Field of View
The ideal working range of the noncontact
thermometer (IRT) is between 2cm and 25cm
(1 and 10 inches). The field of view is a circu-
lar measurement area approximately equal to
the distance from the target to the unit, divided
by 2. The built in target illumination beam
helps to indicate the measurement area. To
ensure accurate measurements, the measure-
Figure 12
ment target must fill or exceed the field of
view. When conditions permit move in closer
to the subject (Figure 12).
Operating and Ambient
Temperature Range
The food safety thermometer is designed
to operate in environments between
30 Minutes
0°C–50°C (32°F–120°F). Avoid subjecting the
unit to extreme or abrupt changes in ambient
temperatures. Allow the unit to stabilize for a
minimum of 30 minutes if exposed to rapid
Hot to Cold and Cold to Hot
temperature changes. Failure to precondition
Figure 13
the instrument to the ambient temperature
may result in measurement errors. (Figure 13)
Response Time
The response time of the instrument from
initial start up is approximately 1 second.
The temperature display is updated at
approximately 2 times per second during
sustained operation.
16