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5. EMISSIVITY AND FIELD OF VIEW
Emissivity: Emissivity is a term used to describe the energy emitting characteristics of a material.
The higher the emissivity value a material has, the more infrared energy it will emit at a particular
temperature. Most organic materials range in emissivity between 0.85 and 0.98. This thermometer
has a fixed (non-adjustable) emissivity of 0.95 . Measuring objects with an emissivity of less then
0.95 will result in a lower than actual temperature reading on the display. Be aware of this
characteristic when measuring low emissivity objects(e.g. shiny, reflective metal objects).
An effective solution is that using the black adhesive tape to cover the object surface, starting the
measurement until the adhesive tape’s temperature is same as the object
Field of View: The distance to spot ratio for this thermometer is 2: . The ideal working range of
the noncontact thermometer is between 25 mm and 250mm ( and 0 inches). The field of view is
a circular measurement area approximately equal to the distance from the target to the unit,
divided by 2. To ensure accurate measurements , measurement target must fill or exceed the field
of view.
7. MAINTENANCE
. Cleaning Instructions
The meter may be wiped down with a wet sponge or cloth using a mild water based detergent or
anti-bacterial soap and rinsed under a gentle stream of cold water.
NOTE:
This unit is not designed for complete submersion or washing in water
2. Battery replacement
Use the following procedure:
When the battery voltage drop below proper operation range the symbol will appear on the
LCD display and the battery need to be replaced.
•Press the battery cover and towards arrowhead direction to open the battery cover.
•Replace the battery with three new .5V batteries (AAA)
•Replace the battery cover.