[dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC
Bob Miller
rmiller at jlab.org
Tue Jul 28 15:37:57 EDT 2020
Hi Eugene,
The Hall is locked up now for PSS certification.
Regards,
Bob
On 7/28/2020 3:28 PM, Eugene Pasyuk wrote:
>
> Thanks Marc!
>
> Mohammad, is there anything else you need to do in the hall?
>
> Thanks,
>
> -Eugene
>
> *From: *Marc McMullen <mcmullen at jlab.org>
> *Date: *Tuesday, July 28, 2020 at 3:26 PM
> *To: *Eugene Pasyuk <pasyuk at jlab.org>, Jiwan Poudel
> <jpoudel at jlab.org>, Sebastian Kuhn <skuhn at odu.edu>, Bob Miller
> <rmiller at jlab.org>, Denny Insley <dinsley at jlab.org>,
> "dsg-hallb_rtpc at jlab.org" <dsg-hallb_rtpc at jlab.org>
> *Subject: *Re: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC
>
> Hi Eugene,
>
> I have completed all the RTPC pressure transducer work in the hall.
>
> Regards,
>
> Marc
>
> ------------------------------------------------------------------------
>
> *From:*Eugene Pasyuk <pasyuk at jlab.org>
> *Sent:* Tuesday, July 28, 2020 1:55 PM
> *To:* Marc Mcmullen <mcmullen at jlab.org>; Jiwan Poudel
> <jpoudel at jlab.org>; Kuhn, Sebastian E. <skuhn at odu.edu>; Bob Miller
> <rmiller at jlab.org>; Denny Insley <dinsley at jlab.org>;
> dsg-hallb_rtpc at jlab.org <dsg-hallb_rtpc at jlab.org>
> *Subject:* RE: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of
> RTPC
>
> Just got a message from Bob. The beam line work is done. Please do
> whatever you need to do and let me know when you are done.
>
> -Eugene
>
> *From:* Marc Mcmullen <mcmullen at jlab.org>
> *Sent:* Tuesday, July 28, 2020 12:51
> *To:* Jiwan Poudel <jpoudel at jlab.org>; Eugene Pasyuk
> <pasyuk at jlab.org>; Kuhn, Sebastian E. <skuhn at odu.edu>; Bob Miller
> <rmiller at jlab.org>; Denny Insley <dinsley at jlab.org>;
> dsg-hallb_rtpc at jlab.org
> *Subject:* Re: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of RTPC
>
> Mohammad,
>
> I will be at the lab later to confirm the wiring connection.
>
> Marc
>
> ------------------------------------------------------------------------
>
> *From:*dsg-hallb_rtpc <dsg-hallb_rtpc-bounces at jlab.org
> <mailto:dsg-hallb_rtpc-bounces at jlab.org>> on behalf of
> mhattawy at odu.edu <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>>
> *Sent:* Tuesday, July 28, 2020 12:48 PM
> *To:* Jiwan Poudel <jpoudel at jlab.org <mailto:jpoudel at jlab.org>>;
> Eugene Pasyuk <pasyuk at jlab.org <mailto:pasyuk at jlab.org>>; Kuhn,
> Sebastian E. <skuhn at odu.edu <mailto:skuhn at odu.edu>>; Bob Miller
> <rmiller at jlab.org <mailto:rmiller at jlab.org>>; Denny Insley
> <dinsley at jlab.org <mailto:dinsley at jlab.org>>
> *Cc:* dsg-hallb_rtpc at jlab.org <mailto:dsg-hallb_rtpc at jlab.org>
> <dsg-hallb_rtpc at jlab.org <mailto:dsg-hallb_rtpc at jlab.org>>
> *Subject:* Re: [dsg-hallb_rtpc] [EXTERNAL] Re: Pressure transducer of
> RTPC
>
> Dear Marc and DSG members,
>
> We just heard an update from Marco Battaglieri that we may get the
> beam to the Hall by this weekend. Bob Miller will be putting the
> beamline components back. I would like to ask you kindly to help with
> fixing the pressure transducer as soon as you can.
>
> Eugene, Please don't start sweeping the magnets till I confirm that
> we are done with this fix.
>
> Best regards,
>
> Mohammad.
>
> On Tue, Jul 28, 2020 at 10:51 AM mhattawy at odu.edu
> <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>> wrote:
>
> If you could not open the picture that Jiwan attached to his
> replay, here it is.
>
> Mohammad.
