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<p class="MsoNormal">Brad,</p>
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<p class="MsoNormal">Excellent!</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Marc McMullen<o:p></o:p></p>
<p class="MsoNormal">Sr. Instrumentation Designer<o:p></o:p></p>
<p class="MsoNormal">Detector Support Group<o:p></o:p></p>
<p class="MsoNormal">(757) 269-7738<o:p></o:p></p>
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:brads@jlab.org">Brad Sawatzky</a><br>
<b>Sent: </b>Friday, March 4, 2022 2:01 PM<br>
<b>To: </b><a href="mailto:mcmullen@jlab.org">Marc Mcmullen</a><br>
<b>Cc: </b><a href="mailto:segal@jlab.org">Jack Segal</a>; <a href="mailto:dsg-halla_gem@jlab.org">
dsg-halla_gem@jlab.org</a>; <a href="mailto:rossi@jlab.org">Patrizia Rossi</a><br>
<b>Subject: </b>[EXTERNAL] Re: [Dsg-halla_gem] Add an ADC to RPi for gas flows?</p>
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<p class="MsoNormal">Hi Marc,<br>
<br>
You should probably coordinate IOC updates with me (although Steve is<br>
around to support).<br>
<br>
-- Brad<br>
<br>
On Fri, 04 Mar 2022, Marc Mcmullen wrote:<br>
<br>
> Hi Jack,<br>
> <br>
> I'll be at the lab on Monday to get the ADC. I'll discuss this with our<br>
> group and come up with a solution on this. Additionally, I'll probably set<br>
> up a meeting for the GEMs sometime next week so we can talk about analysis<br>
> of the gas.<br>
> <br>
> This will require an additional PV (I'll probably want a few extras for<br>
> expansion), I use to coordinate that with Steve. Is he still handling the<br>
> IOC updates?<br>
> <br>
> Regards,<br>
> Marc McMullen<br>
> Sr. Instrumentation Designer<br>
> Detector Support Group<br>
> (757) 269-7738<br>
<br>
> From: Jack Segal<br>
> Sent: Friday, March 4, 2022 1:38 PM<br>
> To: Marc Mcmullen<br>
> Subject: Add an ADC to RPi for gas flows?<br>
> <br>
> Marc,<br>
> We are adding a Binary Gas Analyzer, see the attached picture. It has an<br>
> analog output.<br>
> Can we try to add an ADC to the I2C string to read this out with the mass<br>
> flow sensors?<br>
> I have some DIN rail mountable 16 bit ADCs.<br>
> This allows us to monitor the gas mixture ratio.<br>
> <br>
-- <br>
Brad Sawatzky (he/him), PhD <brads@jlab.org> -<>- Jefferson Lab/ Hall C/C111<br>
Ph: 757-269-5947 -<>- Fax: 757-269-5235 -<>- Pager: brads-page@jlab.org<br>
The most exciting phrase to hear in science, the one that heralds new<br>
discoveries, is not "Eureka!" but "That's funny..." -- Isaac Asimov<o:p></o:p></p>
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