rain sensor

Tips, tricks and frequently asked questions
sainbel69
Posts: 26
Joined: 08 Nov 2013, 13:07
Location: Sain-Bel, France
Contact:

Re: rain sensor

Post by sainbel69 » 01 May 2014, 11:11

I did a comparaison between my VP2 and Netatmo.

Raw results are the following (converted to day results from 0 to midngight, to be noted this is not the standard rules but doesn't interfere with the comparison)
Date Netatmo VP2 delta value factor vs VP2
30 3.3 2.8 0.5 -0.18
29 2.4 2.2 0.2 -0.09
28 0.4 0.6 -0.2 0.33
27 1.3 1.4 -0.1 0.07
26 3.7 3.2 0.5 -0.16

Image

Obviously i do not have enough data. Accuracy btw the 2 systems is different due to material used, size of the container, surface ...
Precipitations were not that high and we need to extand that study, for the moment we notice some variations but this is not as bad compared to other comments.
Jerome
Données météo Sain-Bel (Rhone) http://www.meteo-sain-bel.fr/

wopper
Posts: 53
Joined: 09 Mar 2014, 22:13

Re: rain sensor

Post by wopper » 01 May 2014, 11:47

Hi Jerome

well i found out that the speed is of major impact on the measurement results. Im now back at the default stock calibration value of 1.25 and it seems to be most acurate at this moment.

Could you share your calibration value from the unit (you can find that in the settings under your station)

tnx Rob

sainbel69
Posts: 26
Joined: 08 Nov 2013, 13:07
Location: Sain-Bel, France
Contact:

Re: rain sensor

Post by sainbel69 » 01 May 2014, 12:04

I'm still with the original setting: 1.259
Jerome
Données météo Sain-Bel (Rhone) http://www.meteo-sain-bel.fr/

GEORGzer
Posts: 1128
Joined: 14 Jan 2014, 18:14

Re: rain sensor

Post by GEORGzer » 05 May 2014, 20:05

Got mine last week and my "mounting-accessory" today :D

Image

I used a mini microphone stand with a 2,5Kg weight and placed it between my flowerpots.
Microphone stands have 3/8" screws, so I needed an adapter to 1/4" as well.

Image
Image

Nothing covering it, so far. When the Lavender grows, I still can change the height of the stand.
I have a 3-side open roofgarden with the gable roof at the 4th side. So no walls to screw it on.

I tried some calibration today with 100, 150, and 200 ml of water and always got a +/- 1,54.


And I just realized, that I basically live in France now.
I got garden-furniture from Fermob, flowerpots from Bacsac, a tea cloth from Le Jacquard Francais and technology from Netatmo :mrgreen:
Home:
Weather Station (3rd Generation + Rain Gauge, Wind Gauge, 3 additional Indoor Modules)
2 Valves + Relais (Starter Pack), 5 additional Valves

Office:
Thermostat + Relais (2nd Generation)
Healthy Home Coach
Smart Smoke Alarm

GEORGzer
Posts: 1128
Joined: 14 Jan 2014, 18:14

Re: rain sensor

Post by GEORGzer » 18 May 2014, 00:05

So much beautiful rain today :D
Image
Home:
Weather Station (3rd Generation + Rain Gauge, Wind Gauge, 3 additional Indoor Modules)
2 Valves + Relais (Starter Pack), 5 additional Valves

Office:
Thermostat + Relais (2nd Generation)
Healthy Home Coach
Smart Smoke Alarm

biondi
Posts: 142
Joined: 05 Jun 2013, 12:07

Re: rain sensor

Post by biondi » 18 May 2014, 19:19

That is a lot of rain!

GEORGzer
Posts: 1128
Joined: 14 Jan 2014, 18:14

Re: rain sensor

Post by GEORGzer » 18 May 2014, 23:15

biondi wrote:That is a lot of rain!
yup, crappy day :(
Home:
Weather Station (3rd Generation + Rain Gauge, Wind Gauge, 3 additional Indoor Modules)
2 Valves + Relais (Starter Pack), 5 additional Valves

Office:
Thermostat + Relais (2nd Generation)
Healthy Home Coach
Smart Smoke Alarm

DocBeech
Posts: 95
Joined: 19 Feb 2014, 16:25

Re: rain sensor

Post by DocBeech » 19 May 2014, 16:34

Ive got my rain sensor in hand.

Phip
Posts: 159
Joined: 09 Feb 2014, 13:58

Re: rain sensor

Post by Phip » 17 Aug 2014, 15:37

Bonjour à tous,

J'ai installé la semaine passé le pluviomètre.

Pour les gens intéressés par la calibration : Ne touchez pas au réglage par défaut !! Il donne le calcul exact donné ici même un peu plus haut dans les posts.

A savoir que 100ml doivent donner 8,15mm. Après plusieurs essais, les 100ml versés dans le pluviomètre avec une poire à lavement (le mieux que j'ai trouvé pour faire un goutte à goutte pas trop rapide) donnent 79/80 "clacs" des augets.
Et donc, quand on divise 100/80, on obtient 1,25 : Le réglage par défaut de Netatmo, qui donne 8,2mm affiché dans l'application.

En fait, le secret est dans le fait qu'il faut vraiment faire un goutte à goutte pour obtenir le meilleur résultat. Renverser l'eau avec un bouteille par exemple est beaucoup trop rapide et fausse complètement le résultat. Ce que j'ai fait au début !! ;-)

Voilà pour mon expérience, en espérant que cela servira à d'autres !

Philippe.
Thermostat j0347f4

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