just how accurate are the air gauges on PCP guns ? within 10 percent ? 3 percent ? 15 percent ? are there gauges that are within one percent that will fit ?
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N/A air gauge accuracy
- Thread starter beerthief
- Start date
My compressor gauge and gun gauge are always the same, at least as far as I can see, when the fill is done.
So unless they are all calibrated wrong, they seem to be pretty much correct.
So unless they are all calibrated wrong, they seem to be pretty much correct.
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I find that all of mine with the exception of one align fairly closely, within say 3% of each other. So that's the fill gauge on my compressor, a DIN fill adaptor, a CGA fill adaptor, an S410, Sidewinder, Huben K1, Jet 2 and three SCBA tanks. I have a fourth SCBA tank that reads high, and it actually had a tag on it indicating the same when I bought it. That one's off by about 400 psi or around 10%.
There have been a few others that I no longer have, but I remember those matching up pretty closely as well.
There have been a few others that I no longer have, but I remember those matching up pretty closely as well.
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All three of my RAW HM1000x gauges read 50 bar above what is correct. My motorized pump is correct - thankfully 
.
Since an inexpensive gauge fitting the gun well is unavailable - I just go along ..... and assume a 50 bar adjustment - down.
At least they consistently give the same high reading ...............
50/250 = 10% off
.Since an inexpensive gauge fitting the gun well is unavailable - I just go along ..... and assume a 50 bar adjustment - down.
At least they consistently give the same high reading ...............
50/250 = 10% off
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Yep mine tooAll three of my RAW HM1000x gauges read 50 bar above what is correct. My motorized pump is correct - thankfully
Since an inexpensive gauge fitting the gun well in unavailable - I just go along ..... and assume a 50 bar adjustment - down.
At least they consistently give the same high reading ...............
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You guys are pretty trustworthy ! I guess I am too.
With normal "BAR", reading gauges, it's a VERY coarse read. That is, YOU CAN'T TELL, how close one gauge is to another !
Unless you have a big 3"+ dia. gauge with single digit hash marks or digital gauges, you are just guessing about the % difference, gauge to gauge.
The 2-1/2" gauge on my fill tank is "supposed to be" within 3% according to the guys at Top Gun Arms. But again, being that 1 bar equals 14.5 psi...those little psi values will add up pretty fast, when you CAN'T see 1 bar on 99% of the analog gauges that we get on our guns !
All this reminds me that a couple of years ago, I was going to build a test manifold, using a certified pressure gauge as the telltale. I never did.
Mike
With normal "BAR", reading gauges, it's a VERY coarse read. That is, YOU CAN'T TELL, how close one gauge is to another !
Unless you have a big 3"+ dia. gauge with single digit hash marks or digital gauges, you are just guessing about the % difference, gauge to gauge.
The 2-1/2" gauge on my fill tank is "supposed to be" within 3% according to the guys at Top Gun Arms. But again, being that 1 bar equals 14.5 psi...those little psi values will add up pretty fast, when you CAN'T see 1 bar on 99% of the analog gauges that we get on our guns !
All this reminds me that a couple of years ago, I was going to build a test manifold, using a certified pressure gauge as the telltale. I never did.
Mike
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Keller or Sekhmet are within that 1%. I own two Sekhmets, but wish I had bought the FX Kellers instead. Quality control on the Sekhmet lacks even with the gen 2.
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heh, unless damaged id say most are within 10% .. but within 30% is all thats needed imo, as long as its repeatable and isnt sticking or sonething you can get pressure where the gun wants it .. and just as a note id say taking any hi pressure device to its maximum limit as a matter of procedure isnt wise ..
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Mubhaur, does the "Sekhmet" fit the RAW w/o the need to cut the stock?
Even if yes, that's $100 for the pressure gauge .....
Do you think the other gauge (feedback) data helps in your process?
Even if yes, that's $100 for the pressure gauge .....
Do you think the other gauge (feedback) data helps in your process?
2nd Generation Sekhmet Digital Pressure Gauge 28mm Pro 1/8 BSPP 300 bar
This SEKHMET Smart Gauge is worldwide famous for its easy read and ultimate accuracy, and are even used in precision equipment, and they are built for PCP airguns. Suitable for 300 bar (4350 psi) working pressure. It has a 1/8BSPP connection. With multi smart-functions, many shooters will desire...
www.sekhmetonline.com
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They also make 25mm gauge. I hope it should be installed on RAWMubhaur, does the "Sekhmet" fit the RAW w/o the need to cut the stock?
Even if yes, that's $100 for the pressure gauge .....
Do you think the other gauge (feedback) data helps in your process?
2nd Generation Sekhmet Digital Pressure Gauge 28mm Pro 1/8 BSPP 300 bar
This SEKHMET Smart Gauge is worldwide famous for its easy read and ultimate accuracy, and are even used in precision equipment, and they are built for PCP airguns. Suitable for 300 bar (4350 psi) working pressure. It has a 1/8BSPP connection. With multi smart-functions, many shooters will desire...www.sekhmetonline.com
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My scuba cylinder and pump give the same reading from low to high as I can read the needle, so I assume they are close to correct. My pcp tube gauge reads the same at 100 bar, but at 250 bar on the pump and cylinder the pcp reads about 270 bar, thus 20 bar higher.
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Does not matter. The numbers and hash marks are so small I can't read them. I just adjust until I get the results I a looking for and then use a paint pen to put a mark on the gauge.
I have said this before, but I really wish someone would make a bluetooth transponder to replce the gauges and let me monitor pressures on my iPad.
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Actually, I hate my Sekhmets. I regret purchasing them. They have been problematic from day one. I may just use them for target practice. Customer service is a joke. Enjoy.
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For starters, the 2 gauges I received the displays didn't match. One was white and one was blueish. I have a King so i use 2 gauges. The one that was blueish also wasn't sitting level in the display window. I did receive a replacement, but it still didn't match the white display. It was sitting level so I just accepted it. Just recently the whiter of the 2 is acting up not keeping the settings. For example, I have it set for regulator, after it powers off, it defaults back to the pro settings.These things are just plain buggy.
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I have a glycerin filled gauge on my SCBA that came from Joe B. I feel it’s fairly accurate and it’s what I go by when filling my guns.
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All three of my RAW HM1000x gauges read 50 bar above what is correct. My motorized pump is correct - thankfully
Since an inexpensive gauge fitting the gun well is unavailable - I just go along ..... and assume a 50 bar adjustment - down.
At least they consistently give the same high reading ...............
50/250 = 10% off
50/250 = 20% off
That's a lot.
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I also have one of those and it's pretty accurate. The Sekhmet are very accurate, but every other thing they do is just garbage. Lacking QC.
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