KPA to PSI conversion table / chart Accuracy ??

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Old Jun 26, 2008 | 12:50 PM
  #1  
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Default KPA to PSI conversion table / chart Accuracy ??

here is a KPA to PSI conversion table or chart

does anyone know how accurate this is ? thanks


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Old Jun 26, 2008 | 12:55 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

why doesnt this thread come up in google search ?
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Old Jun 26, 2008 | 12:57 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

i dont think any of that is right, unless those are the numbers above atmosperic pressure. for example 100kpa = 14.5038psi which is just under 1atm (14.70psi)

what is that chart for?
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Old Jun 26, 2008 | 12:59 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

why shouldnt it be?
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Old Jun 26, 2008 | 01:04 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

Looks right to me.
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Old Jun 26, 2008 | 01:18 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (tony1)

i bet the chart is for tire pressure?
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Old Jun 26, 2008 | 01:21 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (dpetro1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dpetro1 &raquo;</TD></TR><TR><TD CLASS="quote">i dont think any of that is right, unless those are the numbers above atmosperic pressure. for example 100kpa = 14.5038psi which is just under 1atm (14.70psi)

what is that chart for?</TD></TR></TABLE>

the way the engine management system we use reads, it will read 100 kpa with the engine off or 0 vacum

the chart is for reference
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Old Jun 26, 2008 | 01:36 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

its right
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Old Jun 26, 2008 | 08:54 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

The problem is that he apparently wants it to reference his pressure gauge to the sheet for a car, not strictly absolute pressure reference.

I have to point out the sheet is wrong. On a gauge, 1atm~14.7psi~101kpa. So I think at 300kpa (200kpa above atm), you'd have 29.2psi on the gauge (14.5+14.7psi). At 500kpa (400kpa above atm), I think its 58.2psi. The main issue is using absolute and gauge pressure scales. I think that scale ended up using 14.7psi as 100kpa equiv, not 14.5psi, due to 1 atm being 14.7psi.

I've always hated going using gauge measurements, I prefer absolute. Thats why I sorta like kPa more now.
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Old Jun 26, 2008 | 10:50 PM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (HiProfile)

seems a bit off.

101.3kpa=14.7psia/0psig
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Old Jun 27, 2008 | 03:09 AM
  #11  
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (wHOAlly)

its close though, eh ? it seems some of the digits are upping by .8 and some by .7,

when i look for conversion formula's 1psi =6.8948 kpa = 0.06805 atm, using that logic, would mean the conversion table should be off by a good bit ?

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google search #3

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Old Jun 27, 2008 | 11:21 AM
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Default Re: KPA to PSI conversion table / chart Accuracy ?? (DaveF)

beolingus

good conversion website...use it at work all the time
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Old Jun 27, 2008 | 03:49 PM
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Default

100mbar = 10kpa

In google, in the search engine type "X mbar to psi" and it will convert whatever you need. Then just divide by 10. If you need to reference it to a gauge pressure, just subtract it from 101.35kpa. Negative will be vacuum and positive will be positive(obviously).
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