WXforum.net
Weather Station Hardware => Ambient Weather and Ecowitt and other Fine Offset clones => Topic started by: Mandrake on April 23, 2020, 10:22:26 AM
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Exciting news...
Ecowitt have a temperature sensor in dev/test with a SHT35 on board
I am just so impressed with the company and team, they so listen to their customers!
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What are the differences or advantages to the currently available sensors?
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I hope that they lower the humidity range that is currently limited to minimum 10% RH.
This needs to go into the outdoor WH32 so that we can upgrade current stations. Maybe it should be called the WH35 (I don't think that exists).
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Lucy, advises that this is close to being available, so we will soon see.
I imagine the benefits will be the sensor precision
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Lucy, advises that this is close to being available, so we will soon see.
I imagine the benefits will be the sensor precision
I can confirm, the idea was started from my personal push to ecowitt, supported by our italian community, due to would like to have a better sensor, a lower probe dimension and to obtain the best performances using this sensor in high quality solar radiation shields, like Barani Meteoshield Pro that require a low dimension probe to obtain the best internal airflow
the first prototype, tested by ourselves, was made by an our top user, Raffaello, sometimes present in this forum
if you want I can post an image of probably definitive sensor
Mauro
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A news about the new Ecowitt sensor with sht35 external probe
the price will be 49,99 USD plus shipping
Mauro
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Okay, but does it have the 10% humidity limit removed?
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il prezzo è accettabile , la qualità costa , ci sono sensori che costano lo stesso e non sono nemmeno degni di essere presi in considerazione ;)
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Hi Mauro
Please post some images.
Shipping to Europe will be around $7 and Express $18
Gert
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Hi Mauro
Please post some images.
Shipping to Europe will be around $7 and Express $18
Gert
of course ;)
a probable end product image
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probe inside Meteoshield Pro bottom clamp
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Mauro
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Okay, but does it have the 10% humidity limit removed?
I can officially confirm that the new Wh31/32 sensor with external sht35 probe will not have the humidity lower limit at 10%
Mauro
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I can give the order code for Wh sensors with sht-35 external probe
WH31-EP
WH32-EP
Mauro
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Yesterday a good day to test the performance of the sht35 external probe inside meteoshield pro vs the wh31 standard sensor inside another meteodhield pro
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Mauro
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Hi,
a little presentation about new WH31/32 EP series with external Sensirion SHT35 probe
Mauro
https://drive.google.com/file/d/1Y48DSfO0Q0U7gE1OFjvf0FhLTe1ldl-8/view
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What is the difference between the WH31-EP and WH32-EP?
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What is the difference between the WH31-EP and WH32-EP?
Same difference as WH31 and WH32.
The WH31 is the optional sensor model where you can select up to 8 channels, allowing you to have 8 extra optional sensors.
The WH32 is the given main and only outdoor sensor for the station and also serves as an outdoor override for the WH65 or WS80.
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Any update on when the new sensors will be available?
I want to get a new Ecowitt station, but I want to wait until I can get it with the new sensors.
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Any update on when the new sensors will be available?
I want to get a new Ecowitt station, but I want to wait until I can get it with the new sensors.
the new wh sensors with external probe sht35 are not yet visible on the site but can already be ordered
presentation on the site, manuals, etc will be available shortly
Mauro
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Any update on when the new sensors will be available?
I want to get a new Ecowitt station, but I want to wait until I can get it with the new sensors.
the new wh sensors with external probe sht35 are not yet visible on the site but can already be ordered
presentation on the site, manuals, etc will be available shortly
Mauro
I just got an email from Lucy this morning saying they are not ready for sale and she'll let me know when they are.
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If you can't wait, the sensor alone is available on Amazon
https://www.amazon.com/dp/B07WV924M8/ (https://www.amazon.com/dp/B07WV924M8/)
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If you can't wait, the sensor alone is available on Amazon
https://www.amazon.com/dp/B07WV924M8/ (https://www.amazon.com/dp/B07WV924M8/)
Sensor alone doesn't do me much good though.
I guess it could be a lovely tie tac...
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Any update on when the new sensors will be available?
I want to get a new Ecowitt station, but I want to wait until I can get it with the new sensors.
the new wh sensors with external probe sht35 are not yet visible on the site but can already be ordered
presentation on the site, manuals, etc will be available shortly
Mauro
I just got an email from Lucy this morning saying they are not ready for sale and she'll let me know when they are.
very strange, I have talked today with ecowitt and he send me the new sensor image
I know that they need about 4 weeks to prepare and ship, so I'm confused #-o
received from ecowitt
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Sensor alone doesn't do me much good though
I believe there are online instructions to connect it to the WS-2902 or WH32
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Instructions for DIY SHT35 probe soldering is right here:
https://www.wxforum.net/index.php?topic=37849.msg394555#msg394555
Thanks to Raffaello!
