WS8681 Hygrometer %1

[ea5xq]

Hi

After two years I have to change the battery of my WS8681. I also was watching that outside hygrometer was measuring %1 so I believed that it was the reason of run out of battery however, after changing it the value persists, how could I verify that it is working ?

The rest of values (Temp, Wind speed ) seem to be correct.

Thanks

[De Hout]

Perhaps an odd answer, but you can try this simple test:
Place the station in a damp room, like the bathroom.
While/after taking a hot shower it should show a reading of 90+ %, if not it's defective.

[AllyCat]

Hi,

You haven't said where you are located, but 1% Relative Humidity is an exceptionally low value, so is very probably in error.

The User Manual for that family of FO Stations (WH108x is easier to find) indicates that if Temperature, Rain or Wind are "Out of Range" the Console will display "OFL" (Overflow?), but the display range for Humidity is simply 1% to 99%. Therefore, if the sensor produces a "Stupid" value, the Console will still display either 1% or 99%.

A "traditional" way to measure RH is with a "Wet and Dry Bulb Thermometer" and conversion calculators/tables are easily available on the web. Assuming an ambient temperature of 30 degrees C, then for a 1% RH, one calculator refuses to even make a calculation. Another gives a "Wet Bulb" value around 10 degrees C (i.e. wrapping a damp cloth around the dry thermometer bulb would make its temperature fall by 20 degrees C), but the value for 5% is only 0.2 degrees different (i.e. it's a very imprecise calculation). Therefore, I respectfully suggest that the 1% value is probably nonsense.

Cheers, Alan.

[ea5xq]

Thanks for all your comments,

I am located in the Spanish East coast where humidity is around 70-80% so I guess that the sensor is not working properly or the console is not either.

I have written a request to Ecowitt (as they bought Fine Offfset) to get an answer about how to proceed, whether I need to replace the full station or just the sensor.

Thanks