Rain Calibration question

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Devabhai
Posts: 2
Joined: 23 Dec 2019, 08:18

Rain Calibration question

Post by Devabhai » 13 Feb 2020, 18:41

I tried to calibrate my rain gauge. Did 3 passes of 100ml of liquid each time.

First pass was too fast as I heard few double clicks and I got 69
Second pass I went slower and got 63
3rd pass I did very slow, made sure to only get single clicks and got 66snaptube.cam/ syncnet.onl/telegram-web/ 9apps

So my value is 100/66 = 1.51ml offset. Does that sound correct?

I read one old thread from 2014 that suggested to pour 200ml of liquid and adjust the offset to read 16.3mm but I wasn't able to match 16.3mm as offset topped out at 3ml and it only gave me 7.9mm.

Do my calculations sound correct?

thank you

Chiara_Netatmo
Posts: 161
Joined: 15 Jun 2017, 13:54

Re: Rain Calibration question

Post by Chiara_Netatmo » 26 Feb 2020, 14:42

Hello,

For the calibration of the Rain gauge you need to use 100 ml of water.
Please check this article to know more https://helpcenter.netatmo.com/en-us/sm ... ain-sensor

Thank you

philbloc
Posts: 3
Joined: 21 Dec 2019, 17:41

Re: Rain Calibration question

Post by philbloc » 05 Jun 2020, 12:38

"Slowly" doesn't seem like very precise instructions...

GEORGzer
Posts: 1576
Joined: 14 Jan 2014, 18:14

Re: Rain Calibration question

Post by GEORGzer » 05 Jun 2020, 14:23

Just pour slowly enough so the water can constantly drain away and won‘t fill up the funnel.
Home:Weather Station (V3 + Rain Gauge, Wind Gauge, 3 additional Indoor Modules), Valves Starter Pack + 5 additional Valves, Smart Video Doorbell
Office: Thermostat (V2), Healthy Home Coach, Smart Smoke Alarm

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Brieuc_Netatmo
Posts: 2967
Joined: 02 Jan 2014, 11:20

Re: Rain Calibration question

Post by Brieuc_Netatmo » 05 Jun 2020, 14:24

Hi,
"Slowly" means a little bit faster than "drop by drop", but slower than when you pour your favorite drink in a glass ;)
It's quite hard to be more precise than this but let me try: the goal is to precisely count how many times the buckets "knocks" for a precise amount of water poured. You need to make sure that the water does not exit the bucket before having being "counted", which can happen if the water is poured too fast. Pouring the water too fast can also add irrelevant "knocks".
So if you have time to do so, the slower you'll pour the water, the better will be the calibration. You can also do the calibration multiple times, at different pouring speeds, and deduct the average of all your tests.
Brieuc - Netatmo Team

GEORGzer
Posts: 1576
Joined: 14 Jan 2014, 18:14

Re: Rain Calibration question

Post by GEORGzer » 05 Jun 2020, 14:28

Tell us Brieuc, like pouring Château Margaux? 😄
Home:Weather Station (V3 + Rain Gauge, Wind Gauge, 3 additional Indoor Modules), Valves Starter Pack + 5 additional Valves, Smart Video Doorbell
Office: Thermostat (V2), Healthy Home Coach, Smart Smoke Alarm

Not a Netatmo employee

Brieuc_Netatmo
Posts: 2967
Joined: 02 Jan 2014, 11:20

Re: Rain Calibration question

Post by Brieuc_Netatmo » 05 Jun 2020, 14:51

Hahaha 😂 just a bit slower though ;-)
Brieuc - Netatmo Team

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