"The system works as it should, but there are still complaints"
Air conditioning often feels too warm or too cold. A good way to minimise complaints is to show the customer precisely what is happening over time in the disputed area. One or two T-TEC 6-1E Data loggers (or T-TEC 6-1C if humidity is involved) placed in the room for a week, logging every minute will show exactly what happens.
Commissioning of new plant
"Customer wants to know that the temperature is properly maintained in all areas"
Depending of the size and number of rooms , many data loggers may be needed to provide evidence of how a system works in all spaces simultaneously.
If the area is one large space, the readings of minimum 9, preferably more, data loggers may be loaded into DyMap: Dynamic Mapping Software for visual representation of the many graphs in moving colours. Using Dymap, it is easy to see where the heat comes from and when and where it is lost. Dymap works with T-TEC, Thermochron and other data loggers, if the file format is suitable.