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Just so everyone is on the same page...</div>
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I'm working on changes to the program to have the temperature and pressure directly from the chillers trigger an interlock instead of the external flow meters.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Julie Roche <jroche@jlab.org><br>
<b>Sent:</b> Wednesday, October 11, 2023 11:54 AM<br>
<b>To:</b> Aaron Brown <ambrown@jlab.org>; Carlos Munoz Camacho <munoz@jlab.org><br>
<b>Cc:</b> William Henry <wmhenry@jlab.org><br>
<b>Subject:</b> Re: chiller interlock question</font>
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<p class="x_MsoNormal">I agree to it.</p>
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<p class="x_MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt; color:black">From:
</span></b><span style="font-size:12.0pt; color:black">Aaron Brown <ambrown@jlab.org><br>
<b>Date: </b>Wednesday, October 11, 2023 at 11:53 AM<br>
<b>To: </b>Carlos Munoz Camacho <munoz@jlab.org><br>
<b>Cc: </b>Julie Roche <jroche@jlab.org>, William Henry <wmhenry@jlab.org><br>
<b>Subject: </b>Re: chiller interlock question</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Hi Carlos,</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">If everyone agrees, I can go ahead and start making those changes.</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">-- Aaron</span></p>
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<p class="x_MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Carlos Munoz Camacho <munoz@jlab.org><br>
<b>Sent:</b> Wednesday, October 11, 2023 11:39 AM<br>
<b>To:</b> Aaron Brown <ambrown@jlab.org><br>
<b>Cc:</b> Julie Roche <jroche@jlab.org>; William Henry <wmhenry@jlab.org><br>
<b>Subject:</b> Re: chiller interlock question</span> </p>
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<p class="x_MsoNormal">Hi Aaron, </p>
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<p class="x_MsoNormal"> I agree, the chiller values seem to be reliable (that means that we should put those in the alarm handler, too). I would still keep the delay to trip the HV relatively large (~30min) to give the crew time to figure out if there is
a real problem (unlikely) or a false alarm. We could have a yellow alarm in the alarm handler with a safer threshold than the one trips the calorimeter HV.</p>
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<p class="x_MsoNormal">Thanks,</p>
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<p class="x_MsoNormal">Carlos</p>
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<p class="x_MsoNormal">On Wed, Oct 11, 2023 at 5:31 PM Aaron Brown <<a href="mailto:ambrown@jlab.org">ambrown@jlab.org</a>> wrote:</p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Hi Julie et al.,</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">I'm working on the code to try and ensure that the chillers doesn't cause an hv interlock due to "weird" values (false alarms).</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Would you prefer to have the external flow meters trigger the interlock (current version of the code has the temperature and pressure from the flow meters able to trigger an interlock), or would
you rather use the readback temperature and pressure directly from the chiller.</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">My vote is for the values directly from the chillers as those haven't shown the same tendency to return "weird" values as often.</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">What do you think?</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Best,</span></p>
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<p class="x_MsoNormal"><span style="font-size:12.0pt; color:black">Aaron</span></p>
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