KNX Multitouch Pro temperature measurement

[IC_Systems]

Hello dears,

I have observed that the internal temperature reading of the Multitouch Pro (MTN6215-5910) is inaccurate when mounted inside its wall box. However, the reading becomes more accurate when the device is removed from the mounting box.

I did not use any external temperature sensor, relying solely on the internal sensor for temperature measurement.

is there a default value for the internal sensor correcting facture that I should use?

Please refer to the attached pictures for further details.

 

 Both York and MT is showing the ambient temperature

[esteve_budia]

Sometimes it is a problem with the tube that carries the cables, through which air currents are produced. Have you been able to try sealing the pipeline (with a sealant or a simple paper for testing) ?

[Thomas_Rohde · Accepted solution]

Hello IC_Systems!

The topic is a bit tricky as it can be influenced by several topics.
First one is of course is the one Esteve mentioned above.
Another topic can be the wall itself where the product is installed in.
Means, if the wall on the other side has a big temperature difference ... it can influence the temperature measurement in one or the other way.
Another topic is airflow. Depending on the installation place, there can be a bigger airflow, in case the next room has a much different temperature.
Another topic is sunlight. Our product is pretty dark and heats up more quickly as a white one.

Another topic is the time of measurement. It seems your device on top is not using any design frame.
Means, I guess, the airflow can go easily through the device and can react pretty quickly on temperature changes. Our product has no direct openings and is installed within a designframe. This leads to the consequence that our device does not react so quickly on temperature changes.
This gives also the answer for the picture where our device is outside the wall => it measures more accurately and quickly the correct temperature.
Taking all topics from above into consideration, it makes it clear that, there is no "standard correcting value" available. It is always pretty depending on the place of installation and the surrounding environment.