Experimental Physics and
Industrial Control System

Josh Stein <[email protected]> · Thu, 02 Feb 2006 14:15:39 -0600

Hey Mark,
 The Keithly 2700 looks like the ticket. The other solutions may be a
bit more 'techy' but I'm aiming for COTS as much as possible. It also
appears that Keithly is offering an 40 channel module with cold junction
compensation now - I'll look into that one. What rates are you able to
scan this beast at? I imagine it is hardware bound.
Thanks,
<josh>
Mark Rivers wrote:
Hi Josh,
In synApps we support the Keithley 2700. Each of those units takes 2 cards for a total of 40 thermocouples. It costs about $2K, so $50 per thermocouple. It can be extended with external multiplexors, but EPICS support would need to be written for those.
Mark

________________________________
From: Josh Stein [mailto:[email protected]]
Sent: Thu 1/19/2006 9:03 AM
To: TechTalk EPICS
Subject: Cost effective solution for monitoring a large number of temperatures

Controls experts,
 In the undulator hall of the LCLS we expect to monitor (what I
consider) a large number of temperature points (on the order of about
300). My past experience with thermocouples has been local installations
of between one and eight data points. It would be easy to just scale
that solution by a factor of 40, but I have to believe there are more
cost effective solutions.
 Can anyone with experience in this regard please point me in the right
direction? I'm looking for hardware that is, of course, EPICS compliant.
Thanks,
<josh>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System