park, CA
    Posts
    83
    The SMAN3's not great for vacuuming. I use to experience the same issue. I asked the Fieldpiece booth at the last IHACI convention what was up, and he suggested using a ball valve hose to isolate the yellow or vacuum hose. I simple use core removers on both liquid and suction valves straight to a vacuum pump, with a separate vacuum gauge off of the suction side core remover outlet so I can isolate the system in a vacuum by closing both core removers and still monitor microns.

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