CHAPTER
5
CHAPTER
5
TR50 - User Guide 60
OPERATIONS
5.1   About Status LED Ring 
The LED status ring colors are configured for data points to indicate the conditions 
of the parameters that may require control. IAQ Sensor TR50 device helps to view 
and manage the parameter readings through LED ring. This LED ring is available 
in both with display and without display modes. Refer LED Ring Behavior / 
Indication section on page 11 for more details.
5.2   TVOC Sensor Reading
• When the TR50 device is powered up out of the box, it takes at least 48 hours to 
stabilize the TVOC sensor without power interruption,
• In addition, whenever the device is powered off, the TVOC sensor needs some 
time to baseline its data. The long if the device is powered off, the more time is 
needed to complete this baseline process. Normally it can complete between a 
couple of minutes to 2 hours.
So only after this stabilization and baseline time the TVOC reading is effective.
5.3   PM 1 and PM 10 Sensor Reading
TR50 provide independent sensor measurement channel for PM1 and PM10, it is 
not calculated out of PM2.5