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Old 01-14-2009, 03:50 PM #1
AlmightyRuler
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BLAST LPR guage accuracy.

I read somewhere on here that the LPR guage on the BLAST pressure tester (Ashcroft guage that goes up to 300 psi) is inaccurate. Is this true? If so, what guage would be a good replacement & where can I get one? Is it just the LPR guage or is it also the HPR guage?
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Old 01-14-2009, 04:38 PM #2
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it was in the darq clan. a blast tech told steve that the older gauges that read to 300 aren't as accurate at the new ones that read to 160. it has to do with the gauge itself, and all ashcroft gauges for that matter being most accurate in the middle of their measuring sweep.
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Old 01-14-2009, 04:39 PM #3
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Where could I find a replacement?
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Old 01-14-2009, 04:57 PM #4
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i know that macrolineguy sells all different ranges of ashcrofts
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Old 01-14-2009, 09:57 PM #5
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It is not like it is inaccurate, just that if you only need to measure something from 0 - 100psi, the 300psi gauge is a very broad measurement and the dial will be less accurate as the ticks are in 5psi measurements if I am not mistaken. Whereas with the 100psi one (Macrolineguy sells it), the ticks on the dial are in 2psi measurements.
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Old 01-15-2009, 06:45 AM #6
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We were just told a gauge is at it's most accurate in the middle of it's range, which is why all the new testers are coming with 160psi gauges for the LPR
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Old 01-16-2009, 12:23 AM #7
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Old 01-16-2009, 06:26 AM #8
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That might be better, but digital equipment still has a margin of error. My dial caliper and digital caliper are both rated to the same +/-.002" accuracy, even though the digi reads down to half a thou. But gauge his most likely is better since spring are suceptable to temperature change much lower than those that would affect a digital gauge.
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Old 01-17-2009, 08:51 AM #9
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Jason told me that the guages, that aren't the uber expensive digital ones dangled in our faces above, are most accurate at the very center of the guage range. The 300 guage is most accurate at it's 150 mark. The margin for error increases by a small percentage the further away from midline you get. The example he used was on a 300 guage, your reading 80 when in fact your pressure could be as low as 65 and there's no cheap way to tell other than issues cycling/firing the marker. Now let's look at the new guages BLAST is putting on their pressure testers. They only go up to 160. Which puts that guage at it's most accurate at 80 psi. What do we set our LPRs around? 150 or 80? The guage that goes to 160 is the one that was recommended because the margin for error percentage doesn't affect the guage so much, if noticably at all, at the pressures we need for our Marqs.

That's how it was explained to me by Jason at BLAST and it made sense. He asked that I spread the word.

And yes, a digital guage from Ashcroft will be the end all be all for guages. Especially at the pressures, volumes, and regulators we are looking at on our equipment. That is definitely as good as it will get for paintball purposes. If I had the $$$ to drop on one I would have one. lucky son of a gun. I just saw the 100 psi guages on macrolineguy. Ordered one for myself.
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Old 01-17-2009, 01:23 PM #10
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Like everyone here has mentioned the 100psi gauge sold by macroline guy is the way to go. Just make sure you switch the one in the back not the one on the side.
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Old 01-17-2009, 06:58 PM #11
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Is the 100 psi gauge better if you are looking to set your lpr to 85? I thought the 160 psi would be better... something about the center of the range.
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Old 01-17-2009, 07:15 PM #12
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Quote:
Originally Posted by HavocAE View Post
Is the 100 psi gauge better if you are looking to set your lpr to 85? I thought the 160 psi would be better... something about the center of the range.
Yes, you want the 160psi guage.
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Old 01-18-2009, 06:54 PM #13
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If I buy one from BL right now, would it have the different gauge on it? Or does it need to be bought separately.
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Old 01-18-2009, 07:32 PM #14
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my belief is that they are shipping with 160 psi LPR gauges, but call to be sure.
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