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TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 25 Feb 2018, 15:49
by ds106
Hello,
System:
Odroid C2 armbian debian
RFLink Version: 1.1 Revision: 48 Build: 4
TFA Sinus weather station, wind sensor 30.3149 detected as Cresta device

Code: Select all

Cresta;ID=8801;WINDIR=0002;WINSP=0004;WINGS=0011;WINTMP=005c;WINCHL=005c;BAT=OK
wind speed is reported as 0,4 km/h but on Sinus Display I see 0,4 mph

Code: Select all

20;56;DEBUG;Pulses=200;Pulses(uSec)=60,30,810,930,810,930,810,450,330,450,330,930,330,450,330,450,330,450,330,450,810,450,330,450,330,450,330,930,330,450,330,450,810,930,330,450,810,450,330,930,810,930,330,450,330,450,810,930,330,450,330,450,810,450,330,930,330,450,810,450,330,450,330,930,330,450,330,450,810,930,330,450,330,450,330,450,330,450,330,450,330,450,810,930,330,450,330,450,810,450,330,450,330,930,330,450,330,450,810,930,330,450,330,450,330,450,330,450,330,450,330,450,810,930,330,450,330,450,330,450,810,450,330,450,330,450,330,450,330,450,330,930,330,450,330,450,330,450,330,450,810,930,810,450,330,930,810,450,330,450,330,450,330,450,330,450,330,450,330,450,330,930,330,450,330,450,330,450,810,930,330,450,330,450,810,930,810,930,810,930,810,930,810,930,330,450,330,450,330,450,810,930,810,930,330,450,330,450,330,6990;
20;57;Cresta;ID=8801;WINDIR=0002;WINSP=0004;WINGS=0011;WINTMP=005c;WINCHL=005c;BAT=OK;
Regards Götz

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 26 Feb 2018, 23:38
by Stuntteam
I have that same wind speed sensor and on my display it reports in km/h.. and it matches the output of RFlink.
I am not sure where the problem is..

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 27 Feb 2018, 15:23
by ds106
Hello,
it matches only if I switch to mph on Sinus display. Ruud v Gessel's "Cresta weather sensor protocol" describes Windspeed and Windgust as mph, in Plugin_034.c I cant see any convertion to km/h.

Regards Götz

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 17 Mar 2018, 16:18
by ds106
Hello,
domoticz log:

Code: Select all

 2018-03-17 15:40:01.667 RFLink: 20;31;Cresta;ID=8801;WINDIR=0003;WINSP=000b;WINGS=0012;WINTMP=0013;WINCHL=0013;BAT=OK;
2018-03-17 15:40:34.844 RFLink: 20;39;Cresta;ID=8801;WINDIR=0005;WINSP=000b;WINGS=000e;WINTMP=0012;WINCHL=0012;BAT=OK;
2018-03-17 15:41:07.671 RFLink: 20;41;Cresta;ID=8801;WINDIR=0003;WINSP=000b;WINGS=000e;WINTMP=0011;WINCHL=0011;BAT=OK;
2018-03-17 15:41:41.021 RFLink: 20;47;Cresta;ID=8801;WINDIR=0014;WINSP=000b;WINGS=0021;WINTMP=0011;WINCHL=0011;BAT=OK; 
0b -> 11 -> 1,1 1,1mph = 1,77km/h
corresponding Display:
Sinus_kmh.jpg
Sinus_kmh.jpg (6.85 KiB) Viewed 9572 times
Regards Götz

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 28 Aug 2018, 21:34
by ds106
Hello,
I I bought a used rfxcom433 and so I can compare sensor readings.
The attachment Wind.jpg is no longer available
Wind.jpg
Wind.jpg (34.37 KiB) Viewed 9071 times
As you can see the readings for speed and gust are not the same.

Regards Götz

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 29 Aug 2018, 00:35
by Stuntteam
I will re-measure with my device..

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 23 Oct 2018, 23:30
by ds106
Hi,
now its autumn and more windy so differences more visible.
wind2.JPG
wind2.JPG (36.09 KiB) Viewed 8881 times
Regards Götz

Re: TFA Sinus wind sensor (Cresta) reports mph not km/h

Posted: 21 Oct 2021, 14:47
by ds106
Hello,
3 years later and nothing happened :-(
rfl-rfx.jpg
rfl-rfx.jpg (75.25 KiB) Viewed 4725 times
Regards Götz