Fluke FoodPro Plus Food Safety Thermometer - Manual (Page 18)

FoodPro Plus
Users Manual
14
Humidity
Noncontact thermometers (IRTs) are not intended for use in extremely
humid or condensing environments. Condensation on the lens window will
impede the optical performance and prevent accurate temperature
measurements. If this occurs, allow the window to dry by evaporation or
wipe with a soft cloth and resume measurements.
Emissivity
A noncontact thermometer (IRT) determines temperature by measuring the
emitted energy of an object. Emissivity (E value) is the measure of an
object’s ability to emit infrared energy.
This noncontact thermometer is specially calibrated for high emissivity
targets and is preset to an E value of ~0.97. This setting is the most
advantageous for capturing the emitted energy from water, oils, shortening,
fat, vegetables, as well as frozen, partially frozen and refrigerated products
in boxes and plastic containers.
Note
Shiny metal surfaces (such as polished or stainless steel) have
low emissivities and reflect the energy of their surrounding,
resulting in inaccurate temperature readings. The emissivity of
shiny metal surfaces can be enhanced to provide more accurate
readings by covering the measurement area with masking tape,
flat black paint, or a coating of shorting or oil. Blackened
cooking surfaces such as griddles and cast iron pans make
good targets.
Setting/Changing º C and º F Temperature Scales
The food safety thermometer can display temperature in either the ° C
(Celsius) or ° F (Fahrenheit) scales. The desired scale is selected at the time
the battery is installed:
Selecting the ° C Scale:
When the battery is connected to the battery leads the ° C scale indicator
shows on the display for approximately 15 seconds. If the SET button is
not pressed the unit will time out and default to the
° C or Celsius scale.
Selecting the ° F Scale:
If the SET button is pressed within 15 seconds of connecting the battery to
the battery leads, the temperature scale display will toggle to the
°
F scale
indicator and the unit will now default to the
°
F or Fahrenheit scale (Figure
12).