<div dir='auto'><div>PDT208 is working fine, the connection is good. I verified connection and connected it to chassis. Its showing quite reasonable reading also.<div dir="auto"><br></div><div dir="auto">PDT332( RTPC-DMS diff) is showing some weird number in epics GUI even before its connected to system. Cable from transducer is attached at chassis. How? I have no idea.( see attached) I think it should show zero. I compare PDT208(rtpc-buffer) reading removing cable from chassis, and it shows zero.</div><div dir="auto"><br></div><div dir="auto">In addition, Connecting wires at transducer PDT332 are coming out. So we need color code of cables before connecting it.</div><div dir="auto"><br></div><div dir="auto">Thank you,</div><div dir="auto">Jiwan</div><div dir="auto"><br></div><br><div class="gmail_extra"><br><div class="gmail_quote">On Jul 27, 2020 19:18, jpoudel@jlab.org wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">Hello Marc,<div dir="auto"><br></div><div dir="auto">Can you please send me the connection of PDT 332 (color code of cables) also?</div><div dir="auto"><br></div><div dir="auto">In PDT 208, white and green are together. Are they -15V? </div><div dir="auto"><br></div><div dir="auto">Thank you,</div><div dir="auto">Jiwan</div></div><div><br><div class="elided-text">On Jul 27, 2020 18:40, JIWAN POUDEL <jpoud001@odu.edu> wrote:<br type="attribution"><blockquote style="margin:0 0 0 0.8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">I will check the connections and verify it is correct before plugging in to chassis.<div><br></div><div>Thank you,</div><div>Jiwan<br><div><br><blockquote><div>On Jul 27, 2020, at 6:22 PM, <a href="mailto:mhattawy@odu.edu">mhattawy@odu.edu</a> <<a href="mailto:mohammad.hattawy@gmail.com">mohammad.hattawy@gmail.com</a>> wrote:</div><br><div><div><div dir="auto">Thanks Marc, </div></div><div dir="auto"> Maybe the beacon was on, but for sure the magnets are off. Unfortunately, I can’t get to the Lab till Wednesday. Jiwan can you connect it back?</div><div dir="auto"><br></div><div dir="auto">Mohammad</div><div><br><div class="elided-text"><div dir="ltr">On Mon, Jul 27, 2020 at 18:18 Marc Mcmullen <<a href="mailto:mcmullen@jlab.org">mcmullen@jlab.org</a>> wrote:<br></div><blockquote style="margin:0 0 0 0.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Hi Mohammad and Jiwan,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
I have replaced the fuse in the chassis and checked the internal components for issues. I did not reconnect the connector for the PDT 208 (differential pressure DMS to RTPC) because I could not verify if the contacts are wired correctly since it was reconnected,
because the magnet beacon is on. I have attached a pinout which can be used to verify connections prior to plugging it back into the interface chassis.</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Regards,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Marc<br>
</div>
<div></div>
<hr style="display:inline-block;width:98%">
<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Marc Mcmullen <<a href="mailto:mcmullen@jlab.org">mcmullen@jlab.org</a>><br>
<b>Sent:</b> Friday, July 24, 2020 11:18 AM</font></div></div><div dir="ltr"><div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><br>
<b>To:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Subject:</b> Re: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC</font>
<div> </div>
</div>
<div dir="ltr">
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Thanks Mohammad,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
I'll look into the spares first. Then contact you about the repair.</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Regards,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Marc<br>
</div>
<div></div>
<hr style="display:inline-block;width:98%">
<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org">dsg-hallb_rtpc-bounces@jlab.org</a>> on behalf of <a href="mailto:mhattawy@odu.edu">mhattawy@odu.edu</a> <<a href="mailto:mohammad.hattawy@gmail.com">mohammad.hattawy@gmail.com</a>><br>
<b>Sent:</b> Friday, July 24, 2020 11:16 AM<br>
<b>To:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Subject:</b> Re: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC</font>
<div> </div>
</div>
<div>
<div>
<div dir="auto">Hello Marc, </div>
</div>
<div dir="auto"> The magnets will be energized starting from 3:30 pm today to Monday morning. You won’t be able to get to the gas panel, that is within the fields of the magnets. </div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Mohammad</div>
<div><br>
<div>
<div dir="ltr">On Fri, Jul 24, 2020 at 11:11 Marc Mcmullen <<a href="mailto:mcmullen@jlab.org">mcmullen@jlab.org</a>> wrote:<br>
</div>
<blockquote style="margin:0 0 0 0.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Hi Jiwan,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
I am going to see if we have some spare supplies for that chassis. When I have the swap out in hand, I'll need to coordinate with your group to complete the repair.</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
The chassis will have to be de-energized and removed from the rack for repair. This means the MFC and the other connected sensors will have to be shut down while I make the repairs.
