INFRATHERM
pyrometers IS 5 · IS 5-LO · IGA 5 · IGA 5-LO
45
8.5.1 Emissivities
of
common
materials
Emissivity [%]
Emissivity [%]
Measuring object
IS 5
IS 5-LO
(0.8...1.1 µm)
IGA 5
IGA 5-LO
(1.45...1.8 µm)
Measuring object
IS 5
IS 5-LO
(0.8...1.1 µm)
IGA 5
IGA 5-LO
(1.45...1.8 µm)
„Black body furnace“
100
100
Zinc
58
45 ... 55
Steel heavily scaled
93
85 ... 90
Nickel
22
15 ... 20
Steel rolling skin
88
80 ... 88
Gold, Silver, bright
2
2
Steel, molten
30
20 ... 25
Porcelain glazed
60
60
Slag
85
80 ... 85
Porcelain rough
80 ... 90
80 ... 90
Aluminum, bright
15
10
Graphite
80 ... 92
80 ... 90
Chromium, bright
28 ... 32
25 ... 30
Chamotte
45 ... 60
45 ... 60
Brass oxidized (tarnished) 65 ... 75
60 ... 70
Earthenware, glazed
86 ... 90
80 ... 90
Bronce, bright
3
3
Brick
85 ... 90
80 ... 90
Copper, oxidized
88
70 ... 85
Soot
95
95
Set up examples at the pyrometer:
Emi =100%:
Emi =
85%:
Note:
If the settings directly at the pyrometer should be used the pyrometer must be
switched into offline mode
Note:
If the emissivity is set to a value below 20% the instrument will automatically utilize
an emissivity value of 20%. The setting 00 is interpreted as
ε
= 100%!
8.6 Factory
settings
Emissivity
ε
= 100%
Exposure time t
90
= 0.00 (corresponds to the instrument’s min. exposure time of
≤
2 ms)
Analog output = 0 ... 20 mA
Operating mode = online
Wait time (for RS485) = 03 Bit
9 Software
settings
The digital PC interface enables the exchange of data with a PC either by using the
InfraWin
software (sup-
plied) or an user adapted communication software (see command table in section
Data format UPP
).
There are also several additional detailed navigation/reading options. The descriptions to the settings for
emissivity
ε
, exposure time t
90
and analog output 0 or 4 ... 20 mA are the same as described already in section
Instrument settings
. The operating switches must be switched to the online position before performing the
setting adjustments “emissivity”, “exposure time” and “analog output” with the software. The following additional
setting /reading options are available.
9.1
Clear time intervals t
cl
(integrated maximum value storage
)
If the maximum value storage is switched on always the highest last temperature value
will be displayed and stored. The storage has to be cleared at regular intervals for ex-
changing by a new and actual value.
This feature is particularly useful when fluctuating object temperatures cause the display
or the analog outputs to change too rapidly, or the pyrometer is not constantly viewing an
object to be measured. In addition, it may also be beneficial to periodically delete and
reset the stored maximum values.
The following settings are possible:
OFF:
At clear time “OFF“ the max. value storage is switched off and only momentary values are
measured.
Settings:
OFF
0.01 s
. . .
25 s
extern
auto
Hold
