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Davis humidity stuck at 100%
Houston, I think we have a problem!
I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On Saturday, 31 December 2016 11:32:14 UTC, Keith (Southend)G wrote:
Houston, I think we have a problem! I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman Apply lunar boot! Happy New Year! |
Davis humidity stuck at 100%
On Saturday, 31 December 2016 11:32:14 UTC, Keith (Southend)G wrote:
Houston, I think we have a problem! I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman You need a cold blast of dry air from the east. Happy New Year |
Davis humidity stuck at 100%
On 31/12/2016 11:54, Alan [Guildford] wrote:
You need a cold blast of dry air from the east. Happy New Year Fat chance of that happening ;-) -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
Keith (Southend) wrote:
Houston, I think we have a problem! I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? I had the opposite problem a few weeks ago. Over a period of a few days the RH on my Vantage Pro 2 gradually drifted down to less than 5%. I solved the problem by replacing the temp/RH sensor with one of the new 'enhanced' sensors which are supposedly more accurate. It has all been working fine since then. I'm not really sure what caused the problem but it developed shortly after a spell of wet weather with very strong winds. It's possible that water getting to the sensor was the problem but I'm only guessing. -- Norman Lynagh Tideswell, Derbyshire 303m a.s.l. http://peakdistrictweather.org @TideswellWeathr |
Davis humidity stuck at 100%
On 31/12/2016 12:01, Norman Lynagh wrote:
Keith (Southend) wrote: Houston, I think we have a problem! I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? I had the opposite problem a few weeks ago. Over a period of a few days the RH on my Vantage Pro 2 gradually drifted down to less than 5%. I solved the problem by replacing the temp/RH sensor with one of the new 'enhanced' sensors which are supposedly more accurate. It has all been working fine since then. I'm not really sure what caused the problem but it developed shortly after a spell of wet weather with very strong winds. It's possible that water getting to the sensor was the problem but I'm only guessing. MMmm, could do with the the sun coming out and a good drying wind as I get the feeling dampness has got into the old WMII sensor. I feel like taking the wife's hair dryer out there, um, better not thinking about it... -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On Sat, 31 Dec 2016 11:32:17 +0000, "Keith (Southend)"
wrote: I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? It's probably packed up. If it has, I'm afraid that spares are no longer available, as I discovered when mine suffered a similar fate. -- Alan White Mozilla Firefox and Forte Agent. By Loch Long, twenty-eight miles NW of Glasgow, Scotland. Webcam and weather:- http://windycroft.co.uk/weather |
Davis humidity stuck at 100%
On 31/12/2016 12:23, Alan White wrote:
On Sat, 31 Dec 2016 11:32:17 +0000, "Keith (Southend)" wrote: I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? It's probably packed up. If it has, I'm afraid that spares are no longer available, as I discovered when mine suffered a similar fate. Oh S&^t. -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
"Norman Lynagh" wrote in message ...
I solved the problem by replacing the temp/RH sensor with one of the new 'enhanced' sensors which are supposedly more accurate. It has all been working fine since then. If anyone wants more detail on the *digital* T/H sensors in the Davis VP2 and Vue stations then a detailed description is included in the following topic on the Davis knowledgebase that we maintain: http://www.manula.com/manuals/pws/da...midity-general NB1 This isn't really intended as light reading but the details are there if you need them! NB2 All pre-2006 Davis stations (ie WMII / VP1 / early VP2 models) used an *analogue* T/H assembly which, sad to say, is no longer available from Davis. Supplies were maintained well beyond the 5-year period which is Davis policy for the continued availability of spares after the end of production of particular models, but that stockpile is now totally exhausted. Occasionally spares may turn up eg on eBay and similar sites. John Dann www.weatherstations.co.uk |
Davis humidity stuck at 100%
On 31/12/2016 14:59, JohnD wrote:
