[dsg-hallb_rich] [EXTERNAL] Re: auto-flow N2 rotameter no longer available on new dry cabinet

[Tyler Lemon]

Hi Marco,

The large dry cabinet does have the nitrogen connection, but the three small ones do not.

You are correct that the N2 connection would only be used as a backup if the cabinet fails.

I’ve emailed Super Dry again to see about any different options, but have yet to get a response beyond that they are looking into it.

-Tyler


________________________________
From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of Marco Mirazita <Marco.Mirazita at lnf.infn.it>
Sent: Friday, January 22, 2021 4:04:31 AM
To: George Jacobs <jacobsg at jlab.org>
Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
Subject: [dsg-hallb_rich] [EXTERNAL] Re: auto-flow N2 rotameter no longer available on new dry cabinet

Hi everybody,
just to understand the point, as far as I know in the old dry cabinets
we don't have this option and we don't plan to use it in the new cabinet
in normal operation, but only as a backup solution in case of failures.
Is it correct?
If so, in my view it is good to have but strictly speaking not
necessary, and I would choose the option that minimizes the delivery
time, because we have a lot of aerogel on hold in Russia ready to be
shipped.
Best regards,
Marco




Il 2021-01-22 00:50 George Jacobs ha scritto:
> yes, under $200
>
> --
>  George Jacobs
>  Jefferson Lab (TJNAF)
>  STE 12
>  12000 Jefferson Ave.
>  Newport News, VA 23606
>  (office) 757-269-7021
>  (email) jacobsg at jlab.org
> (url) https://userweb.jlab.org/~jacobsg
>
> -------------------------
>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of
> Amrit Yegneswaran <yeg at jlab.org>
>  SENT: Thursday, January 21, 2021 5:11 PM
>  TO: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  tyler,
>  as discussed on the phone , it appears to be a bait and switch!
>  ask him for a quote with the auto flow option.
>  let's see how much the genius wants
>
>  solenoid valves are about $50 - $100 + change for fittings and tubing
> ~ $200 tops
>  right george?
>
>  later
>  amrit
>
> -------------------------
>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of
> Amrit Yegneswaran <yeg at jlab.org>
>  SENT: Thursday, January 21, 2021 4:47 PM
>  TO: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  thnx
>
> -------------------------
>
> FROM: Tyler Lemon <tlemon at jlab.org>
>  SENT: Thursday, January 21, 2021 4:46 PM
>  TO: Amrit Yegneswaran <yeg at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  Correct, the ones in Hall B open on loss of pressure.
>
> -------------------------
>
> FROM: Amrit Yegneswaran <yeg at jlab.org>
>  SENT: Thursday, January 21, 2021 4:45:40 PM
>  TO: Tyler Lemon <tlemon at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  right so they open on pressure?
>  same principle different variables!
>
> -------------------------
>
> FROM: Tyler Lemon <tlemon at jlab.org>
>  SENT: Thursday, January 21, 2021 4:44 PM
>  TO: Amrit Yegneswaran <yeg at jlab.org>; dsg-hallb_rich at jlab.org
> <dsg-hallb_rich at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  Amrit,
>
>  They are normally open pneumatic valves that open when the main
> nitrogen supply pressure to RICH is lost.
>
>  It would be a similar set up except with a valve held closed by
> applying a voltage rather than a pressure.
>
>  -Tyler
>
> Get Outlook for iOS [1]
> -------------------------
>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of
> Amrit Yegneswaran <yeg at jlab.org>
>  SENT: Thursday, January 21, 2021 4:41:48 PM
>  TO: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  it is a straightforward setup, i think we use such a set up in one of
> the gas systems we have built.
>
>  tyler,
>  aren't we using the fails open i.e. normally open solenoid in the
> hall for the present rich.
>  for N2 flow in emergency situation, when the main flow stops?
>
> -------------------------
>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of
> Patrizia Rossi <rossi at jlab.org>
>  SENT: Thursday, January 21, 2021 4:00 PM
>  TO: Tyler Lemon <tlemon at jlab.org>; dsg-hallb_rich at jlab.org
> <dsg-hallb_rich at jlab.org>
>  SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer
> available on new dry cabinet
>
>  Hi Tyler,
>
>  It seems, from George’s email, that it should be quite simple to
> implement a control on the N2 flow. Therefore I am in favour of buying
> the dry cabinet with the standard N2 flow option.
>
>  But let’s wait for my colleagues’ opinion as well
>
>  patrizia
>
>  FROM: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of
> Tyler Lemon <tlemon at jlab.org>
>  DATE: Thursday, January 21, 2021 at 1:50 PM
>  TO: "dsg-hallb_rich at jlab.org" <dsg-hallb_rich at jlab.org>
>  SUBJECT: [dsg-hallb_rich] auto-flow N2 rotameter no longer available
> on new dry cabinet
>
>  Hello,
>
>  Please see Super Dry's email below.
>
>  It turns out that the auto-flow N2 rotameter option for the dry
> cabinet is not available and was offered to us in mistake. Instead,
> Super Dry can offer their standard N2 flow option. The down side of
> this is that it would be a constant N2 purge rather than something
> that can be set to turn on in the event humidity goes higher than
> expected.
>
>  As a potential way we can still get this auto-flow capability, we
> could look into designing a valve set up with normally-open valves so
> in the event of a power outage, N2 flow will automatically start.
>
>  If the standard N2 connection is okay, I will give the okay to Super
> Dry to move forward. Otherwise, we can have Super Dry remove any N2
> flow option from the order.
>
>  -Tyler
>
> -------------------------
>
>  FROM: Richard Heimsch <rich at heimsch.com>
>  SENT: Thursday, January 21, 2021 1:38 PM
>  TO: Tyler Lemon <tlemon at jlab.org>
>  SUBJECT: [EXTERNAL] MSD PO
>
>  Hi Tyler,
>
>  I received the purchase order today but discovered that I made a
> mistake in quoting you the auto flow nitrogen option. It is no longer
> available on that machine, and there was internal miscommunication
> here about it’s availability since my original quote in November.
>
>  However, I can provide the regular N2 flow option which is
> considerably less expensive, and since you explained that it is being
> purchased only to have a back up for emergencies, it will be very
> suitable for that purpose.
>
>  I can confirm the order with the alternative part number and price
> and return it to Jami And copy you.
>
>  Is that a satisfactory solution for you?
>
>  Richard Heimsch
>  Super Dry
>  “More than just Dry Air”
>  512-308-9700
>  Austin, 78602
>  Zwolle, 8013 NL
>
>
>
> Links:
> ------
> [1] https://urldefense.proofpoint.com/v2/url?u=https-3A__aka.ms_o0ukef&d=DwIDaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Ry65GV1L9CI4W-wouYF1Yh0O9PuhLc4ZWUkBi_Op2h8&m=9SZeyj888AaDR87jCDTYq6xVgup8tx2Zk9YjaIRKCmI&s=pqWLL6Ebl6ZQhi0pYaqr7VOxaxHBfkyfUX6wEZxlEUk&e=
>
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