Author Topic: WH 51 Soil Moisture flaky - HP2551  (Read 652 times)

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Offline 2thepoint

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WH 51 Soil Moisture flaky - HP2551
« on: July 26, 2020, 08:52:52 PM »
Hello,
I have a WH 61 Soil Moisture sensor that reads fine on the dashboard of my GW1000(EcoWitt.Net) and SOMETIMES will display on my HP2551.  It may show readings for a day or and without cause the reading disappears from the HP2551.  Tested batteries and they're good.  Router/WIFI is within reasonable proximity.

HP2551BU
firmware: Pro_V1.6.4.
hardware rev: V 2.0
wifi firmware: V 1.5.2


any help is appreciated.

GW1000
HP2551
GW2000
WS90
WH41B
Meteobridge/RPi4

Offline Mandrake

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Re: WH 51 Soil Moisture flaky - HP2551
« Reply #1 on: July 27, 2020, 03:37:31 AM »
The WH51 soil moisture sensors are lower powered than most of the other sensors and do suffer range issues which is compounded often by the fact the sensor is likely low down or at ground level.
Its also a known fact that the Gw1000 is slightly better at receiving the various sensors in terms of sensitivity.
You will probably need to relocate that sensor to nearer the HP2551 console or move the console nearer I am afraid to resolve this issue.
G1ZFO

Ecowitt HP2551A + WH65 Tri-Wing (Wunderground: IGUILDFO67)
Ecowitt GW1000 (Wunderground: IGUILDFO68)
Ecowitt GW1000 (Mk2) test environment driving CumulusMX on a RPi 3b
Ecowitt GW2000 (Test)
Ecowitt WS90 Wittboy - Test
Ecowitt WH51 (x6) Soil Moisture Sensor
Ecowitt WH41 PM2.5 AQM Sensor
Ecowitt WH31 (x8) Thermo/Hygro Sensor
Ecowitt WS80 Ultrasonic Anemometer (pre-prod test)
Ecowitt WH57 Lightning Sensor -test
Ecowitt WH32-EP (SHT35) + Davis 7714 Screen
Ecowitt WH45 CO2/PM2.5/PM10 -Test
Ecowitt WN34 Soil Temp Sensor -Test
Ecowitt WN34 Water Temp Sensor -Test
Ecowitt WN35 Leaf Moisture

Offline 2thepoint

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Re: WH 51 Soil Moisture flaky - HP2551
« Reply #2 on: July 28, 2020, 09:42:56 AM »
Thanks Mandrake!

I believe EcoWitt released a new gen WH51 with a different probe??  Do you know if they addressed the "sensitivity" issue too???

thanks



GW1000
HP2551
GW2000
WS90
WH41B
Meteobridge/RPi4

Offline Mandrake

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Re: WH 51 Soil Moisture flaky - HP2551
« Reply #3 on: July 29, 2020, 03:40:38 AM »
Yes, there is a new variant with a ceramic sheath. (WN51)
I am waiting for some to be delivered in order to test.

However given its still a single AA cell device that will be located at a low level people are likely still to have range issues.
I believe there are some posts on these forums where folks have used a bit of wire clipped to the sensor body to act a aerial to improve the transmission range.
If you have a search you might find that info.

When I have my new sensors I shall share my observations here as normal.
G1ZFO

Ecowitt HP2551A + WH65 Tri-Wing (Wunderground: IGUILDFO67)
Ecowitt GW1000 (Wunderground: IGUILDFO68)
Ecowitt GW1000 (Mk2) test environment driving CumulusMX on a RPi 3b
Ecowitt GW2000 (Test)
Ecowitt WS90 Wittboy - Test
Ecowitt WH51 (x6) Soil Moisture Sensor
Ecowitt WH41 PM2.5 AQM Sensor
Ecowitt WH31 (x8) Thermo/Hygro Sensor
Ecowitt WS80 Ultrasonic Anemometer (pre-prod test)
Ecowitt WH57 Lightning Sensor -test
Ecowitt WH32-EP (SHT35) + Davis 7714 Screen
Ecowitt WH45 CO2/PM2.5/PM10 -Test
Ecowitt WN34 Soil Temp Sensor -Test
Ecowitt WN34 Water Temp Sensor -Test
Ecowitt WN35 Leaf Moisture

 

anything