Lumasense-technologies IN 6/78-L Manuel d'utilisateur télécharger pdf (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

) = 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

= 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

µm)

Glass

98%

Settings:

125%

10%

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 37 38

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