[Dsg-rtpc] [EXTERNAL] RTDs in RTPC3

[JIWAN POUDEL]

Thank you Marc.

> On Mar 17, 2020, at 12:58 PM, Marc Mcmullen <mcmullen at jlab.org> wrote:
> 
> Hi Jiwan,
> 
> I have put a kit together and left it in the RTPC area in the EEL building. The kit is in a cardboard box on the back table in room 125 of the EEL (the RTPC area). The kit has all the materials needed to extend your RTD cables (4 wire RTD cable spool, multiple heat shrink sizes, solder, a soldering Iron, and a heat gun). In accordance with current conditions you may wish to wipe all the material, tools down before use. Here are the assembly instructions:
> 
>  
> 
> Disconnect the RTDs from the RTPC cRIO by unplugging the disconnect cables at the RTPC end of the cable assembly.
> Cut both RTD wires on the RTPC side of the disconnect cable. Leave at least 1 to 1.5’ of length on the disconnect side.
> Cut the jumper length from the spool as needed.
> Slide 2 pieces of the large heat shrink over the jacket of the New Jumper Section. The heat shrink should be long enough to cover the stripped back sections and solder joints + 0.5”. You will need 2 sets of these, since there are 2 cables.
> Strip back ~ 0.75” of the jacket of all cut cable ends to expose the 4 individual wires at each cut end.
> Add a short section (long enough to fully cover the solder joint and a little bit of jacket) of the smaller heat shrink to each of the individual conductors.
> Strip back a tiny section (< 0.25”) of all individual conductors (16 ct. per cable assembly) and solder per the provided diagram.
> Connect like colors (red to red, black to black)
> After soldering all individual wires together as appropriate, slide the small heat shrink over the solder joint. DO NOT HEAT THE HEAT SHRINK AT THIS TIME.
> Reconnect the disconnect connectors and check the temperature indicators on the RTPC Gas Display screen to ensure the cable is connected properly. Re-check the joint as needed.
> After the connection is verified, all the small heat shrink can be heated and the large heat shrink can be moved into place and heated.
> Please feel free to email us if you have any questions.
> 
>  
> 
> Marc
> 
> 
> From: JIWAN POUDEL <jpoud001 at odu.edu>
> Sent: Tuesday, March 17, 2020 8:45 AM
> To: Marc Mcmullen <mcmullen at jlab.org>
> Cc: Brian Eng <beng at jlab.org>; dsg-rtpc at jlab.org <dsg-rtpc at jlab.org>; Eric Christy <christy at jlab.org>
> Subject: Re: [EXTERNAL] RTDs in RTPC3
>  
> Dear Marc,
> 
> To get out from CVT cart we need about 2m cables. We also need 2 such, as we have two RTDs which should come out of CVT cart. From there to the CPU, we have cable from Rtpc1 which can be reused. 
> 
> Thank you,
> Jiwan
> 
> 
> On Tue, Mar 17, 2020, 08:34 Marc Mcmullen <mcmullen at jlab.org <mailto:mcmullen at jlab.org>> wrote:
> Good Morning Jiwan,
> 
> As you are aware the Lab has started MEDCON 5, which requires us to work from home. So I will forward your request to the mailing list and contact the DSG manager for guidance. Essentially, you need 2 of the 4 wire RTD cables to be extended. How long do you need these cables to be? In the future, please send work requests directly to the dsg-rtpc mailing list to ensure a wide distribution of the request to the entire DSG.
> 
> Regards,
> Marc
> From: JIWAN POUDEL <jpoud001 at odu.edu <mailto:jpoud001 at odu.edu>>
> Sent: Tuesday, March 17, 2020 8:22 AM
> To: Brian Eng <beng at jlab.org <mailto:beng at jlab.org>>; Marc Mcmullen <mcmullen at jlab.org <mailto:mcmullen at jlab.org>>
> Cc: Eric Christy <christy at jlab.org <mailto:christy at jlab.org>>
> Subject: [EXTERNAL] RTDs in RTPC3
>  
> Dear Brian and Marc,
> 
> We are in the process of replacing Rtpc1 by rtpc3. We decabled Rtpc1 yesterday and ready to put rtpc3 on cvt cart. There is survey for target from 9am to 1pm today, then we will start cabling the RTPC in the afternoon. Could you please help us to extend the RTD cables out from CVT cart? The cables are not long enough and also have no connectors to extend. It is also hard to access RTDs after re-cabling. So we need to fix this before cabling is done.
> 
> Thank you,
> Jiwan
> <RTPC RTD cable modification.pdf>_______________________________________________
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