Servomex SERVOTOUGH LaserExact 2950, Operator'S Manual

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SERVOTOUGH LaserExact Monitor, Operator Manual 02950001A_1
34 C
HAPTER
4
The relative units
g/Nm
3
, mg/Nm
3
and ug/Nm
3
are the values obtained from the
conversion of the absolute units ( g/m
3
, mg /m
3
and u g/m
3
) to standard pressure
and temperature assuming the ideal gas law. According to the European standard
which applies for the SERVOTOUGH LaserExact Monitor these values are P =
1.013 Bar and T = 0°C. Please note that the US standard for the relative units
g/Nm
3
and mg/Nm
3
deviates with regard to standard temperature and refers to
25°C.
Note that the gas concentration is always measured on “wet basis”, i.e. no
correction is done for water vapour present in the process gas.
Output format
The numerical format of the gas concentration on the LCD display and in most
parts of the service program.
The format is presented according to the programming language C (%6.2f means
that the floating number will be presented with 2 decimals and 6 digits including
the decimal point, e.g. 123.45).