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Hi Marco,</div>
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The large dry cabinet does have the nitrogen connection, but the three small ones do not. </div>
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You are correct that the N2 connection would only be used as a backup if the cabinet fails. </div>
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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. </div>
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-Tyler</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Sent:</b> Friday, January 22, 2021 4:04:31 AM<br>
<b>To:</b> George Jacobs <jacobsg@jlab.org><br>
<b>Cc:</b> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> [dsg-hallb_rich] [EXTERNAL] Re: auto-flow N2 rotameter no longer available on new dry cabinet</font>
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<div class="PlainText">Hi everybody,<br>
just to understand the point, as far as I know in the old dry cabinets <br>
we don't have this option and we don't plan to use it in the new cabinet <br>
in normal operation, but only as a backup solution in case of failures. <br>
Is it correct?<br>
If so, in my view it is good to have but strictly speaking not <br>
necessary, and I would choose the option that minimizes the delivery <br>
time, because we have a lot of aerogel on hold in Russia ready to be <br>
shipped.<br>
Best regards,<br>
Marco<br>
<br>
<br>
<br>
<br>
Il 2021-01-22 00:50 George Jacobs ha scritto:<br>
> yes, under $200<br>
> <br>
> --<br>
> George Jacobs<br>
> Jefferson Lab (TJNAF)<br>
> STE 12<br>
> 12000 Jefferson Ave.<br>
> Newport News, VA 23606<br>
> (office) 757-269-7021<br>
> (email) jacobsg@jlab.org<br>
> (url) <a href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a><br>
> <br>
> -------------------------<br>
> <br>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of<br>
> Amrit Yegneswaran <yeg@jlab.org><br>
> SENT: Thursday, January 21, 2021 5:11 PM<br>
> TO: dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> tyler,<br>
> as discussed on the phone , it appears to be a bait and switch!<br>
> ask him for a quote with the auto flow option.<br>
> let's see how much the genius wants<br>
> <br>
> solenoid valves are about $50 - $100 + change for fittings and tubing<br>
> ~ $200 tops<br>
> right george?<br>
> <br>
> later<br>
> amrit<br>
> <br>
> -------------------------<br>
> <br>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of<br>
> Amrit Yegneswaran <yeg@jlab.org><br>
> SENT: Thursday, January 21, 2021 4:47 PM<br>
> TO: dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> thnx<br>
> <br>
> -------------------------<br>
> <br>
> FROM: Tyler Lemon <tlemon@jlab.org><br>
> SENT: Thursday, January 21, 2021 4:46 PM<br>
> TO: Amrit Yegneswaran <yeg@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> Correct, the ones in Hall B open on loss of pressure.<br>
> <br>
> -------------------------<br>
> <br>
> FROM: Amrit Yegneswaran <yeg@jlab.org><br>
> SENT: Thursday, January 21, 2021 4:45:40 PM<br>
> TO: Tyler Lemon <tlemon@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> right so they open on pressure?<br>
> same principle different variables!<br>
> <br>
> -------------------------<br>
> <br>
> FROM: Tyler Lemon <tlemon@jlab.org><br>
> SENT: Thursday, January 21, 2021 4:44 PM<br>
> TO: Amrit Yegneswaran <yeg@jlab.org>; dsg-hallb_rich@jlab.org<br>
> <dsg-hallb_rich@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> Amrit,<br>
> <br>
> They are normally open pneumatic valves that open when the main<br>
> nitrogen supply pressure to RICH is lost.<br>
> <br>
> It would be a similar set up except with a valve held closed by<br>
> applying a voltage rather than a pressure.<br>
> <br>
> -Tyler<br>
> <br>
> Get Outlook for iOS [1]<br>
> -------------------------<br>
> <br>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of<br>
> Amrit Yegneswaran <yeg@jlab.org><br>
> SENT: Thursday, January 21, 2021 4:41:48 PM<br>
> TO: dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> it is a straightforward setup, i think we use such a set up in one of<br>
> the gas systems we have built.<br>
> <br>
> tyler,<br>
> aren't we using the fails open i.e. normally open solenoid in the<br>
> hall for the present rich.<br>
> for N2 flow in emergency situation, when the main flow stops?<br>
> <br>
> -------------------------<br>
> <br>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of<br>
> Patrizia Rossi <rossi@jlab.org><br>
> SENT: Thursday, January 21, 2021 4:00 PM<br>
> TO: Tyler Lemon <tlemon@jlab.org>; dsg-hallb_rich@jlab.org<br>
> <dsg-hallb_rich@jlab.org><br>
> SUBJECT: Re: [dsg-hallb_rich] auto-flow N2 rotameter no longer<br>
> available on new dry cabinet<br>
> <br>
> Hi Tyler,<br>
> <br>
> It seems, from George’s email, that it should be quite simple to<br>
> implement a control on the N2 flow. Therefore I am in favour of buying<br>
> the dry cabinet with the standard N2 flow option.<br>
> <br>
> But let’s wait for my colleagues’ opinion as well<br>
> <br>
> patrizia<br>
> <br>
> FROM: dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of<br>
> Tyler Lemon <tlemon@jlab.org><br>
> DATE: Thursday, January 21, 2021 at 1:50 PM<br>
> TO: "dsg-hallb_rich@jlab.org" <dsg-hallb_rich@jlab.org><br>
> SUBJECT: [dsg-hallb_rich] auto-flow N2 rotameter no longer available<br>
> on new dry cabinet<br>
> <br>
> Hello,<br>
> <br>
> Please see Super Dry's email below.<br>
> <br>
> It turns out that the auto-flow N2 rotameter option for the dry<br>
> cabinet is not available and was offered to us in mistake. Instead,<br>
> Super Dry can offer their standard N2 flow option. The down side of<br>
> this is that it would be a constant N2 purge rather than something<br>
> that can be set to turn on in the event humidity goes higher than<br>
> expected.<br>
> <br>
> As a potential way we can still get this auto-flow capability, we<br>
> could look into designing a valve set up with normally-open valves so<br>
> in the event of a power outage, N2 flow will automatically start.<br>
> <br>
> If the standard N2 connection is okay, I will give the okay to Super<br>
> Dry to move forward. Otherwise, we can have Super Dry remove any N2<br>
> flow option from the order.<br>
> <br>
> -Tyler<br>
> <br>
> -------------------------<br>
> <br>
> FROM: Richard Heimsch <rich@heimsch.com><br>
> SENT: Thursday, January 21, 2021 1:38 PM<br>
> TO: Tyler Lemon <tlemon@jlab.org><br>
> SUBJECT: [EXTERNAL] MSD PO<br>
> <br>
> Hi Tyler,<br>
> <br>
> I received the purchase order today but discovered that I made a<br>
> mistake in quoting you the auto flow nitrogen option. It is no longer<br>
> available on that machine, and there was internal miscommunication<br>
> here about it’s availability since my original quote in November.<br>
> <br>
> However, I can provide the regular N2 flow option which is<br>
> considerably less expensive, and since you explained that it is being<br>
> purchased only to have a back up for emergencies, it will be very<br>
> suitable for that purpose.<br>
> <br>
> I can confirm the order with the alternative part number and price<br>
> and return it to Jami And copy you.<br>
> <br>
> Is that a satisfactory solution for you?<br>
> <br>
> Richard Heimsch<br>
> Super Dry<br>
> “More than just Dry Air”<br>
> 512-308-9700<br>
> Austin, 78602<br>
> Zwolle, 8013 NL<br>
> <br>
> <br>
> <br>
> Links:<br>
> ------<br>
> [1] <a href="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=">
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=</a>
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