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Hi Valery,
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<div class="">We actually have 2 sensors on L1 of the FC located right next to each other (they're on the same PCB). Those are generally within ~0.1C of each other, which is the dead-band of the archiver.</div>
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<div class="">Looking at the live data it's probably even less than that.</div>
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<div class=""><img apple-inline="yes" id="E683704B-EBE9-43D1-B571-BFF89DCF90E4" src="cid:474E5845-1329-44F8-9329-B40757D4811A@jlab.org" class=""><br class="">
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<blockquote type="cite" class="">On Nov 11, 2019, at 9:29 AM, Valery Kubarovsky <<a href="mailto:vpk@jlab.org" class="">vpk@jlab.org</a>> wrote:<br class="">
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Hi Tyler,<br class="">
What is the systematic errors for these measurements.?<br class="">
Do the sensors show the same temp if put them close to each other in space?<br class="">
Regards,<br class="">
Valery<br class="">
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From: Dsg-rich <<a href="mailto:dsg-rich-bounces@jlab.org" class="">dsg-rich-bounces@jlab.org</a>> on behalf of Tyler Lemon <tlemon@jlab.org><br class="">
Date: Monday, November 11, 2019 at 7:48 AM<br class="">
To: dsg-rich <dsg-rich@jlab.org><br class="">
Subject: Re: [Dsg-rich] Forward carriage ambient temperature sensors<br class="">
<br class="">
Hello,<br class="">
<br class="">
The PVs for the forward carriage temperature sensors were added to the archiver last Friday.<br class="">
<br class="">
>From the archived data over the weekend, the average temperature difference (in degrees Celsius) between L1 and L4 was 0.64 C +/- 0.06 C.<br class="">
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Attached are two plots: one of L1 and L4 temperature, the other the difference between L1 and L4.<br class="">
<br class="">
Tyler<br class="">
From: Dsg-rich <dsg-rich-bounces@jlab.org> on behalf of Brian Eng <beng@jlab.org><br class="">
Sent: Thursday, October 31, 2019 11:27 AM<br class="">
To: dsg-rich <dsg-rich@jlab.org><br class="">
Subject: Re: [Dsg-rich] Forward carriage ambient temperature sensors<br class="">
<br class="">
Log entry for the newly added RTDs on FC L1 as the Hall B provided ones aren't particularly fast/accurate.<br class="">
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https://logbooks.jlab.org/entry/3738288<br class="">
<br class="">
> On Oct 29, 2019, at 1:23 PM, Tyler Lemon <tlemon@jlab.org> wrote:<br class="">
> <br class="">
> Hello,<br class="">
> <br class="">
> Aaron and I have relocated the FC ambient temperature/humidity sensors to the appropriate level based on their PV names.<br class="">
> <br class="">
> The logbook entry below has the details on the new sensor locations. <br class="">
> <br class="">
> https://logbooks.jlab.org/entry/3737646<br class="">
> <br class="">
> Once some time has elapsed, we'll analyze the temperature data to get a better idea of the temperature at the top vs bottom of the FC.<br class="">
> <br class="">
> -Tyler<br class="">
<br class="">
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Dsg-rich mailing list<br class="">
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</blockquote>
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