SATO KEIRYOKI SK-87002, Instruction Manual

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7
Emissivity Table
The table below lists the typical emissivity of different types of materials. (The values are
presented only for reference; the emissivity varies with the temperature and surface conditions of
objects.)
Object Emissivity Object Emissivity Object Emissivity
Meat 0.98 Grains 0.98 Skin 0.97
Fish 0.98 Oil 0.98 Water 0.98
Vegetable 0.98 Plastic 0.95 Soil 0.95
Bread 0.98 Rubber 0.95 Wood 0.98
Confectionery 0.98 Concrete 0.95 Paper 0.92
7. How to measure
1) Take off the lens cap from the measurement window first.
2) Prior to measurement, set both the laser marker and backlight.
3) Direct the thermometer at an object and press the measurement key.
The measured temperature is displayed on the LCD.
NB.: Infrared rays in this measurement wavelength range do not penetrate glasses. When
measuring the object through the glass, it detects the surface temperature of the glass.
4) Release the measurement key. The displayed value can be held for approximately five
seconds.
5) After five seconds, the power is automatically turned off (auto power-off function).
6) When the measurement is finished, put the lens cap on the measurement window.
8. Notes on Measurement
8-1 Measurement Spot Size
The measurement spot size of this thermometer
changes in accordance with the distance as
shown.
The diameter of the measuring spot shown above is defined on the basis of the area that receives
90% or more of the energy. The D:S ratio, which is the ratio of the distance between the object and
the thermometer to the size of the spot, is preset at 8:1 (D = measuring distance, S = diameter of
spot). For example, for the distance of 200 mm, a spot circle of diameter 25 mm can be measured.
If the object is too small, make the distance smaller by bringing the thermometer closer to the
object. For higher accuracy, make sure that the area of the object is at least twice as large as the
spot being measured.
D
Distance
S
Diameter