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 Forecast temperature
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thermiekfabriek
Falchetto

Netherlands
116 Posts

Posted - 13/12/2009 :  22:23:47  Show Profile  Reply with Quote
This year,in september, I fly in the France Alps, with water.
I want to know at a certain height it is below 0 gr C.
In the Duo Discus we had a temperature meter.
I'm interested in the 'forecast temperature' in LK8000. I tested:
- Config -> setup system -> 8 devices -> GPS alt offset = 1000m
- Config -> setup basic -> max temp = 10 gr C
- Configured at 'Infobox Aux' a button for 'forecast temperature', display as Maxtemp.
- The displayed value is '---'.
Is there a explanation why there is no value?

The Btemp value in the SYS menu says 34 gr C (inside it's 20gr C, at the moment). Where is the value Btemp based on?
Nothing found on 'temperature' in XCSoar manual.

Edited by - thermiekfabriek on 13/12/2009 22:24:22

Coolwind
Moderator

Italy
8957 Posts

Posted - 13/12/2009 :  22:45:14  Show Profile  Visit Coolwind's Homepage  Reply with Quote
Btemp is the battery temperature.
Have to check about the temperature calculation, did not yet looked at that.
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thermiekfabriek
Falchetto

Netherlands
116 Posts

Posted - 22/12/2009 :  14:14:30  Show Profile  Reply with Quote
Can this topic be moved to change request.
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Coolwind
Moderator

Italy
8957 Posts

Posted - 22/12/2009 :  15:44:19  Show Profile  Visit Coolwind's Homepage  Reply with Quote
OAT (outside air temperature) is now correctly managed in 1.17g
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thermiekfabriek
Falchetto

Netherlands
116 Posts

Posted - 22/12/2009 :  19:24:06  Show Profile  Reply with Quote
great!
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thermiekfabriek
Falchetto

Netherlands
116 Posts

Posted - 28/12/2009 :  21:34:44  Show Profile  Reply with Quote
1.18a: Checked OAT temp. Read help on this. You need a probe for OAT.

I was thinking of a simple approach, without a probe:
- config -> setup basic -> define 'Max temp' (forecast ground temp)
- 'Forecast Air Temp' (shortname FAT) is calculated.
- FAT temp = Max temp - (0,0065 * height).

Edited by - thermiekfabriek on 28/12/2009 21:35:39
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