[Touch 3 Widget] Humidity value object does not accept 2 byte floating point datatype

[D-K]

Hello

Working with W4K controller and trying to create visualization with Touch 3. During configuration of the existing "Co2/humidity/temp sensor" widget, I don't have the KNX GA with 2 byte floating point datatype to select for humidity value. Only GAs with 05.001 scale datatype are listed for selection.

How to handle/workaround this? Is it possible to get the source file of the widget and modify the datatype filter (I am assuming) implemented? Thank you.

[Erwin-vd-Zwart · Accepted solution]

@D-K 

Humidity is usually a percentage, to solve it just create a scale virtual object and use a small event script on the incoming value.

value = math.floor(event.getvalue() + 0.5)

grp.checkupdate('32/0/0', value)

[Cristiano_Carli_Ballola]

Hello D-K,

if the sensor that measures the relative humidity is our Air Quality Multisensor, you can set both values, 2byte connected, for example, to the Multitouch and 1byte for the W4K widget

[D-K]

@Erwin-vd-Zwart Thank you, works 🙂

@Cristiano_Carli_Ballola Thanks for the info

[Michal_Frajt]

I have many Elsner devices measuring humity. The data type for relative humidity is always 2 byte float value 9.007. I don't get why it is not supported directly. Same problem reported in LM forum around 2016. 

[Thomas_Rohde]

Hi Michal_Frajt!
I will put your request on our feature wishlist. It looks like a small topic.

[Michal_Frajt]

Hi Thomas,

I recommend to check MDT, Gira, Elner devices with humidity meassuring to see that all of them are correctly using 9.007 for the relative humidity. Likely all of them are able to calculate the absolute humidity and the dew point. The dew point is always simple temperature data type. Trouble is with the absolute humidity as there is no correspoding data type defined. Additionally they can output absolute humidity in g/kg or g/m3 what makes it even more complicated.

It would be nice to have the absolute humidity and the dew point available for display as well but just making the basic relative humidity working is a good starting point.

Regards,
Michal

[Thomas_Rohde]

Hello Michal_Frajt!

Many THANKS for the detailed update.
I will add it also to the feature request. Especially the dewpoint could be a very helpful information in combination with climatisation (cooling).