>
> On Tue, Jul 28, 2020 at 10:48 AM mhattawy at odu.edu
> <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>> wrote:
>
> Hello Marc,
>
> Following our phone call this morning, It has to be what you
> call PDT2.
>
> Mohammad.
>
> On Tue, Jul 28, 2020 at 10:45 AM Jiwan Poudel
> <jpoudel at jlab.org <mailto:jpoudel at jlab.org>> wrote:
>
> Hello all,
>
> We have two differential transducer (PDTs): RTPC-DMS
> (PDT332) and RTPC-Buffer(PDT208). So I am taking about
> RTPC-DMS pressure transducer. I have only this photo right
> now, where you can see one two wires are coming out from PDT.
>
> Thank you,
>
> Jiwan
>
> Image removed by sender.
>
> On Jul 28, 2020, at 10:19 AM, mhattawy at odu.edu
> <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>> wrote:
>
> Hello Jiwan,
>
> Sounds like the DSG group is not fully sure about the
> specification of this transducer as they used to name
> it PT2. Can you please send them some pics of the
> transducer as the ones I did for the other one.
>
> Mohammad
>
> On Tue, Jul 28, 2020 at 10:04 AM mhattawy at odu.edu
> <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>> wrote:
>
> Dear DSG members,
>
> Please send us the cables color code for
> PDT332 to connect it back.
>
> Regards,
>
> Mohammad.
>
> On Mon, Jul 27, 2020 at 20:37 <jpoudel at jlab.org
> <mailto:jpoudel at jlab.org>> wrote:
>
> I am sorry to write again, but I have to
> inform to you all correctly. I wanted to write
> "cable from transducer pt332 is not attached
> to chassis but GUI is showing a large negative
> value. How?" Previus email was confusing
> (isn't is changed to is) so have to write again.
>
> On Jul 27, 2020 20:09, jpoudel at jlab.org
> <mailto:jpoudel at jlab.org> wrote:
>
> PDT208 is working fine, the connection is
> good. I verified connection and connected
> it to chassis. Its showing quite
> reasonable reading also.
>
> 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.
>
> In addition, Connecting wires at
> transducer PDT332 are coming out. So we
> need color code of cables before
> connecting it.
>
> Thank you,
>
> Jiwan
>
> On Jul 27, 2020 19:18, jpoudel at jlab.org
> <mailto:jpoudel at jlab.org> wrote:
>
> Hello Marc,
>
> Can you please send me the connection
> of PDT 332 (color code of cables) also?
>
> In PDT 208, white and green are
> together. Are they -15V?
>
> Thank you,
>
> Jiwan
>
> On Jul 27, 2020 18:40, JIWAN POUDEL
> <jpoud001 at odu.edu
> <mailto:jpoud001 at odu.edu>> wrote:
>
> I will check the connections and
> verify it is correct before
> plugging in to chassis.
>
> Thank you,
>
> Jiwan
>
> On Jul 27, 2020, at 6:22 PM,
> mhattawy at odu.edu
> <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>>
> wrote:
>
> Thanks Marc,
>
> 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?
>
> Mohammad
>
> On Mon, Jul 27, 2020 at 18:18
> Marc Mcmullen
> <mcmullen at jlab.org
> <mailto:mcmullen at jlab.org>> wrote:
>
> Hi Mohammad and Jiwan,
>
> 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.
>
> Regards,
>
> Marc
>
> ------------------------------------------------------------------------
>
> *From:* Marc Mcmullen
> <mcmullen at jlab.org
> <mailto:mcmullen at jlab.org>>
> *Sent:* Friday, July 24,
> 2020 11:18 AM
>
>
> *To:*
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org> <dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>>
> *Subject:* Re:
> [dsg-hallb_rtpc]
> [EXTERNAL] Re: Pressure
> transducer of RTPC
>
> Thanks Mohammad,
>
> I'll look into the spares
> first. Then contact you
> about the repair.
>
> Regards,
>
> Marc
>
> ------------------------------------------------------------------------
>
> *From:* dsg-hallb_rtpc
> <dsg-hallb_rtpc-bounces at jlab.org
> <mailto:dsg-hallb_rtpc-bounces at jlab.org>>
> on behalf of
> mhattawy at odu.edu
> <mailto:mhattawy at odu.edu> <mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>>
> *Sent:* Friday, July 24,
> 2020 11:16 AM
> *To:*
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org> <dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>>
> *Subject:* Re:
> [dsg-hallb_rtpc]
> [EXTERNAL] Re: Pressure
> transducer of RTPC
>
> Hello Marc,
>
> 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.
