3
blackbody and camera is 3M, the best distance for temperature measurement is 3M (the straight-line distance
between the front of forehead and camera), the best test width at 3m is about 1.3m (about one gate), the
forward temperature at 3m will be higher, and the backward temperature will be lower. The ideal situation
is to place footprints at the 3m position to guide the thermometer to measure temperature one by one at the
designated position.
BF5421 (13mm) installation requirements are consistent with BF3221 (7mm).
1.3
Installation Diagram
⚫
BF3221 (3.5mm) installation diagram
Blac
kbod
y
Height 2m
Side view
h
u
m
a
n
Distance between
two objects: 2m
Height of
Blackbody 1.8m
Thermal camera
(focal length
3.5mm)
Blac
kbod
y
Sidewalk width
1.5m
Top view
Thermal camera
(focal length
3.5mm)
⚫
BF3221(7mm)
installation diagram
Blac
kbod
y
Height 2m
Side view
h
u
m
a
n
Distance between
two objects: 3m
Height of
Blackbody 1.8m
Thermal camera
(focal length
7mm)
Blac
kbod
y
Sidewalk width
1.3m
Top view
Thermal camera
(focal length
7mm)