Servomex SERVOTOUGH LaserExact 2950, Operator'S Manual

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SERVOTOUGH LaserExact Monitor, Operator Manual 02950001A_1
28 C
HAPTER
4
In case of instrument failure it is always useful to download the error log and the
system log and send both files to SERVOMEX for diagnostics.
4.3.5 Measurement configuration
In this menu the most important parameters can be set:
Gas pressure (page 1)
Gas temperature (page 1)
Pressure / temperature input method (page 1)
Pressure / temperature PLC input range (page 1)
Concentration averaging (page 2)
Optical path variables (page 2)
Instrument time (page 2)
Note that the parameters are modified in the program but the instrument is not
updated with the new values until the button <Update instrument> is pressed.
Gas pressure and temperature
The strength of the absorption line and line width are pressure and temperature
dependent. This is compensated for by calculating a correction factor based on
deviation of pressure and temperature from the standard atmosphere (P=1.013
bar, T=23 C). For relative concentration units (ppm, %, mg/Nm
3
, g/Nm
3
) the gas
pressure and temperature are in addition directly involved in calculation of the