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<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">Hi Rick,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">C4F8 isn't very sensitive to temperature swings in range that you've listed, so you won't get much insulating the panel. What is the regulator doing? If you're seeing a
rise in the downstream pressure, you could have contamination on the seat. If the flow rate is fluctuating, the regulator may be undersized.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:6.0pt"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">Let's focus on the regulator and your system requirements.
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-bottom:6.0pt;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">What is the part number on the regulator? Tescom scribes this into the body, either next to the inlet or outlet fitting, or on the bottom.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-bottom:6.0pt;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">What is your bottle pressure?<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-bottom:6.0pt;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">What is the required delivery pressure?<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-bottom:6.0pt;text-indent:-.25in;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">What is the desired flow rate?<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><span style="mso-list:Ignore">5.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">Do you have an excess flow switch on the panel? If so, what is the part number?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">The age of the panel isn't a concern. As long as you're keeping the gas clean and employing proper cylinder change procedures, that panel will last you for the life of
the system. We might play 20 questions here to get this figured out, but this will be a good start.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">Best to you sir!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D">Tom<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#244061">Tom Britton</span><span style="font-family:"Times New Roman","serif";color:#244061"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#244061">Director of Sales</span><span style="font-family:"Times New Roman","serif";color:#244061"><o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:14.0pt;font-family:"Arial Narrow","sans-serif";color:#244061">Critical Systems, Inc.</span></i><span style="font-size:14.0pt;color:#244061"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#244061">Direct: 208-890-1417<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#244061">Office: 877-572-5515<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#1F497D"><a href="http://www.criticalsystemsinc.com/"><i><span style="font-family:"Arial Narrow","sans-serif"">www.CriticalSystemsInc.com</span></i></a></span><i><u><span style="font-size:12.0pt;font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p></o:p></span></u></i></p>
<p class="MsoNormal"><i><u><span style="font-size:4.0pt;font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p><span style="text-decoration:none"> </span></o:p></span></u></i></p>
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<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial Narrow","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu]
<b>On Behalf Of </b>Morrison, Richard H., Jr.<br>
<b>Sent:</b> Thursday, July 17, 2014 6:42 AM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] regulator question<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My gas room has no temperature control and I am having delivery problems with C4F8 tank. I have a Tescom-100 regulator on the bottle (part of a gas panel 6+ years old). My question is should I wrap the tank with a blanket to keep it constant
temperature? I have this issue when there are large temperature swings outside my gas room is 70F +-8F<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is the regulator I am using the proper one? Any suggestions are welcome.<o:p></o:p></p>
<p class="MsoNormal"><br>
Rick<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Draper Laboratory<o:p></o:p></p>
<p class="MsoNormal">Principal Member of the Technical Staff<o:p></o:p></p>
<p class="MsoNormal">Group Leader Microfabrication Operations<o:p></o:p></p>
<p class="MsoNormal">555 Technology Square<o:p></o:p></p>
<p class="MsoNormal">Cambridge Ma, 02139-3563<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="http://www.draper.com">www.draper.com</a><o:p></o:p></p>
<p class="MsoNormal"><a href="mailto:rmorrison@draper.com">rmorrison@draper.com</a><o:p></o:p></p>
<p class="MsoNormal">W 617-258-3420<o:p></o:p></p>
<p class="MsoNormal">C 508-930-3461<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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