Author Topic: Out Humidity readings VS inside scensor  (Read 2407 times)

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Offline Blizzard

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Out Humidity readings VS inside scensor
« on: October 26, 2008, 08:08:25 AM »
As many of you, my humidity outdoor scensor as started reading low (WRM 968). So far, if i compare with the closes metars, it probably has a 11% low reading, which can be adjusted with the off set. Yes, I'll check for spiders before  ;)

My question is: As any of you tried to establish their low reading using the inside scensor? Otherwise, is worth buying a new scensor?

Thanks

Offline mackbig

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    • Mackie's Main Street, Unionville, ON Canada Weather
Re: Out Humidity readings VS inside scensor
« Reply #1 on: October 26, 2008, 10:56:51 AM »
What do you mean, use the indoor temp/hygro/barometer for the outdoor readings?

You could put it outside to test for a bit, but it can not be used to report back to VWS as an outdoor temp/humidity.  Its also not weatherproof.

You are probably better to either replace the thgr968 or get an additional sensor and do the channel 1 flip...

Andrew

Andrew - Davis VP2+ 6163, serial weatherlink, wireless anemometer, running Weather Display.  Boltek PCI Stormtracker, Astrogenic Nexstorm, Strikestar - UNI, CWOP CW8618, GrLevel3, (Station 2 OS WMR968, VWS 13.01p09), Windows 7-64

Offline sam2004gp

  • Mount Crawford, Virginia
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Re: Out Humidity readings VS inside scensor
« Reply #2 on: October 26, 2008, 11:06:05 AM »
What do you mean, use the indoor temp/hygro/barometer for the outdoor readings?

You could put it outside to test for a bit, but it can not be used to report back to VWS as an outdoor temp/humidity.  Its also not weatherproof.

You are probably better to either replace the thgr968 or get an additional sensor and do the channel 1 flip...

Andrew

To get mine closer, I put out 4 different digital humidity sensors, averaged them, then took that average and adjusted the calibration in VWS for the Sensor to match that (+10).  I still have a channel 1 humidity sensor outside reading, that seems more accurate.  So I compare the two once in awhile. 

Funny thing with the thgr968 sensor......in regards to humidity, it reads lower than sensor channel 1 when temps are low (30-50) and higher then sensor channel 1 when temps are higher(60-80).   (50-60) seems to be the spot when they are both are close.  All of this of course still having the calibration applied.  I figure if I am within 10% of all the other PWS in my area, I am doing good then.
SAM --->>> http://www.mountcrawfordweather.org
OS WMR-968 with a Dedicated PWS Weather Computer running VWS v13.01 p09


 

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