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Vantage Vue ?Failing Humidity Unit?

Discussion specific to Davis weather stations
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Vantage Vue ?Failing Humidity Unit?

Post by philpugh »

My ageing (10 years old) Vantage Vue seems to be having a problem with it's Temp/Humidity/WindSpeed module.

5 years ago (or thereabouts) I replaced this sensor PCB due to erratic Temp and Humidity values.

The attached two graphs show the humidity readings for the Vantage Vue and my much newer GW1000 / WH65 (7 Sensor Unit).

The GW1000 seems to be correct in that the humidity increases at night as the air temp falls.

The Vantage Vue shows a drop to virtually 0% humidity as night time approaches and come back again in the morning. All other sensors / values with the VV are in good agreement with the WH65.

The last time I had the problem the temp was displaying as -40C and when I opened the ISS unit up it was absolutely soaking wet inside due to excessive condensation - it was November here in the UK and we get very heavy dew / frosts but NOT -40C !!

So I guess it's the same fault - but caught a little bit earlier - however I don't seem to be able to source a replacement PCB - I don't think Davis is making them for this age of Vantage Vue.

Anyone no any better? Here's hoping
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Phil Pugh
GW1000 + WH65/WH57/WH31; HP2551 + WH68/WH40A
cumulusutils generating website
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