"Norman Lynagh" wrote in message ... I solved the problem by replacing the temp/RH sensor with one of the new 'enhanced' sensors which are supposedly more accurate. It has all been working fine since then. If anyone wants more detail on the *digital* T/H sensors in the Davis VP2 and Vue stations then a detailed description is included in the following topic on the Davis knowledgebase that we maintain: http://www.manula.com/manuals/pws/da...midity-general NB1 This isn't really intended as light reading but the details are there if you need them! NB2 All pre-2006 Davis stations (ie WMII / VP1 / early VP2 models) used an *analogue* T/H assembly which, sad to say, is no longer available from Davis. Supplies were maintained well beyond the 5-year period which is Davis policy for the continued availability of spares after the end of production of particular models, but that stockpile is now totally exhausted. Occasionally spares may turn up eg on eBay and similar sites. John Dann www.weatherstations.co.uk Sounds like my options a 1. Forget about the hunidity/dew point 2. Get a new system -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
Keith (Southend) wrote:
On 31/12/2016 14:59, JohnD wrote: "Norman Lynagh" wrote in message ... I solved the problem by replacing the temp/RH sensor with one of the new 'enhanced' sensors which are supposedly more accurate. It has all been working fine since then. If anyone wants more detail on the digital T/H sensors in the Davis VP2 and Vue stations then a detailed description is included in the following topic on the Davis knowledgebase that we maintain: http://www.manula.com/manuals/pws/da...ure-humidity-g eneral NB1 This isn't really intended as light reading but the details are there if you need them! NB2 All pre-2006 Davis stations (ie WMII / VP1 / early VP2 models) used an analogue T/H assembly which, sad to say, is no longer available from Davis. Supplies were maintained well beyond the 5-year period which is Davis policy for the continued availability of spares after the end of production of particular models, but that stockpile is now totally exhausted. Occasionally spares may turn up eg on eBay and similar sites. John Dann www.weatherstations.co.uk Sounds like my options a 1. Forget about the hunidity/dew point 2. Get a new system Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. Might be worth a try, Keith. -- Norman Lynagh Tideswell, Derbyshire 303m a.s.l. http://peakdistrictweather.org @TideswellWeathr |
Davis humidity stuck at 100%
JohnD wrote:
"Norman Lynagh" wrote in message ... I solved the problem by replacing the temp/RH sensor with one of the new 'enhanced' sensors which are supposedly more accurate. It has all been working fine since then. If anyone wants more detail on the digital T/H sensors in the Davis VP2 and Vue stations then a detailed description is included in the following topic on the Davis knowledgebase that we maintain: http://www.manula.com/manuals/pws/da...e-humidity-gen eral NB1 This isn't really intended as light reading but the details are there if you need them! That's an interesting article, John. I hadn't realised it was all so complicated. I recently bought the 7346.174 version to replace my faulty one. I'm very happy with the replacement. Fitting it was no great problem though it is useful to have a second person to hold the 'pile of plates' when the temperature screen is dismantled. I also took the opportunity to give the whole thing a good clean. -- Norman Lynagh Tideswell, Derbyshire 303m a.s.l. http://peakdistrictweather.org @TideswellWeathr |
Davis humidity stuck at 100%
On 31/12/2016 16:05, Norman Lynagh wrote:
Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. Might be worth a try, Keith. I'm struggling to find the page sensor in question for the WMII, is it this one? http://www.weatherspares.co.uk/repla...chip-342-p.asp I'm sure it's linked, but external temperature seems ok. Thanks Norman. -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On 31/12/2016 17:04, Keith (Southend) wrote:
On 31/12/2016 16:05, Norman Lynagh wrote: Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. Might be worth a try, Keith. I'm struggling to find the page sensor in question for the WMII, is it this one? http://www.weatherspares.co.uk/repla...chip-342-p.asp I'm sure it's linked, but external temperature seems ok. Thanks Norman. Also never opened up the white box part inside the enclosure, is it a soldering job changing this sensor? -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
Keith (Southend) wrote:
Houston, I think we have a problem! I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? Humidity here has been = 98% for the last 5 days. Maybe it's right? Check around nearby stations. -- Brian Wakem Lower Bourne, Farnham, Surrey http://www.brianwakem.co.uk/weather Live obs @ 17:11:34 : 5.5C, DP 5.5C, RH 100%, 0.0 mm |
Davis humidity stuck at 100%
"Norman Lynagh" wrote in message ...
Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. ================================================== ============ That's fine for a pre-2006 VP2 and IIRC a VP1, but the WMII T/H sensor assembly is a different item again I'm afraid. TBH I've never really looked in detail, but it may be that the actual 2-pin humidity sensor element from a VP1 board might fit in a WMII assembly. But even if that's the case there's no guarantee that it will restore correct readings. On a WMII, there's no obvious reason why the OAT shouldn't continue to work OK even if the RH is faulty. But I'm guessing that the WMII is now some 12-15 years old and there comes a point where station renewal is the only real option. |
Davis humidity stuck at 100%
Keith (Southend) wrote:
On 31/12/2016 16:05, Norman Lynagh wrote: Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. Might be worth a try, Keith. I'm struggling to find the page sensor in question for the WMII, is it this one? http://www.weatherspares.co.uk/repla...rehumidity-sen sor-chip-342-p.asp I'm sure it's linked, but external temperature seems ok. Thanks Norman. Hi Keith, No, it's this one (watch the line-wrap) http://www.weatherspares.co.uk/davis...dity-analogue- sensor-and-pre-2006-pro2-models-414-p.asp -- Norman Lynagh Tideswell, Derbyshire 303m a.s.l. http://peakdistrictweather.org @TideswellWeathr |
Davis humidity stuck at 100%
JohnD wrote:
"Norman Lynagh" wrote in message ... Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. ================================================== ============ That's fine for a pre-2006 VP2 and IIRC a VP1, but the WMII T/H sensor assembly is a different item again I'm afraid. TBH I've never really looked in detail, but it may be that the actual 2-pin humidity sensor element from a VP1 board might fit in a WMII assembly. But even if that's the case there's no guarantee that it will restore correct readings. On a WMII, there's no obvious reason why the OAT shouldn't continue to work OK even if the RH is faulty. But I'm guessing that the WMII is now some 12-15 years old and there comes a point where station renewal is the only real option. Ah, yes. I see what you mean, John. Sorry, Keith, I seem to have been leading you up a blind alley :-( -- Norman Lynagh Tideswell, Derbyshire 303m a.s.l. http://peakdistrictweather.org @TideswellWeathr |
Davis humidity stuck at 100%
On 31/12/2016 17:33, Norman Lynagh wrote:
JohnD wrote: "Norman Lynagh" wrote in message ... Weatherspares.co.uk are currently selling the pre-2006 analogue T/H sensors for £65. They say the stock is very limited and when they're gone they're gone. ================================================== ============ That's fine for a pre-2006 VP2 and IIRC a VP1, but the WMII T/H sensor assembly is a different item again I'm afraid. TBH I've never really looked in detail, but it may be that the actual 2-pin humidity sensor element from a VP1 board might fit in a WMII assembly. But even if that's the case there's no guarantee that it will restore correct readings. On a WMII, there's no obvious reason why the OAT shouldn't continue to work OK even if the RH is faulty. But I'm guessing that the WMII is now some 12-15 years old and there comes a point where station renewal is the only real option. Ah, yes. I see what you mean, John. Sorry, Keith, I seem to have been leading you up a blind alley :-( No worries Norman, my WMII the first data on my logger is 20:30 15/10/99 so that's over 17 years now! That Steam Train has been heading for a cliff for some time now, I think living in the soft SE has meant that it doesn't get as *weatherered* as some of you up north ;-) It may be time to think seriously about my options in 2017. -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On Sat, 31 Dec 2016 14:33:49 +0000, "Keith (Southend)"
wrote: Oh S&^t. The temperature sensor will continue to work and, from memory, it's relatively easy to modify the software to eliminate the humidity readings and displays - I think. -- Alan White Mozilla Firefox and Forte Agent. By Loch Long, twenty-eight miles NW of Glasgow, Scotland. Webcam and weather:- http://windycroft.co.uk/weather |
Davis humidity stuck at 100%
On Saturday, 31 December 2016 11:32:14 UTC, Keith (Southend)G wrote:
Houston, I think we have a problem! I can't beleive the humidity is still 100% outside, but it's been stuck on it since yesterday evening. Any ideas/solutions? It's not stuck it's jsut acting dawlish for the duration of the spell. there is a twin cored High in the middle of the North Atlantic so it is only fair that you feel a little miffed. Just take note of what happens next and realise that your machine was trying to tell you something: "Look Keith, I can see you're really upset about this. I honestly think you ought to sit down calmly, take a stress pill, and think things over." or "I am putting myself to the fullest possible use, which is all I think that any conscious entity can ever hope to do." |
