LumaSense Technologies IN 6/78-L - Manual (Page 17)

IN 6/78-L Operating Manual Settings / parameter descriptions · 17
4 Settings / parameter descriptions
Before using the pyrometer some basic settings should be taken. The basic settings can
be done via interface and software InfraWin.
Settings via serial interface: The pyrometer is equipped with a serial interface RS485
which can be used for connection to a PC. With the standard software InfraWin (or a self written
communication software) the following settings can be done, to use this functions, emissivity,
transmittance, exposure time, analog output, maximum value storage, minimum value storage,
reading of the instrument’s internal temperature, setting of an address for bus control with
RS485 interface, setting of the baud rate, function for compensating of the off-set of the
ambient temperature). Additionally, InfraWin enables the temperature display and analysis.
4.1 Factory settings
Temperature display (°C / °F) = °C
Emissivity (ε) = 100%
Transmittance (t) = 100%
Exposure time (t
90
) = 0.08 s (min)
Analog output (out) = 4 ... 20 mA
Baud rate = 19200 Bd
Address = 00
Max./min. value storage = max.
Clear time of max./min. value storage = OFF
Ambient temperature compensation = auto
Wait time t
w
= 10
4.2 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 black body 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% (settings at the pyrometer between 10 and 125%). 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 value of glass is listed below. The tolerance of
the emissivity value for each material is mainly dependent on the surface conditions. Rough
surfaces have higher emissivities.
Note: The minimum emissivity setting for the pyrometer is 10%.
Measuring object Emissivity (at 7.8 µm)
Glass 98%
Settings:
125%
.
.
.
10%