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Message ID: 2385     Entry time: Thu Aug 8 10:54:27 2019
Author: ScottA 
Type: DailyProgress 
Category: TempCtrl 
Subject: Open box vs Closed Box Temperature Noise of AD590 circuit and sensors 
  • I removed the temperature sensing circuit from the insulated box and opened the smaller metal box it was in. This left the circuit open to the air for the whole duration of the measurement.
  • The original data was taken from 8 am to 1 pm, while the open box data was taken from 3 pm to 8 pm. There was most likely more activity in the room for the open measurement.
  • The closed data is less noisy before about 0.2 Hz, but the open data actually becomes one order of magnitude less noisy by 7 Hz.
Attachment 1: AD590_Open_box_comparison.zip  22.251 MB  Uploaded Thu Aug 8 11:56:03 2019
Attachment 2: AD590_Open_Vs_Closed.pdf  179 kB  Uploaded Thu Aug 8 11:56:11 2019  | Hide | Hide all
AD590_Open_Vs_Closed.pdf AD590_Open_Vs_Closed.pdf
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