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Any update on when the new sensors will be available?
I want to get a new Ecowitt station, but I want to wait until I can get it with the new sensors.
the new wh sensors with external probe sht35 are not yet visible on the site but can already be ordered
presentation on the site, manuals, etc will be available shortly
Mauro
I just got an email from Lucy this morning saying they are not ready for sale and she'll let me know when they are.
very strange, I have talked today with ecowitt and he send me the new sensor image
I know that they need about 4 weeks to prepare and ship, so I'm confused #-o
received from ecowitt
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Maybe that's what she meant
As for the new outdoor sensor, sorry that you may still need to wait for several weeks.
We'll let you know when it's available.
Best Regards,
Lucy
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Is this thing grill rated ? I need a grill probe
:)
I am kidding
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Okay no more Grilling talk on this thread. I've moved the posts over to Chit Chat section.
Carry over here on this thread to talk about Grilling
https://www.wxforum.net/index.php?topic=39506.0
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Anyone know how to mount this probe in the RS0001 shield?
I may have to get a Davis shield at long last.
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Anyone know how to mount this probe in the RS0001 shield?
I may have to get a Davis shield at long last.
I'd get a Davis Shield or Meteoshield Pro for it. Gonna be wasted otherwise using it on a shield that costs less than the actual temperature sensor by a decent mile. RS0001 shields don't really give the accuracy you need it to be in my opinion. They are only cheap things & will probably overread the temperature by a good bit.
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Well, for now it is in the RS, but I agree with getting a proper shield for it. In fact, ordering one now.
GW1000 and 2 2551 consoles picked it up with no problems. Here it showed a +5% humidity difference, and a -0.2 F temp difference. But that is over the 5 minutes reporting cycle at ecowitt.net.
Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
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Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
Even with a proper radiation shield the transmitter with LCD display needs to go into a weather box. Look for posts by mauro63 on this forum in this very thread, he has shared some pictures of doing just this. See here:
https://www.wxforum.net/index.php?topic=39275.msg404372#msg404372
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As I just recently purchased a Davis shield, I have to say I was impressed when I first pulled it out of the box. It's build quality is great and so far I've loved having down low where I can not only get to it, but check my temp readings to make sure they are where they should be.
May ambient sensor fits in it nicely, but I can appreciate wanting a more 'naked' sensor or a probe that doesn't have a casing around it. I'll probably upgrade to that if Ambient ever gets in the game with one.
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I received my WH32-EP and have it in service. I'd like to share some thoughts about it.
As it came with no instructions whatsoever, you could think it for use outdoors and don't need to protect it. That thought would be incorrect.
With mauro63 and galfert assistance, I have ordered a weatherproof box for the display/transmitter unit of the WH32-EP
This one:
https://smile.amazon.com/dp/B075DG55KS/?coliid=I2S82AZKQ313JQ&colid=RD68HV70GPRH&psc=1&ref_=lv_ov_lig_dp_it (https://smile.amazon.com/dp/B075DG55KS/?coliid=I2S82AZKQ313JQ&colid=RD68HV70GPRH&psc=1&ref_=lv_ov_lig_dp_it)
It has the internal size to accept the display unit.
You will also need somewhere to mount the sensor portion. Currently I have it in the Ecowitt RS0001 which is not a good shield for this sensor. It has no mounting plate so the sensor will flop inside and rest on the plates of the shield. It also doesn't have good performance.
Ideally, you'd get a Barani MeteoShield Professional, but I have went with the Davis 7714 for budget reasons.
Thanks to all who pointed these needed items out when I asked.
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Anyoune got a link to a weather box which will fit the WH-32 EP?
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Anyoune got a link to a weather box which will fit the WH-32 EP?
The post directly above has a link to one and you can find that one or a similar one in the UK
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I've just seen🙄 my bad thank you!
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Also does anyone know what the battery life is like on the
WH-32 EP?
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Should be the same as the WH32/31 which is pretty good.
I have not seen my drop a battery bar yet in 16 months.
If you are using the new WH32-EP which is the external model then I recommend that you purchase the Lithium AA batteries as these will operate in colder conditions better than Alkaline.
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I received my WH32-EP and have it in service. I'd like to share some thoughts about it.
As it came with no instructions whatsoever, you could think it for use outdoors and don't need to protect it. That thought would be incorrect.
