The Challenge
“‘The weather station is measuring incorrect wind values.’ Statements like this are how many of the support cases we receive in Technical Service begin. Customers often initially suspect a device defect – but in many cases, the actual cause lies in the immediate installation environment.
The following collage shows typical real-world examples. At first glance, many of these installation locations appear plausible. Unfortunately, none of them is actually correct. In day-to-day operation, however, exactly these kinds of installation situations can lead to distorted measurement values and unexpected reactions in the building automation system.”
My Approach
“When analysing these kinds of support cases, we don’t just look at the parameter settings – we also examine the installation situation on site. In many cases, installation photos alone are enough to narrow down possible causes quickly.
Nearby air conditioning units or heat pumps, for example, can create air turbulence that the wind sensor interprets as actual wind speed. Roof overhangs, façade elements or other structures can cast shadows on the sensors depending on the time of day, which then affects brightness measurement.”
Key Takeaway
"A weather station only delivers reliable data if the installation environment is taken into account as well.
Correct positioning is therefore an essential part of reliable weather data acquisition and helps avoid unnecessary service calls, troubleshooting and complaints.”
