6 Using the product
49
Graphical representation
1 PPD axis, scale from 0% to 100%
2 PMV axis, scale from -3 to +3
3 Green area of curve from -0.5 to 0.5 PMV
4 Calculated point from PPD and PMV.
5 Critical area of curve
Formula for display
PPD = 100-95*exp(-0.03353*PMV
4
– 0.2179*PMV
2
)
From firmware version 1.11 onwards, when using the IAQ probe 0632
1543 the CO2 content can be stored at the same time, in addition to
the PMV/PPD measurement.
6.6.1. Calculating the normal effective temperature (NET)
Measurement program available from firmware version
1.11 onwards.
Make sure that the specific instrument and cable
temperatures are not exceeded. Extension cables should
be used for high radiation temperatures in particular.
The normal effective temperature NET is a climate index and is
typically used in workplaces exposed to heat, where the influence
of thermal radiation may be disregarded and long-sleeved clothing
worn.
Climate indices are always used when the complex thermal
stresses on an individual, caused by various influencing factors, are
summarized in a numerical value.
The normal effective temperature is calculated in accordance with
DIN EN 33403-3:2001.
The normal effective temperature NET is usually expressed in °C
and is applicable to clothed persons and in climates with no
additional thermal radiation.
Necessary measurement parameters
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