<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello Brian,<div class=""><br class=""></div><div class="">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 class=""><br class=""></div><div class="">Thank you,</div><div class="">Jiwan<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jul 23, 2020, at 2:29 PM, Brian Eng <<a href="mailto:beng@jlab.org" class="">beng@jlab.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Thanks Mohammad,</div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Fortunately it already has the pinout on it.</div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><div id="appendonsend" class=""></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><hr tabindex="-1" style="display: inline-block; width: 624.25px;" class=""><div id="divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org" class="">dsg-hallb_rtpc-bounces@jlab.org</a>> on behalf of <a href="mailto:mhattawy@odu.edu" class="">mhattawy@odu.edu</a> <<a href="mailto:mohammad.hattawy@gmail.com" class="">mohammad.hattawy@gmail.com</a>><br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, July 23, 2020 1:21 PM<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span><a href="mailto:dsg-hallb_rtpc@jlab.org" class="">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org" class="">dsg-hallb_rtpc@jlab.org</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>[dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC</font><div class=""> </div></div><div class=""><div class=""><div class=""><span id="cid:1737cb15d8cc7597e591"><image_123923953.JPG></span></div><div class=""><span id="cid:1737cb192cac7597e592"><image_123923953.JPG></span></div><div class=""><span id="cid:1737cb1d463207cf5f03"><image_6483441.JPG></span></div><br class=""></div><div class=""><br class=""><div class="x_gmail_quote"><div dir="ltr" class="x_gmail_attr">On Thu, Jul 23, 2020 at 12:38 Brian Eng <<a href="mailto:beng@jlab.org" class="">beng@jlab.org</a>> wrote:<br class=""></div><blockquote class="x_gmail_quote" 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" class=""><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">Hi Jiwan,</div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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;" class=""><br class=""></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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;" class=""><br class=""></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class="">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 class=""><div id="x_m_-3673964264327518911appendonsend" class=""></div><div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;" class=""><br class=""></div><hr style="display: inline-block; width: 612.21875px;" class=""><div id="x_m_-3673964264327518911divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Jiwan Poudel <<a href="mailto:jpoudel@jlab.org" target="_blank" class="">jpoudel@jlab.org</a>><br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>Thursday, July 23, 2020 11:20 AM<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span>Brian Eng <<a href="mailto:beng@jlab.org" target="_blank" class="">beng@jlab.org</a>><br class=""><b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:dsg-hallb_rtpc@jlab.org" target="_blank" class="">dsg-hallb_rtpc@jlab.org</a><span class="Apple-converted-space"> </span><<a href="mailto:dsg-hallb_rtpc@jlab.org" target="_blank" class="">dsg-hallb_rtpc@jlab.org</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>Pressure transducer of RTPC</font><div class=""> </div></div></div></div><div dir="ltr" class=""><div class=""><div style="word-wrap: break-word; line-break: after-white-space;" class=""><div class="">Hello Brian,</div><div class=""><br class=""></div><div class="">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 class=""><br class=""></div><div class="">Thank you,</div><div class="">Jiwan</div><div class=""><br class=""></div><img src="https://logbooks.jlab.org/files/2020/07/3815911/clonsl2_20200722_081248.gif" class=""><div class=""><br class=""></div></div></div></div>_______________________________________________<br class="">dsg-hallb_rtpc mailing list<br class=""><a href="mailto:dsg-hallb_rtpc@jlab.org" target="_blank" class="">dsg-hallb_rtpc@jlab.org</a><br class=""><a href="https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc" rel="noreferrer" target="_blank" class="">https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc</a><br class=""></blockquote></div></div>--<span class="Apple-converted-space"> </span><br class=""><div dir="ltr" class="x_gmail_signature">Best regards,<br class="">Mohammad Hattawy.<br class=""></div></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">dsg-hallb_rtpc mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="mailto:dsg-hallb_rtpc@jlab.org" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">dsg-hallb_rtpc@jlab.org</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc</a></div></blockquote></div><br class=""></div></body></html>