LumaSense Technologies IGA 320/23 - Handbuch (Seite 10)

IMPAC pyrometer IGA 320/23
10
6 Settings / parameter descriptions
The pyrometer is equipped with a wide range of settings for optimal adaptation to the required measuring
condition and to measure the temperature correct.
All settings can be read and set only in the pyrometer parame-
ters window of the software InfraWin, at the instrument no set-
tings are possible (detailed description of the software see sec-
tion 7, Software InfraWin).
Selecting the pyrometer parameters window shows the current settings of
the pyrometer. Changing a value can either be done by typing a value in
an input box or by selecting a preset value from the list field.
6.1
Factory settings
Temperature display (°C / °F) = °C
Emissivity (ε) = 100%
Transmittance (
) = 100%
Exposure time (t90) = min
Clear time (tClear) = off
max / min = maximum value storage preset
Analog output (out) = 0 ... 20 mA
LED targeting light = active at Power-on
Sub range same as basic temperature range
Ambient temperature compensation = auto
Address = 00
Limit switch = Off
Baud rate = 19200 Bd
6.2
Basic range
Basic range displays the total range of the pyrometer automatically and can not be changed.
6.3
Material
Under Material you have the possibility to store the names of different measuring objects with their emissivity
values and to recall them from the list. Additionally the material entrances can be done in the text file
„mat.txt.“ (provided in the folder „InfraWin“ in the standard "Documents and Settings "path of Windows, nor-
mally C:\ Documents and Settings \ <user name> \ InfraWin).
6.4
Temperature display in °C or °F
Choose whether the temperature should be displayed in °C (Celsius) or °F (Fahrenheit).
6.5
Emissivity ε
For a correct measurement it is necessary to adjust the emissivity. This emissivity is the relationship between
the emission of a real object and the emission of a blackbody radiation source (this is an object which ab-
sorbs all incoming rays and has an emissivity of 100%) at the same temperature. Different materials have
different emissivities ranging between 0% and 100% (settings at the pyrometer between 10 and 100%, the
set value is indicated on the display). Additionally the emissivity is depending on the surface condition of the
material, the spectral range of the pyrometer and the measuring temperature. The emissivity setting of the
pyrometer has to be adjusted accordingly. Typical emissivity values of various common materials for the two
spectral ranges of the instruments are listed below. The tolerance of the emissivity values for each material
is mainly dependent on the surface conditions. Rough surfaces have higher emissivities.