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Design Handbook on Animal Research Facilities Using Static Microisolators 
2. 1.2.1 Typical Calibration Results 
Locations of Velocity Sensors and Thermocouples within the Cage 
3.07 
• Air Velocity Sensor 
□ Thermocouple 
Temperature and voltage data were analyzed to form trend lines for each velocity. The trend 
lines were used to generate predicted voltage values. The velocity data, temperature data, and 
predicted voltage values were then combined and plotted to form a contour map that had axes of 
velocity, temperature, and contours of voltage. The map was made using a third order 
polynomial regression. A third order polynomial regression was chosen because it provided an 
equation that could easily be used to determine velocity values within a spreadsheet and because 
it displayed contour lines that closely followed those lines displayed by other curve-fit methods. 
The contour map was made as a visual means of finding if values were not outside the 
calibration range, i.e. greater than 0.25 m/s (50 fpm) or less than 0.10 m/s (20 fpm). 
