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<p>FYI</p>
<p>We don't have spares for Proteus Industries sensors or the
Florite 990x Controller.</p>
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<td>Re: [dsg-svt] SVT trip</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Tue, 31 Jan 2017 08:58:29 -0500</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Peter Bonneau <a class="moz-txt-link-rfc2396E" href="mailto:bonneau@jlab.org"><bonneau@jlab.org></a></td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:dsg-svt@jlab.org">dsg-svt@jlab.org</a></td>
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<p>There is instability in the SVT coolant temperature signal.<br>
</p>
<p>This instability is shown on the two attached Mya data-logger
charts from yesterday.</p>
<p>Chart #2 shows the temp dropping suddenly to -25C then back to
normal in less than 2 minutes.</p>
<p>The signal originates at the Proteus Industries sensor on the
chiller line and is then connected to the Florite 990x
Controller.</p>
<p>The controller outputs an analog voltage which is sent to EPICS
and the Hardware Interlock System.</p>
<p>The -25C temperature is equivalent to zero volts (open) on the
ADC.<br>
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<div class="moz-cite-prefix">On 1/30/2017 5:54 PM, Brian Eng
wrote:<br>
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<blockquote
cite="mid:838901285.6553655.1485816841936.JavaMail.zimbra@jlab.org"
type="cite">
<pre wrap="">Attached are the windows with the errors from the various screens.
The coolant temp trip on the crio (both high and low) is the one that sticks out since that basically should never trip.
In the process of powering back on now.
----- Original Message -----
</pre>
<blockquote type="cite">
<pre wrap="">From: "Brian Eng" <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:beng@jlab.org"><beng@jlab.org></a>
To: "Yuri Gotra" <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:gotra@jlab.org"><gotra@jlab.org></a>
Sent: Monday, January 30, 2017 5:38:59 PM
Subject: Re: SVT trip
</pre>
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<blockquote type="cite">
<pre wrap="">Ok, checking now.
</pre>
<blockquote type="cite">
<pre wrap="">On Jan 30, 2017, at 5:33 PM, Yuri Gotra <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:gotra@jlab.org"><gotra@jlab.org></a> wrote:
Brian,
If you are still at the lab, could you please check the cause of the trip and
power back the SVT. Thank you
<gotra.vcf>
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