Dali LT Series User Manual page 30

For Temperature Measurement Correction item in Temperature Measurement Setting menu, press
OK button to pop out temperature measurement correction dialog box. User may set emissivity
factor, corrected temperature, distance, humidity and other items. Press up and down direction
buttons to switch items. Press left and right direction buttons to set the item contents. ">" indicates
sub-menu. Press right button to enter.
Emissivity factor: As different objects have different emissivities, different emissivities can
be set for different temperature measurement points. When it is not set, apply the
system default specific emissivity factor. For the emissivities of common
materials, refer to the attachment for reference.
Corrected temperature: it is adopted to modify the temperature measurement value of the
temperature measurement object.
Distance: set the distance between the thermal imager and the temperature measurement
target, to facilitate the accuracy of the temperature measurement. When the
distance is less than 10m, adopt the actual distance (to the accuracy of 0.5m) as
much as possible.
Humidity: set the relative humidity of the utilization environment of the thermal imager.
Background temperature: This item is valid when it is set to "On". A fixed temperature can
be adopted as reference temperature.
Temperature Measurement Correction Menu
30