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gSKIN
®
U-Value KIT: Instruction Manual
green
TEG
AG
Hofwisenstr. 50A
8153 Rümlang, Switzerland
T: +41 44 515 09 15
info@greenTEG.com
greenTEG.com
Appendix B: Data Logger Characteristics
The table below shows the maximum measurement time for the adjustable measurement intervals
Important Technical Notes
1) If the memory of data logger is full, the oldest data is being overwritten until the current measurement takes up
the whole available memory of 8 MB. Then data logging stops automatically.
2) If the battery is fully charged, it is possible to log the data up to 5 weeks with 10 min intervals.
3) A USB-charger can be attached to the MSR logger to keep the battery fully charged and therefore use the data
logger for longer periods of time.
Appendix C: Special instructions for window U-Value measurement
Guidelines for set-up
For the main part, performing a U-value measurement of a window using a U-value KIT can be done according to
the instruction described under section 3. However, a few points should be taken into account while performing
glass measurements.
Measurements of the U-Value according to ISO 9869-1 2014 standard section 7.1. can only be obtained if the
measurement is conducted approximately one hour after sunset and stopped before sunrise to avoid the effects
of solar radiation. Furthermore it requires a measurement interval over three subsequent nights and results not
differing more than by 5%. If it is not practical to set up the measurement in the evening, the timer function can
be used to postpone the start of the measurement for several hours (see section 3.7.). This allows one to set up
the measurement in the afternoon. Alternatively, in the csv-file, data points obtained during daytime can be
extracted as an excel file
–
a template can be provided by greenTEG upon request (email to info@greenTEG.com).
This allows analysis of data gathered during the night and obtaining a graphical display of the result.
Artificial light also has a large impact on the outcome of a window measurement. For reliable results it is therefore
crucial that all lights in the room are switched off during the whole period of measurement.
