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Thread: Testo 552

  1. #1
    Join Date
    Jul 2007
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    Delaware
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    Testo 552

    When hooking the 552 to a system for evacuation with no manifold, are you using a short hose to come off the vcr or a brass fitting that hooks directly to the vcr?
    I was just thinking about the weight of the instrument.
    Thanks
    Always here

  2. #2
    Join Date
    Mar 2007
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    wedged in freezer shelf
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    7,168
    It looks BIG.... How much does it weigh?

  3. #3
    Join Date
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    Delaware
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    Let me go download the spec sheet and see

  4. #4
    Join Date
    May 2009
    Location
    Cummins, GA
    Posts
    1,561

    Testo 552

    It's probably 6 inches tall and 4 inches wide. Lightweight. Nice big display.

    I use a tee on pump.....with 3/8 hoses to each CRT. I then hook up a short hose to my CRT and connect to 552.

    I compared to the Bluvac yesterday. The Bluvac is def. more sensitive. But in the end they were within 75 microns of each other. The 552 was very steady.

  5. #5
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    Jul 2007
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    Delaware
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    I now see in the description that they recommend brass.

  6. #6
    Join Date
    May 2010
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    Canada
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    901
    I have been hearing that the Bluvac is more sensative but which one is more accurate? I thought I read somewhere that the Testo uses an absolute pressure sensor. This sounds like it would be more accurate but I don't know if that is the case or skimpily a buzz word. Does the testo have a leak rate indicator like the Bluvac ( this was a very big selling feature to me ). I know the Bluvac can be recalibrated by putting in a freezer but I assume the Testo will not need calibration with the absolute pressure sensor?

    I will not buy the testo simply because I already have the both the Bluvac and Bluvac LTE ( both in UEI yellow )

  7. #7
    Quote Originally Posted by Brent Ridley View Post
    It's probably 6 inches tall and 4 inches wide. Lightweight. Nice big display.

    I use a tee on pump.....with 3/8 hoses to each CRT. I then hook up a short hose to my CRT and connect to 552.

    I compared to the Bluvac yesterday. The Bluvac is def. more sensitive. But in the end they were within 75 microns of each other. The 552 was very steady.
    Was that a "tee" or "tree" ?

  8. #8
    Join Date
    May 2009
    Location
    Cummins, GA
    Posts
    1,561

    Testo 552

    It's a tree.

    But the tree has a tee.

  9. #9
    Quote Originally Posted by Brent Ridley View Post
    It's a tree.

    But the tree has a tee.
    Just curious...why not just a tee off the vacuum pump?

    I have two 3/8 and one 1/4 hose connections (one 3/8 has a reducer taking it down to 3/8) on my pump.

    Had a tree but it got bumped and bent. Was afraid it would leak. I got rid of the tree and went to the low profile three-way intake.

    you?

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