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Additionally, I will be doing this work either on the weekend or after hours, to avoid coming into contact with others.</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
I'll let you know the status of the spares sometime today, so we can coordinate the system outage.</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Regards,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Marc<br>
</div>
<div></div>
<hr style="display:inline-block;width:98%">
<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org">dsg-hallb_rtpc-bounces@jlab.org</a>>
on behalf of Jiwan Poudel <<a href="mailto:jpoudel@jlab.org">jpoudel@jlab.org</a>><br>
<b>Sent:</b> Friday, July 24, 2020 9:33 AM<br>
<b>To:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Subject:</b> Re: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC</font>
<div> </div>
</div>
</div>
<div dir="ltr">
<div style="word-wrap:break-word">Hello Brian,
<div><br>
</div>
<div>Those power pins are not showing what it should show. Pin 6 and 5 showing -28.7V and pins 7 and 5 showing only 1.3V.</div>
<div><br>
</div>
<div>Thank you,</div>
<div>Jiwan<br>
<div><br>
<blockquote>
<div>On Jul 23, 2020, at 2:29 PM, Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>> wrote:</div>
<br>
<div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Thanks Mohammad,</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Fortunately it already has the pinout on it.</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Unplug that connector and measure between pins 6 & 5 for -15 VDC, 7 & 5 for +15 VDC. If those are good then it isn't power.</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Next open the backshell of that connector and connect probes to 2 & 12 to see if it is reading the same voltage as the cRIO (~4 VDC). If the reading at the sensor matches the cRIO it probably isn't the cabling.</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
Lastly I would disconnect the detector and open the valves so that sensor is exposed to ambient pressure and see what it reads, if it's still ~400 torr then it is most likely the sensor, but could be the cabling/chassis.</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
To eliminate that possibility the sensor would need to be removed and tested on a bench using the same pins as listed above.</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
<br>
</div>
<div style="font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">
I don't think we (DSG) have a direct replacement for that, so I'd try Hall B and if not you'd need to talk with Bob as that involves changing a pressure system component.</div>
<div style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none">
<div></div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt"><br>
</div>
<hr style="display:inline-block;width:624.25px">
<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org">dsg-hallb_rtpc-bounces@jlab.org</a>>
on behalf of <a href="mailto:mhattawy@odu.edu">mhattawy@odu.edu</a> <<a href="mailto:mohammad.hattawy@gmail.com">mohammad.hattawy@gmail.com</a>><br>
<b>Sent:</b> Thursday, July 23, 2020 1:21 PM<br>
<b>To:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Subject:</b> [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC</font>
<div> </div>
</div>
<div>
<div>
<div><image_123923953.JPG></div>
<div><image_123923953.JPG></div>
<div><image_6483441.JPG></div>
<br>
</div>
<div><br>
<div>
<div dir="ltr">On Thu, Jul 23, 2020 at 12:38 Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>> wrote:<br>
</div>
<blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb( 204 , 204 , 204 );padding-left:1ex">
<div dir="ltr">
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">Hi Jiwan,</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt"><br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">The voltage being read back by the cRIO is ~4V which is being converted correctly to ~400 torr.</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt"><br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">Can you get the full model number of PT334 so I can better give some suggestions on what you guys could measure to help troubleshoot?</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt"><br>
</div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">Off-hand some of the things that could be wrong is: the sensor not getting proper supply voltage, a loose connection of the output to the cRIO as it is getting some voltage back, or
a bad sensor (let's hope it isn't that as that was the only one we had in that range).</div>
<div>
<div></div>
<div style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt"><br>
</div>
<hr style="display:inline-block;width:612.21875px">
<div dir="ltr">
<font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Jiwan Poudel <<a href="mailto:jpoudel@jlab.org">jpoudel@jlab.org</a>><br>
<b>Sent:</b> Thursday, July 23, 2020 11:20 AM<br>
<b>To:</b> Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>><br>
<b>Cc:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Subject:</b> Pressure transducer of RTPC</font>
<div> </div>
</div>
</div>
</div>
<div dir="ltr">
<div>
<div style="word-wrap:break-word">
<div>Hello Brian,</div>
<div><br>
</div>
<div>RTPC abs. Pressure transducer seems not working properly. This should show around 760 torr (~ 1 atm), but showing about 400 torr only. What could be the reason?</div>
<div><br>
</div>
<div>Thank you,</div>
<div>Jiwan</div>
<div><br>
</div>
<img src="https://logbooks.jlab.org/files/2020/07/3815911/clonsl2_20200722_081248.gif">
<div><br>
</div>
</div>
</div>
</div>
_______________________________________________<br>
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</blockquote>
</div>
</div>
-- <br>
<div dir="ltr">Best regards,<br>
Mohammad Hattawy.<br>
</div>
</div>
</div>
<span style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;float:none;display:inline !important">_______________________________________________</span><br style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none">
<span style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;float:none;display:inline !important">dsg-hallb_rtpc
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<a href="mailto:dsg-hallb_rtpc@jlab.org" style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">dsg-hallb_rtpc@jlab.org</a><br style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none">
<a href="https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc" style="font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc</a></div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
_______________________________________________<br>
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</blockquote>
</div>
</div>
-- <br>
<div dir="ltr">Best regards,<br>
Mohammad Hattawy.<br>
</div>
</div>
</div>
</div>
_______________________________________________<br>
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<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a><br>
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</blockquote></div></div>-- <br><div dir="ltr" data-smartmail="gmail_signature">Best regards,<br>Mohammad Hattawy.<br></div>
_______________________________________________<br>dsg-hallb_rtpc mailing list<br><a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a><br>https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc<br></div></blockquote></div><br></div></div></blockquote></div><br></div></blockquote></div><br></div></div></div>