PMEL Forum

K Sections => K5/6 - Physical Dimensional => Topic started by: spanishfly25 on 04-10-2012 -- 08:50:12

Title: How to convert Newton to PSI
Post by: spanishfly25 on 04-10-2012 -- 08:50:12
does anyone know how to make the conversion from pounds to PSI in a Carver press or even better from Newton to PSI. the press has a broken pressure gauge and I need to replace it and calibrated.
Title: Re: How to convert Newton to PSI
Post by: OlDave on 04-10-2012 -- 08:55:58
I would say that is dependent on the area of the ram.

Have you tried the mfg.?
http://www.carverpress.com/accessories_gauges.html
Title: Re: How to convert Newton to PSI
Post by: spanishfly25 on 04-10-2012 -- 09:44:47
thanks the RAM is 3.29  PSI times Ram = pounds
Title: Re: How to convert Newton to PSI
Post by: OlDave on 04-10-2012 -- 13:10:12
pounds force times 4.448222 = newtons
(NIST Special Publication 811)
Title: Re: How to convert Newton to PSI
Post by: jeroboambramblejam on 12-05-2012 -- 16:00:15
Try the Versaverter from pawprint.net.
Title: Re: How to convert Newton to PSI
Post by: CalLabSolutions on 12-05-2012 -- 16:29:03
It does not have a PSI to Newtons Conversion.. But I does have a lot of conversions I think are handy..

http://www.callabsolutions.com/wp-content/uploads/2017/08/Calibration-Is-Progress-Sign.pdf
Title: Re: How to convert Newton to PSI
Post by: USMC kalibrater on 12-06-2012 -- 04:07:44
Making the assumption that the ram is round you first have to find the area of the ram
Rarea=Pi(r2)
Knowing the area of the ram you can complete the formula  Pressure=Force/area
Force = Mass* accelleration of gravity
So now you can convert the mass, area and use the correct acc of gravity convert accurately between PSI & Newtons. 
Since the pressure in the system remains constant changing the area of the output piston changes the force the system is generating at the output. So with that said we go back to P=F2 / Area2 which can be changed to F2=P*Area2 ...sooooo since the pressure in the system will remain the same you can find the second force by completing
F1=P/Area1
With respect to the image at this link
http://www.hydraulicmania.com/hydraulic_press.htm (http://www.hydraulicmania.com/hydraulic_press.htm)
Hope this helps!

J
Title: Re: How to convert Newton to PSI
Post by: USMC kalibrater on 12-06-2012 -- 05:00:24
Oh and just because I had to explain this to someone the other day
grams are mass
pounds are force
This is really important to remember when working with pressure systems....
Title: Re: How to convert Newton to PSI
Post by: John Treekiller on 12-06-2012 -- 05:41:12
I always use the site http://www.onlineconversion.com/ whenever I have to convert something.  I checked and they do have a Force conversion of Newtons to Pounds of Force and others too numerous to mention.  Didn't see a direct conversion to psi but it may be in there somewhere.  John Treekiller
Title: Re: How to convert Newton to PSI
Post by: jimmyc on 12-06-2012 -- 07:50:43
http://www.translatorscafe.com/cafe/units-converter/pressure/calculator/newton-per-square-meter-[N/m%5E2]-to-psi-[psi]/  this one is pretty cool, i convertered newt to psi
Title: Re: How to convert Newton to PSI
Post by: jeroboambramblejam on 12-06-2012 -- 10:14:35
... newt pie...
And then there's always The Wolfram:
http://www.wolframalpha.com/