How to I perform an onsite temperature sensor calibration?

This article explains how to manually calibrate the temperature sensor to suit your particular site conditions

The NoahFace kiosks are factory calibrated before shipping. However, it is recommended that a simple on site calibration is performed after the kiosk has been installed to increase accuracy. This will take into account your environment and also adjust for any small movements in the device during shipping and mounting.

To perform an on-site calibration, you will need a hand-held digital thermometer and one (or ideally two or more) test subjects. The process is as follows:

1. Open the NoahFace App and go to the page: Settings / Sensor. Then hit the camera icon at the top of the screen to open up the Sensor Test page.
2. With your test subject standing an arms length from the screen (approx. 600-700mm), alternate between taking a reading using the handheld thermometer and reading the MAXIMUM value from the NoahFace App. Take at least 5 measurements with each, and average the results.
3. Repeat step 2 with two or three test subjects for increased accuracy.
4. Once you have your results, you can compare both sets of measurements to determine the average difference between them. If for example the NoahFace readings averaged 35.7o C and the hand-held thermometer averaged 36.5o C, you would calculate the average difference as +0.8o C degrees.
5. To permanently apply an adjustment of +0.8o C degrees, press the settings icon in the top right to bring up the Sensor Config window, change the value of the T Adjustment field, and press Set. This can be seen below: