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Science Forum Index » Engineering - Joining (Welding) Forum » gauges
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Message |
| Grant Erwin |
 Posted: Thu Apr 24, 2008 6:03 pm |
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Guest
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Some guys colloquially call regulators "gauges". I am not one of them. Most
welding regulators have two gauges on them. One is high pressure and the other low.
I buy quality regulators when I see them cheap. I see a lot of them. What I am
wondering is what causes the problem when a gauge doesn't quite return to zero.
Is it repairable? Does it necessarily mean the gauge is inaccurate?
Thanks,
Grant |
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| BobH |
| Posted: Thu Apr 24, 2008 8:01 pm |
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Guest
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Grant Erwin wrote:
Quote: Some guys colloquially call regulators "gauges". I am not one of them. Most
welding regulators have two gauges on them. One is high pressure and the
other low.
I buy quality regulators when I see them cheap. I see a lot of them.
What I am wondering is what causes the problem when a gauge doesn't
quite return to zero. Is it repairable? Does it necessarily mean the
gauge is inaccurate?
Thanks,
Grant
Usually not returning to zero means it has been overpressured and the
bourdon tube stretched, though sometimes just applying pressure very
fast will make the little sector gear jump a tooth, especially if the
gauge is dirty.
I don't know if they are fixable. I have popped the gears a tooth or two
to get them to show zero again, but I have never attempted to calibrate
one afterwords.
Good Luck,
Bob |
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