[Dsg-halla_gem] [EXTERNAL] Re: Add an ADC to RPi for gas flows?

[Marc Mcmullen]

Brad,

Excellent!

Regards,
Marc McMullen
Sr. Instrumentation Designer
Detector Support Group
(757) 269-7738

From: Brad Sawatzky<mailto:brads at jlab.org>
Sent: Friday, March 4, 2022 2:01 PM
To: Marc Mcmullen<mailto:mcmullen at jlab.org>
Cc: Jack Segal<mailto:segal at jlab.org>; dsg-halla_gem at jlab.org<mailto:dsg-halla_gem at jlab.org>; Patrizia Rossi<mailto:rossi at jlab.org>
Subject: [EXTERNAL] Re: [Dsg-halla_gem] Add an ADC to RPi for gas flows?

Hi Marc,

You should probably coordinate IOC updates with me (although Steve is
around to support).

-- Brad

On Fri, 04 Mar 2022, Marc Mcmullen wrote:

> Hi Jack,
>
> I'll be at the lab on Monday to get the ADC. I'll discuss this with our
> group and come up with a solution on this. Additionally, I'll probably set
> up a meeting for the GEMs sometime next week so we can talk about analysis
> of the gas.
>
> This will require an additional PV (I'll probably want a few extras for
> expansion), I use to coordinate that with Steve. Is he still  handling the
> IOC updates?
>
> Regards,
> Marc McMullen
> Sr. Instrumentation Designer
> Detector Support Group
> (757) 269-7738

> From: Jack Segal
> Sent: Friday, March 4, 2022 1:38 PM
> To: Marc Mcmullen
> Subject: Add an ADC to RPi for gas flows?
>
> Marc,
>    We are adding a Binary Gas Analyzer, see the attached picture. It has an
> analog output.
> Can we try to add an ADC to the I2C string to read this out with the mass
> flow sensors?
> I have some DIN rail mountable 16 bit ADCs.
>    This allows us to monitor the gas mixture ratio.
>
--
Brad Sawatzky (he/him), PhD <brads at jlab.org> -<>- Jefferson Lab/ Hall C/C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov

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