General IRTC40 Mode D'emploi page 18

the target so the IR sensor only detects
radiation from the target and excludes
radiation from its surroundings.
75@600
50@400
mm
25@200
S
1@8
2@16
inches
3@24
D
D:S=8:1
The IRTC40's field of view
The IRTC40 cannot make accurate
measurements if there is glass or plastic
between it and the target.
When the ambient temperature is higher
than 104°F (40°C) or lower than 32°F (0°C),
the LCD will show the following error
message: Err.
When the temperature of a target exceeds
the IRTC40's specified maximum of 968°F
(520°C), the LCD will display a message
of Hi.
When the temperature of a target is less
than the IRTC40's specified minimum of
-36.4°F (-38°C), the LCD will display a
message of Lo.
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