Davis humidity stuck at 100%
On Saturday, 31 December 2016 17:07:05 UTC, Keith (Southend)G wrote:
I've just picked up a fault in the AE35 unit. It's going to go 100% failure in 72 hours. Also never opened up the white box part inside the enclosure, is it a soldering job changing this sensor? “The thing’s hollow -- it goes on forever -- and er and and -- oh my God! -- it’s full of stars!” |
Davis humidity stuck at 100%
On 31/12/2016 19:08, Alan White wrote:
On Sat, 31 Dec 2016 14:33:49 +0000, "Keith (Southend)" wrote: Oh S&^t. The temperature sensor will continue to work and, from memory, it's relatively easy to modify the software to eliminate the humidity readings and displays - I think. It's on it's way out, but overnight it dropped to 95% but now back to 100% and looking the radar will stay 100% until the morning... -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On 01/01/2017 13:00, Keith (Southend) wrote:
It's on it's way out, but overnight it dropped to 95% but now back to 100% and looking the radar will stay 100% until the morning... Well the rains arrived now at Southend-on-Sea and the hunidity is now 96%. As the song goes, 'I wasn't expecting that' :-) -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On Sun, 1 Jan 2017 15:37:50 +0000, "Keith (Southend)"
wrote: Well the rains arrived now at Southend-on-Sea and the hunidity is now 96%. As the song goes, 'I wasn't expecting that' :-) Looks as though you could be OK. -- Alan White Mozilla Firefox and Forte Agent. By Loch Long, twenty-eight miles NW of Glasgow, Scotland. Webcam and weather:- http://windycroft.co.uk/weather |
Davis humidity stuck at 100%
On 01/01/2017 16:28, Alan White wrote:
On Sun, 1 Jan 2017 15:37:50 +0000, "Keith (Southend)" wrote: Well the rains arrived now at Southend-on-Sea and the hunidity is now 96%. As the song goes, 'I wasn't expecting that' :-) Looks as though you could be OK. I think it's on it's last legs, maybe a dry wind may sort it out for a while, but I think it's days are numbered. Perhaps the 7 days of fog in December has everstretched it. -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
Davis humidity stuck at 100%
On 01/01/2017 17:09, Keith (Southend) wrote:
On 01/01/2017 16:28, Alan White wrote: On Sun, 1 Jan 2017 15:37:50 +0000, "Keith (Southend)" wrote: Well the rains arrived now at Southend-on-Sea and the hunidity is now 96%. As the song goes, 'I wasn't expecting that' :-) Looks as though you could be OK. I think it's on it's last legs, maybe a dry wind may sort it out for a while, but I think it's days are numbered. Perhaps the 7 days of fog in December has everstretched it. Keith, I had a WM2 humidity sensor which did the same under the same circumstances (and same time of year for that matter). The reading was 100% just occasionally coming down to 95% for a short time before back to 100%. John Dann told me to send it to McMurdo (Davis agents) who said they would repair it for free 'if they still had a spare part in the shed'. Part found, repaired and back to me next day. However that was 8-10 years ago. You might just find a WM2 unit being sold on ebay but nothing at present. -- George in Swanston, Edinburgh, 580'asl www.swanstonweather.co.uk |
Davis humidity stuck at 100%
On 01/01/2017 18:27, George Booth wrote:
Keith, I had a WM2 humidity sensor which did the same under the same circumstances (and same time of year for that matter). The reading was 100% just occasionally coming down to 95% for a short time before back to 100%. John Dann told me to send it to McMurdo (Davis agents) who said they would repair it for free 'if they still had a spare part in the shed'. Part found, repaired and back to me next day. However that was 8-10 years ago. You might just find a WM2 unit being sold on ebay but nothing at present. George, from what I can gather it is unlikely I will be able to get a replacement part. It seems to be comparable to other local site on WOW this morning, with some locations higher and others lower for humidity/dew point. I was expecting a minus dew point today, but no one else has one around here either, so perhaps it has dried out a bit now? Still thinking about updating this year all the same. -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
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