Posts: 168
Threads: 0
Joined: Feb 2015
Weather Station: Fine Offset (various)
Country:
30-11-2015, 19:06
(This post was last modified: 30-11-2015, 19:08 by
AllyCat.)
Hi,
Note that the Fine Offset Anemometer generates TWO clicks (pulses) per revolution! So you need to be very careful whether pulses or revolutions are being specified, Also, the FO transmitter counts over a period of two seconds, so the minimum resolution is 0.75 mph, or one revolution/second corresponds to 3 mph (approximately 1.3 m/s or just under 5 km/hr). Many users seem to believe that their FO anemometer under-reads, but measurements suggest that actually they over-read !
Cheers, Alan.
Posts: 5.356
Threads: 333
Joined: Apr 2014
Weather Station: WeatherDuino 4Pro
Country:
If thing the WM918 Anenometer is 1 click per revolution.
Posts: 122
Threads: 11
Joined: Dec 2016
Country:
Hi Werk
I have the 2 Inspeed sensors now and made up some fittings to mount them. i have used your style of mounting the pvc pipe. I am ready to hook it up but the wind vane outputs 0-3.3V and I saw somewhere a calibration routine you suggested for someone but I can not seem to find it now. I have both wired up to plug straight into my V3.1 TX boards but wanted to know about the cal program.
What else should I know about it.?
I see I need to select the inspeed 8 pulse for the speed but it was that 3.3V that I need to do something with?
By the way i got CumulusMX working and also rebooting straight into CumulusMX as well. I really like Cumulus and your weatherduino working together its a reallyneat system
Posts: 122
Threads: 11
Joined: Dec 2016
Country:
I had a Davis one which is analogue of course but it is a 5V one. This one is 3.3V so I will replace that routine and do a recalibrate. Thanks for that Werk. The windspeed for the 8 pulse seems to work fine
I think I will replace my davis wind sensors with these ones as well up at my farm I quite like the look and feel of them
Posts: 122
Threads: 11
Joined: Dec 2016
Country:
I have been using the Inspeed wind vane and 8 pulse wind speed sensor now for 2 weeks and I have to say it is so much better than the Davis and FO ones. I got mine from a guy in the USA they were US$75 each basically and well worth the money although I did have to make up my own adapters to fit them to a T bar as they are imperial sized not metric. I dont get the weird wind gust issues with it like the Davis one and the accuracy is extremely good for the direction as well. I have these setup at home but I will get another set for up at my farm and replace the Davis ones.
At home I got CumulusMX working and working headless and the weatherduino goes into that . CumulusMX is also such a great program and it updates very fast. I have been using CumulusMX doing the WU uploading as well . I think I am going to make both sites exactly the same as I am really happy with both systems