Ametek Land RT81B Руководство пользователя - Страница 17

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Low Temperature Thermometer
7
In order to obtain accurate temperature measurements, the emissivity value of the
target surface must be known. This section of the RT8B Thermometer User Guide
contains typical emissivity values of the most commonly measured materials. Where
no emissivity value is quoted, this means that either the thermometer is not suitable
for the measurement application or the temperature of the target is outside the
thermometer's measurement span. If you have a query regarding the emissivity
of the target in your measurement application, contact AMETEK Land Instruments
International for assistance.

7.1 Refractories

Brick
User Guide
Refractories
Material
Magnesite
oxidised
Red
White
Refractory
Silica
Sillimanite
Ceramics
Alumina
Fig. 10 Typical Emissivity Values for Refractories

EMISSIVITY

Emissivity Value
0.60
0.85
0.90
0.80
0.80
0.60
0.90
0.60
RT8B
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