With mauro63 and galfert assistance, I have ordered a weatherproof box for the display/transmitter unit of the WH32-EP
This one:
https://smile.amazon.com/dp/B075DG55KS/?coliid=I2S82AZKQ313JQ&colid=RD68HV70GPRH&psc=1&ref_=lv_ov_lig_dp_it (https://smile.amazon.com/dp/B075DG55KS/?coliid=I2S82AZKQ313JQ&colid=RD68HV70GPRH&psc=1&ref_=lv_ov_lig_dp_it)
It has the internal size to accept the display unit.
You will also need somewhere to mount the sensor portion. Currently I have it in the Ecowitt RS0001 which is not a good shield for this sensor. It has no mounting plate so the sensor will flop inside and rest on the plates of the shield. It also doesn't have good performance.
Ideally, you'd get a Barani MeteoShield Professional, but I have went with the Davis 7714 for budget reasons.
Thanks to all who pointed these needed items out when I asked.
I have a WH32-EP on order, but have not received it. I have already received a Davis 7714 for the probe, but have not ordered a weatherproof box for the display/control yet.
Is there a reason you went with the 5.9 x 5.9 x 2.8 inch (150 x 150 x 70 mm) size? I believe the smaller 5.9 x 4.3 x 2.8 inch (150 x 110 x 70 mm) size is big enough to fit the display/control which I have the dimensions to be 4.85 X 1.65 X .55 in. Is there a need for a larger box?
I was actually considering a box with a clear door: https://www.amazon.com/dp/B07RPNWD47/ref=twister_B07RPNWC8V?_encoding=UTF8&psc=1
Any thoughts pro or con on that option?
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I received my WH32-EP and have it in service. I'd like to share some thoughts about it.
As it came with no instructions whatsoever, you could think it for use outdoors and don't need to protect it. That thought would be incorrect.
With mauro63 and galfert assistance, I have ordered a weatherproof box for the display/transmitter unit of the WH32-EP
This one:
https://smile.amazon.com/dp/B075DG55KS/?coliid=I2S82AZKQ313JQ&colid=RD68HV70GPRH&psc=1&ref_=lv_ov_lig_dp_it (https://smile.amazon.com/dp/B075DG55KS/?coliid=I2S82AZKQ313JQ&colid=RD68HV70GPRH&psc=1&ref_=lv_ov_lig_dp_it)
It has the internal size to accept the display unit.
You will also need somewhere to mount the sensor portion. Currently I have it in the Ecowitt RS0001 which is not a good shield for this sensor. It has no mounting plate so the sensor will flop inside and rest on the plates of the shield. It also doesn't have good performance.
Ideally, you'd get a Barani MeteoShield Professional, but I have went with the Davis 7714 for budget reasons.
Thanks to all who pointed these needed items out when I asked.
I have a WH32-EP on order, but have not received it. I have already received a Davis 7714 for the probe, but have not ordered a weatherproof box for the display/control yet.
Is there a reason you went with the 5.9 x 5.9 x 2.8 inch (150 x 150 x 70 mm) size? I believe the smaller 5.9 x 4.3 x 2.8 inch (150 x 110 x 70 mm) size is big enough to fit the display/control which I have the dimensions to be 4.85 X 1.65 X .55 in. Is there a need for a larger box?
I was actually considering a box with a clear door: https://www.amazon.com/dp/B07RPNWD47/ref=twister_B07RPNWC8V?_encoding=UTF8&psc=1
Any thoughts pro or con on that option?
First, I did go with the 4.3 option, don't know why the square one was linked.
I don't see a way for the cable to pass through the box you asked about. For my install, I'm not likely to look at the display anyway.
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I figured it would be simple enough to drill a hole in the bottom panel for the probe to pass through and use some silicon to reseal around the wire once install is complete.
My thoughts were that I could see the display while passing by in the yard and also the door would make battery changes simple. The cost is only $4 more so not a big difference.
Was thinking about ordering one for the lightning detector also.
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I wonder how clear and see through that clear cover lasts after a year in the sun. If you get it...please post a year from now and share a picture.
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I wonder how clear and see through that clear cover lasts after a year in the sun. If you get it...please post a year from now and share a picture.
I just posted that question to Amazon and when I was finished I noticed someone else had posted a similar question earlier today [tup]
Thinking I know who that was. :grin:
Going to wait a few days before purchasing one to see what the feedback will be.
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I just mounted my box. Took maybe 5 minutes. Drilled a couple of pilot holes in the box, slit one cover with a razor, passed the probe through. Used sheet metal screws to fasten it to it's support. Coiled the probe cable into the box, placed the transmitter box in, 4 screws in the top. Took silicone to the cover I slit.
Took longer to write than to do it.
Looks way better to boot, wife approved now!
