function refSteam()
{
return "\
<p>Reference: Richard W. Miller's <u>Flow Measurement Engineering Handbook</u> - Third Edition<br />\
<img src='images/orifice.png' ALT='Reference' border='0'><br />\
d = F<sub>ad</sub>d<sub>measure</sub> = [1 + &alpha;<sub>pe</sub>(T<sub>F</sub> - 68)]d<sub>measure</sub> (Eq. 9.51)<br />\
D = F<sub>aD</sub>D<sub>measure</sub> = [1 + &alpha;<sub>pe</sub>(T<sub>F</sub> - 68)]D<sub>measure</sub> (Eq. 9.50)<br />\
S<sub>M</sub> = q<sub>M</sub>/(N<sub>Mp</sub>D<sup>2</sup>sqrt(&rho;<sub>f</sub>)sqrt(h<sub>w</sub>)) (Table 9.23)<br />\
R<sub>D</sub> = [2266.97(1/(&mu;<sub>cP</sub>DN<sub>Mp</sub>)]q<sub>M</sub> (Table 9.20)<br />\
 &beta;<sub>0</sub> = [1 + (0.6/S<sub>M</sub> + 0.06)<sup>2</sup>]<sup>-1/4</sup> for R<sub>D</sub> &lt; 200,000 (Table 9.28)<br />\
&beta;<sub>0</sub> = [1 + (0.6/S<sub>M</sub>)<sup>2</sup>]<sup>-1/4</sup> for R<sub>D</sub> &gt; 200,000  (Table 9.28)<br />\
d<sub>measure</sub>= (&beta;D)/F<sub>ad</sub> (Eq. 9.51)\
</p>\
<p>\
<p><em>List of Symbols:</em></p>\
&alpha;<sub>p</sub>: coefficient of thermal expansion for pipe material in in/(in <sup>o</sup>F)<br />\
&alpha;<sub>pe</sub>: coefficient of thermal expansion for primary element material in in/(in <sup>o</sup>F)<br />\
&beta;<sub>0</sub>: beta approximation<br />\
&beta;: beta ratio<br />\
D: pipe internal diameter (ID) at flowing conditions<br />\
D<sub>measure</sub>: normal pipe ID as measured at ambient conditions<br />\
d: primary element bore at flowing conditions<br />\
d<sub>measure</sub>: primary element bore measured at ambient conditions<br />\
F<sub>aD</sub>: pipe thermal expansion factor<br />\
F<sub>ad</sub>: orifice thermal expansion factor<br />\
h<sub>w</sub>: differential pressure in inches of water at 68<sup>o</sup> F, 14.7 PSIA<br />\
&mu;<sub>cP</sub>: absolute viscosity in centipoises<br />\
N<sub>Mp</sub>: N factor for mass flow with density determination, liquids and gases (vapors)<br />\
&rho;<sub>f</sub>: Density at flowing conditions<br />\
q<sub>M</sub>: mass flow rate where <sub>M</sub> is units<br />\
R<sub>D</sub>: Reynolds number\
</p>";
}