IMPAC pyrometers IN 210 · IN 210/4 · IN 210/5
10
7
Parameter Settings
The setting of emissivity, response time and temperature
sub range can
only
be done via service interface with the
portable setup device HT 6000 (see
8.1
) or via USB adapter
for IN 210 and the software InfraWin (see
8.2
).
On request the instrument also can be delivered with preset-
ting on demand.
7.1 Factory
settings
Emissivity
= 100%;
Response time
= 120 ms;
Sub range
= measuring range;
Ambient
temperature
compensation
= auto;
Address
= 00
7.2 Emissivity
ε
The
emissivity
is the relationship between the emission of a real object and the emission of a
blackbody radiation source (this is an object which absorbs all incoming rays and has an
emissivity of 100%) at the same temperature. Different materials have different emissivities
ranging between 0% and 100% (pyrometer settings between 5 to 100%). Materials which
reflect more radiation have a lower emissivity and the emissivity setting of the pyrometer
needs to be adjusted accordingly. Additionally the emissivity is depending on the surface
condition of the material, the spectral range of the pyrometer and the measuring temperature.
Typical emissivity values of various common materials for the two spectral ranges of the in-
struments are listed in the emissivity table below. The tolerance of the emissivity values for
each material is mainly dependent on the surface conditions. Rough surfaces have higher
emissivities.
Emissivity values for IN 210 and IN 210/4
Object
Emissivity (%)
Object
Emissivity (%)
"Black body furnace"
1
Brickwork
Human skin
0.98
Fire clay
Black dull varnish
0.95
Rubber
Carbon soot
0.95
Porcelain
0.85 - 0.95
Wood
0.80 - 0.92
Ceramics
Paper
0.92 - 0.95
Varnish
Asphalt
0.85
Plaster
Glass / quartz glass
0.72 - 0.87
Oil paint
Textile
0.75 - 0.95
Steel (oxidized)
0.6 - 0.8
Graphite
0.75 - 0.92
Steel (smooth)
0.1 - 0.3
Cement
0.9
Aluminum (smooth)
0.02 - 0.15
Water
0.95
Aluminum (anodized)
0.9
Emissivity value for IN 210/5
Object
Emissivity (%)
Glass / quartz glass
0.97
Service
interface
Sealing
cap
