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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