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Old 01-19-2009, 02:19 PM   #1
alohanole
 
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I recently acquired a used micromatic premium nitrogen regulator and the title says what my problem is. With no cylinder attached and no pressure, the low pressure (beer gas line) gauge reads 5 psi. I removed the plastic cover and pushed the needle down to zero, and it promptly returns to 5psi. Is there a way to calibrate or adjust these things? I read the manual, no mention of this problem. I would rather not have to buy a new gauge, but I will if I have to. Just wanted to see if anyone could assist. Thanks in advance!

 
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Old 01-19-2009, 03:04 PM   #2
david_42
 
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One of my gauges has a small hole on the back with an Allen socket. It allows adjusting the zero on the dial. The rest have no provision for adjustment.
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Old 01-19-2009, 09:20 PM   #3
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If you don't have an adjustment, check out lowes/home depot. I haven't tried yet, but saw they do have cheap gauges in their tool/air compressor section...

Good luck!
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Old 01-19-2009, 09:48 PM   #4
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Rather than moving the dial, perhaps you can rotate the face instead.
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Old 01-20-2009, 03:17 AM   #5
alohanole
 
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Thanks for all the suggestions. I called micromatic today and was told these gauges have no adjustments. I will look at Lowe's and see what they have. In the meantime, I just have to remember to subtract 5 psi on my nitro tap.

 
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Old 06-09-2011, 07:27 PM   #6
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Raising this thread from the dead because I have a very similar problem, though mine is stuck near 10. Before I even saw this thread, I did the same thing as the OP and removed the cover. If I push the needle down it just springs back to its original position.

Is it safe to assume that if I set it so that it reads 20, that I'm actually at 10 PSI?

I will have to double check for a method of calibrating.

I intend to fix it, but I have better things to spend money on right this moment. In the meantime, I'd like to avoid overcarbing a beer!

 
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Old 06-11-2011, 07:56 PM   #7
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No one answered, but I just replaced the gauge and I'm guessing that the old gauge WAS accurate, if I compensated for the offset. However, that's no way to go through life.

In addition, as I was adjusting the pressure with the old gauge it wasn't really moving the needle right away. The new gauge moves as I would expect.

It looks like replacing the gauge is clearly the fix for this problem. It was easy and I got a 0 to 30 psi, so I can more accurately dial in my pressure.

 
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