Jesse,
    I don't know why a calibration manual would be so far off but STP is
defined as 273.15K which is freezing temp of H2O (0C or 32F).  Pressure is
1.013x10^5 Pa or 1 ATM.  This is the standard used in all Physics text.  I
double checked it to make sure Snow & Shull Physics text page 374 and index
(both agree on same values).  Hope this clears up some of the confusion.
Jimbo

Jesse Armantrout wrote:

> it gets worse... on Page 1074 of the Process Control book by Liptak,
> Standard conditions, as in standard cubic feet, is defined as 14.73 psia
> and 60 deg. F.  Page 978 of the Process Measurement book by Liptak shows
> Standard conditions as in standard cuft to be at 70 deg f.
>
> Now, the other REAL bible of instrumentation, the Crane manual, shows
> uniformly 60 f and 14.7 psi, as does the third bible, the Fisher Control
> Valves handbook.
>
> Finally, STP, standard temperature and pressure are indeed 0 deg. c and
> 14.6959 psi, but that is not the "standard" refered to in the original
> question.
>
> I hope that makes everything crystal clear.
>
> Trout
>
> ----------
> > From: Jesse Armantrout <armantrout@wo*.at*.ne*>
> > To: Sean T. Stevenson <ststev@un*.co*>; techdiver
> <techdiver@aquanaut.com>
> > Subject: Re: weight of air
> > Date: Tuesday, February 09, 1999 10:46 AM
> >
> > ok, I have the Liptak* book in hand, so there will be no arguement.
> >
> > Standard conditions, as in Standard Cubic feet per hour, or scfh are 14.7
> > psia and 60 deg f (not 70, as I incorrectly stated earlier)
> >
> > The metric equivalent, normal conditions or normalized conditions, as in
> > Normal Cubic meters per hour, or NM3/h is 760 mm Hg and ) deg C.
> >
> > Trout
> >
> > *Liptak books are the bibles of instrumentation
> >
> > ----------
> > > From: Sean T. Stevenson <ststev@un*.co*>
> > > To: techdiver <techdiver@aquanaut.com>
> > > Subject: weight of air
> > > Date: Tuesday, February 09, 1999 10:12 AM
> > >
> > > All of the temperatures quotes for STP thus far have been in error.
> > > Temperatures approximating room temp. are commonly known as NTP, or
> > > normal temperature and pressure.  STP (standard temperature and
> > > pressure) is zero degrees Celcius, 32 degrees Farenheit, or 273.15
> > > Kelvins.  Pressure is 1 ATM.
> > >
> > > -Sean
> > >
> > >
> > >
> > >
> > > --
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