[Halld-controls] FCAL-II controls discussions

[Beni Zihlmann]

According to the spec sheet the sensitivity of the sensor is 21.8 Pa/mV  
(0 to 5V range)
the sensitivity of the ADC is 0.076mV/ADCcount
So the digitizer is way more sensitive than the sensor.

cheers,
Beni



On 3/23/23 11:22, Bobby Bunton via Halld-controls wrote:
> Hello all,
>
> Per our discussion in the controls meeting today, here is the 
> information that was requested.
> This is the pressure sensor we are using, Apogee instruments SB-100 
> barometric pressure sensor
> https://www.apogeeinstruments.com/sb-100-barometric-pressure-sensor/?gclid=Cj0KCQjw8e-gBhD0ARIsAJiDsaXMs3PuHfNMhwpBGExj1jN6KtLCpGJEFnUSc3kbAtm8uM88eItx8jIaAsGDEALw_wcB#product-tab-description
>
> And the PLC module that is reading it is a compact i/o 1769-IF8, the 
> module is configured with the 60hz selection filter
>
> https://literature.rockwellautomation.com/idc/groups/literature/documents/in/1769-in067_-en-p.pdf
>
> Also ive already switched the old sensor back to being the input for 
> barpress1 and put an offset on the barpress2 channel so that they more 
> closely agree, please let me know if there is any more information you 
> need.
>
> Thanks,
> Bobby
> <https://www.apogeeinstruments.com/sb-100-barometric-pressure-sensor/?gclid=Cj0KCQjw8e-gBhD0ARIsAJiDsaXMs3PuHfNMhwpBGExj1jN6KtLCpGJEFnUSc3kbAtm8uM88eItx8jIaAsGDEALw_wcB#product-tab-description>
> 	
> SB-100: Barometric Pressure Sensor 
> <https://www.apogeeinstruments.com/sb-100-barometric-pressure-sensor/?gclid=Cj0KCQjw8e-gBhD0ARIsAJiDsaXMs3PuHfNMhwpBGExj1jN6KtLCpGJEFnUSc3kbAtm8uM88eItx8jIaAsGDEALw_wcB#product-tab-description>
> The SB-100 provides an accurate, stable, and durable measurement of 
> barometric pressure at an affordable cost.
> www.apogeeinstruments.com
>
>
> ------------------------------------------------------------------------
> *From:* Halld-controls <halld-controls-bounces at jlab.org> on behalf of 
> Hovanes Egiyan via Halld-controls <halld-controls at jlab.org>
> *Sent:* Friday, March 10, 2023 9:17 AM
> *To:* halld-controls at jlab.org <halld-controls at jlab.org>
> *Subject:* [Halld-controls] FCAL-II controls discussions
>
> Hi all,
>
> I scheduled an extra meeting for next Thursdays, March 16, at 10am to 
> discuss slow controls for FCAL-2 in details. Sasha will be presenting 
> the requirements. There will be no other topics on the agenda for that 
> meeting.
>
> We will have our regular Hall D controls meetings based on the usual 
> schedule.
>
> Hovanes.
>
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