doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Kgs. vs. Bar etc.

I get sometimes confused with all these different methods of measuring psi.

I have a Spanish marked 1000kgs. How many SAAMI psi is that? Is 1000kgs the same as 1000bar?

Thanks

Hello, anyone home?

This might help Ron. Bro Larry did all the work
http://www.16ga.com/forum/viewtopic.php?t=3428

Thanks Drew. UNless I missed it, I still don't know how many psi 1000kgs. is.

http://www.engineeringtoolbox.com/pressure-units-converter-d_569.html

1000 kg/cm2 is:
14223 psi

Pete

Thank you Pete.

Bars and kg's are close enough to each other that they are essentially interchangeable. However, when converting either to psi, you have to remember that the same method of measurement has to be used for both. Pete's conversion is correct, if the 1000 kg was measured by the piezo electric method. If done with the old lead crusher system, then there is no way of converting directly . . . although if you add 1,000 when going from a lead crusher measurement to psi as we understand it today (which is under the piezo system), you'll be pretty close.

Be careful, Others may know better then me but ,I tried some years back to get conversion tables to compare proof pressures. The problem was that British proof use a lead crusher method ,wear as the continentals used copper I was told, so you cannot make direct comparisons.I was also told that the Spanish and Italian proof pressures could not be directly compared either.With the CIP rules it has become standardised across all members. Its still confusing and in Britain in the last 100 years we have had five changes in Proof law [acts] ,marks and pressures in tons ,Kg's and bar's.Measurements in imperial and metric. Now no pressure is stamped ,just a mark to specify standard or superior proof . Confused ? Think how we feel.

Every one started out user a lead crusher. Everyone also claims to have invented the crusher. Suffice it to say, that everyone adopted this method very quickly.





Larry is of course correct. I was hoping to avoid this discussion before it goes down the path of the imperial ton.... Miller, you out there?

Pete

sounds like you have 12ga 2&3/4" game gun proofed to 850bar pressure. antiquated proof mark was 3&1/4tons per "sq.box" later changed to 900kg/sq.cm followed in late 80s or early 90s by Bar proof designation. it falls somewhere between 12,000 and 13,000 psi. hope this helps.