Land Cyclops 160B, User Manual, Page: 35 / 50

Cyclops 160B User Guide
Page 29
11 Emissivity
11.1 Emissivity values
In order to obtain accurate temperature measurements, the emissivity value
of the target surface must be known. This section of the User Guide contains
typical emissivity values of the most commonly measured materials for each
thermometer variant.
Where no emissivity value is quoted, this means that the thermometer may be
unsuitable for the measurement application, the temperature of the target is
outside the thermometer’s measurement span, or that the emissivity value cannot
be accurately specified and should be determined in-situ (See Section 11.2). If
you have a query regarding the emissivity of the target in your measurement
application, contact Land Instruments International for assistance.
Refractories
Material Cyclops 160B
Alumina 0.30
Brick Red 0.80
White refractory 0.35
Silica 0.60
Sillimanite 0.60
Ceramics 0.50
Magnesite -
Alloys
Material Cyclops 160B
Brass 0.18
Oxidised 0.70
Chromel & Alumel 0.30
Oxidised 0.80
Constantin & Manganin 0.22
Oxidised 0.60
Inconel 0.30
Oxidised 0.85
Monel 0.22
Oxidised 0.70
Nichrome 0.28
Oxidised 0.85