5
SPECIAL CONSIDERATIONS
• Before a reliable measurement can be made, the measuring hygrometer and
medium to be measured must be in temperature and humidity eguilibrium.
• Temperature measurement errors
Due to too short measurement time, sunshine during the measurement,
heating, cold outer walls, air draft (e.g. fans), radiating hand and / or body heat
etc.
• Humidity measurement errors
Due to steam, water splashes, dripping water or condensation (not water
condensate) on the sensor etc. However, repeatability and long-term stability
are not impaired by this.
• Contamination
By dust in the air or measurements in powdery substances. This can be largely
avoided by using a corresponding filter. The filter must be cleaned or replaced
periodically depending upon the degree of contamination of the measuring
site.
