<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi Krister Etal,<br>
On the buffer dewar we also use a temperature signal to help to keep
the line cold. I do not know if the IBC has a temperature signal in
the flow path of the 4k pot that might be used. but if it does we
can set up a cascading PID to keep the supply valve minimum position
high enough to assure the u-tube stays cold.<br>
I'm happy to meet with you, Andy and Chris to implement this feature
if there is a signal that can be used.<br>
<br>
Dave<br>
<br>
<br>
On 4/24/2012 5:05 PM, Krister Bruhwel wrote:
<blockquote cite="mid:4F9715AC.3080504@jlab.org" type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
Hello,<br>
<br>
Chris Bass and I installed the hardwired HDice He level signal
today.<br>
<br>
Here is the EPICS signal: "hdice:mainbathLL"<br>
<br>
I have put into the time histories under the "HD Ice IBC" group as
"He Bath Level Hard Wired" and its updating as it should thus
far. <br>
<br>
Let me know about alarms and whatever else one might want with
this signal.<br>
<br>
<img src="cid:part1.00070200.04030306@jlab.org" alt=""> <br>
<br>
clasrun@clon01:clasrun>caget hdice:mainbathLL<br>
hdice:mainbathLL 72.6482<br>
<br>
<br>
Regards,<br>
Krister<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Hallb-engineering mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Hallb-engineering@jlab.org">Hallb-engineering@jlab.org</a>
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/hallb-engineering">https://mailman.jlab.org/mailman/listinfo/hallb-engineering</a></pre>
</blockquote>
</body>
</html>