LumaSense Technologies IGA 5-LO - Handbuch (Seite 16)

IMPAC pyrometers IS 5 · IS 5-LO · IGA 5 · IGA 5-LO
16
7.5.1 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 to 55
Steel heavily scaled 93 85 to 90 Nickel 22 15 to 20
Steel rolling skin 88 80 t 88 Gold, Silver, bright 2 2
Steel, molten 30 20 to 25 Porcelain glazed 60 60
Slag 85 80 to 85 Porcelain rough 80 to 90 80 to 90
Aluminum, bright 15 10 Graphite 80 to 92 80 to 90
Chromium, bright 28 to 32 25 to 30 Chamotte 45 to 60 45 to 60
Brass oxidized (tarnished) 65 to 75 60 to 70 Earthenware, glazed 86 to 90 80 to 90
Bronce, bright 3 3 Brick 85 to 90 80 to 90
Copper, oxidized 88 70 to 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%!
7.6
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 to 20 mA
Operating mode = online
Wait time (for RS485) = 03 Bit
8 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 13, 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 to 20 mA are the same as described already in section
7 , 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.
8.1
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