[Dsg-rich] humidity sensor calibration

[Tyler Lemon]

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 
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# Newport News VA 23606 (USA) 
# e-mail: rossi at jlab.org 
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# fax: + 1 (757) 269 5800 
# cell: +1 (757) 528 7606 







On 29/nov/2017, at 09:34, Tyler Lemon < 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 > 
To: "dsg-rich" < 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 
When would you be available? 
Thank you, 
Marco 

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