>
> Mohammad
>
> On Fri, Jul 24, 2020 at
> 11:11 Marc Mcmullen
> <mcmullen at jlab.org
> <mailto:mcmullen at jlab.org>>
> wrote:
>
> Hi Jiwan,
>
> 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.
>
> 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.
>
> Additionally, I will
> be doing this work
> either on the weekend
> or after hours, to
> avoid coming into
> contact with others.
>
> I'll let you know the
> status of the spares
> sometime today, so we
> can coordinate the
> system outage.
>
> Regards,
>
> Marc
>
> ------------------------------------------------------------------------
>
> *From:* dsg-hallb_rtpc
> <dsg-hallb_rtpc-bounces at jlab.org
> <mailto:dsg-hallb_rtpc-bounces at jlab.org>>
> on behalf of Jiwan
> Poudel
> <jpoudel at jlab.org
> <mailto:jpoudel at jlab.org>>
> *Sent:* Friday, July
> 24, 2020 9:33 AM
> *To:*
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org> <dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>>
> *Subject:* Re:
> [dsg-hallb_rtpc]
> [EXTERNAL] Re:
> Pressure transducer of
> RTPC
>
> Hello Brian,
>
> 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.
>
> Thank you,
>
> Jiwan
>
> On Jul 23, 2020,
> at 2:29 PM, Brian
> Eng <beng at jlab.org
> <mailto:beng at jlab.org>>
> wrote:
>
> Thanks Mohammad,
>
> Fortunately it
> already has the
> pinout on it.
>
> 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.
>
> 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.
>
> 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.
>
> To eliminate that
> possibility the
> sensor would need
> to be removed and
> tested on a bench
> using the same
> pins as listed above.
>
> 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.
>
> ------------------------------------------------------------------------
>
> *From:* dsg-hallb_rtpc
> <dsg-hallb_rtpc-bounces at jlab.org
> <mailto:dsg-hallb_rtpc-bounces at jlab.org>>
> on behalf of
> mhattawy at odu.edu
> <mailto:mhattawy at odu.edu><mohammad.hattawy at gmail.com
> <mailto:mohammad.hattawy at gmail.com>>
> *Sent:* Thursday,
> July 23, 2020 1:21 PM
> *To:*
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org> <dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>>
> *Subject:* [dsg-hallb_rtpc]
> [EXTERNAL] Re:
> Pressure
> transducer of RTPC
>
> <image_123923953.JPG>
>
> <image_123923953.JPG>
>
> <image_6483441.JPG>
>
> On Thu, Jul 23,
> 2020 at 12:38
> Brian Eng
> <beng at jlab.org
> <mailto:beng at jlab.org>>
> wrote:
>
> Hi Jiwan,
>
> The voltage
> being read
> back by the
> cRIO is ~4V
> which is being
> converted
> correctly to
> ~400 torr.
>
> 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?
>
> 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).
>
> ------------------------------------------------------------------------
>
> *From:* Jiwan
> Poudel
> <jpoudel at jlab.org
> <mailto:jpoudel at jlab.org>>
> *Sent:* Thursday,
> July 23, 2020
> 11:20 AM
> *To:* Brian
> Eng
> <beng at jlab.org
> <mailto:beng at jlab.org>>
> *Cc:*
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org> <dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>>
> *Subject:* Pressure
> transducer of RTPC
>
> Hello Brian,
>
> 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?
>
> Thank you,
>
> Jiwan
>
> Image removed
> by sender.
>
> _______________________________________________
> dsg-hallb_rtpc
> mailing list
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc
> <https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
> _______________________________________________
> dsg-hallb_rtpc
> mailing list
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc
> <https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc>
>
> _______________________________________________
> dsg-hallb_rtpc mailing
> list
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> <mailto:dsg-hallb_rtpc at jlab.org>
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc
> <https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
> _______________________________________________
> dsg-hallb_rtpc mailing list
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc
> <https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
> _______________________________________________
> dsg-hallb_rtpc mailing list
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc
> <https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc>
>
> _______________________________________________
> dsg-hallb_rtpc mailing list
> dsg-hallb_rtpc at jlab.org
> <mailto:dsg-hallb_rtpc at jlab.org>
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc
> <https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rtpc>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
>
>
> --
>
> Best regards,
> Mohammad Hattawy.
>
--
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
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