[Dsg-rich] humidity sensor calibration

[Patrizia Rossi]

many thanks!
---------------------------------------------------
# Patrizia Rossi
# Jefferson Lab 
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> On 29/nov/2017, at 09:40, Tyler Lemon <tlemon at jlab.org> wrote:
> 
> Hello Dr. Rossi,
> 
> We can meet at 11:00AM so you are able to attend.
> 
> Best regards,
> Tyler
> 
> From: "Patrizia Rossi" <rossi at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "dsg-rich" <dsg-rich at jlab.org>
> Sent: Wednesday, November 29, 2017 9:38:04 AM
> Subject: Re: [Dsg-rich] humidity sensor calibration
> 
> Dear Tyler,
> 
> I would like to attend the meeting but at 10 am I have another meeting.
> Would it be possible to move the meeting at 11:00 am?
> 
> thanks
> patrizia
> ---------------------------------------------------
> # Patrizia Rossi
> # Jefferson Lab 
> # 12000 Jefferson Avenue
> # Suite 5
> # Newport News VA 23606 (USA)
> # e-mail: rossi at jlab.org <mailto:rossi at jlab.org>
> # phone: +1 (757) 269 7740
> # fax: + 1 (757) 269 5800
> # cell: +1 (757) 528 7606
> 
> 
> 
> 
> On 29/nov/2017, at 09:34, Tyler Lemon <tlemon at jlab.org <mailto:tlemon at jlab.org>> wrote:
> 
> Hello Marco,
> 
> We would be available to meet this morning at 10:00AM.
> 
> So DSG can prepare for the meeting, what issue is there with the readings during the time interval in your logbook entry from 2017-11-25 from 14:00 to 18:00?
> 
> Taking the data for that time interval, we wrote a Python script that parses the data every 10 seconds and calculates the maximum difference between humidity readings (1440 data points total). The resulting plot (2017-11-25_1400_to 1800.jpeg) is attached. From the data, the largest difference is 1.22% and the average difference is 0.75% +/- 0.22%. This is within the specs of the sensor. 
> 
> If the issue is the fluctuations in humidity readings in the middle of the plot, that seems to be a result of whatever programming the drybox uses to reach a specified humidity. It is not from the humidity sensors. 
> 
> Best regards,
> Tyler
> 
> From: "Mirazita Marco" <Marco.Mirazita at lnf.infn.it <mailto:Marco.Mirazita at lnf.infn.it>>
> To: "dsg-rich" <dsg-rich at jlab.org <mailto:dsg-rich at jlab.org>>
> Sent: Tuesday, November 28, 2017 11:15:00 AM
> Subject: [Dsg-rich] humidity sensor calibration
> 
> Hi all,
> I would have a meeting to discuss the calibration of the humidity 
> sensors at values below 10%.
> The data I took few days ago can be found here:
> https://logbooks.jlab.org/entry/3496207 <https://logbooks.jlab.org/entry/3496207>
> When would you be available?
> Thank you,
> Marco
> 
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