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Please share pictures of your install.
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I wonder how clear and see through that clear cover lasts after a year in the sun. If you get it...please post a year from now and share a picture.
I just posted that question to Amazon and when I was finished I noticed someone else had posted a similar question earlier today [tup]
Thinking I know who that was. :grin:
Going to wait a few days before purchasing one to see what the feedback will be.
Yep, that was me.
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Please share pictures of your install.
Here's the completed install. Using the RS shield until the Davis arrives.
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I thought the reason to have a radiation shield was for the sensor to be out in the open and away from structures.
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I thought the reason to have a radiation shield was for the sensor to be out in the open and away from structures.
Could be, but that's where mine is mounted.
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Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
Even with a proper radiation shield the transmitter with LCD display needs to go into a weather box. Look for posts by mauro63 on this forum in this very thread, he has shared some pictures of doing just this. See here:
https://www.wxforum.net/index.php?topic=39275.msg404372#msg404372
Color me confused. Lucy says the LED is 'rainproof'
"Thanks for your reminding of the instruction to protect the LCD display.
It's rainproof and if you install it vertically, you may no need to worry about the waterproof issue."
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Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
Even with a proper radiation shield the transmitter with LCD display needs to go into a weather box. Look for posts by mauro63 on this forum in this very thread, he has shared some pictures of doing just this. See here:
https://www.wxforum.net/index.php?topic=39275.msg404372#msg404372
Color me confused. Lucy says the LED is 'rainproof'
"Thanks for your reminding of the instruction to protect the LCD display.
It's rainproof and if you install it vertically, you may no need to worry about the waterproof issue."
Confused me too. Surely installing it any rotation would cause water to get in it regardless? I plan to get this around December time & am not gonna take any risks with it being so-called "rainproof" lol.
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Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
Even with a proper radiation shield the transmitter with LCD display needs to go into a weather box. Look for posts by mauro63 on this forum in this very thread, he has shared some pictures of doing just this. See here:
https://www.wxforum.net/index.php?topic=39275.msg404372#msg404372
Color me confused. Lucy says the LED is 'rainproof'
"Thanks for your reminding of the instruction to protect the LCD display.
It's rainproof and if you install it vertically, you may no need to worry about the waterproof issue."
Pay attention, "you may" is not a warranty!
if you want you can, at your risk, my advice is absolutely to protect the sensor, and I think that some € for a good protection box could be not a problem
My wh-32 EP sensors is outside from months without any kind of problem, is a personal choice ;)
Mauro
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Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
Even with a proper radiation shield the transmitter with LCD display needs to go into a weather box. Look for posts by mauro63 on this forum in this very thread, he has shared some pictures of doing just this. See here:
https://www.wxforum.net/index.php?topic=39275.msg404372#msg404372
Color me confused. Lucy says the LED is 'rainproof'
"Thanks for your reminding of the instruction to protect the LCD display.
It's rainproof and if you install it vertically, you may no need to worry about the waterproof issue."
Pay attention, "you may" is not a warranty!
if you want you can, at your risk, my advice is absolutely to protect the sensor, and I think that some € for a good protection box could be not a problem
My wh-32 EP sensors is outside from months without any kind of problem, is a personal choice ;)
Mauro
Look, I bought and installed a weather tight box. It looks better than a length of cable dangling around. In retrospect I don't feel it was required.
The 'you may' falls in the same category as 'thanks for reminding me'. English as a second language and being polite to customers.
'It's rainproof' isn't up for debate or translation.
I also do not believe that Ecowitt would weasel out of replacing the sensor if it failed due to weather, just not that kind of company in my dealings with them. In the absence of any printed instruction/warranty material, who's to say it is warranted against anything?
If you have an otherwise kind of protected area to mount the LED/transmitter, I'd be comfortable with that. My similar WH32 was outdoors without a box for a year through the seasons we 'enjoy' in New England. I don't get firehose intensity rain here.
I agree with the idea of 'it's a personal choice' or good idea, but disagree with what I was told which was that it needed a weatherproof box.
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Here's a question though. How well do you think the display/transmitter is going to hold up against weather? Seems open to the elements to me.
Even with a proper radiation shield the transmitter with LCD display needs to go into a weather box. Look for posts by mauro63 on this forum in this very thread, he has shared some pictures of doing just this. See here:
https://www.wxforum.net/index.php?topic=39275.msg404372#msg404372
Color me confused. Lucy says the LED is 'rainproof'
"Thanks for your reminding of the instruction to protect the LCD display.
It's rainproof and if you install it vertically, you may no need to worry about the waterproof issue."
Pay attention, "you may" is not a warranty!
if you want you can, at your risk, my advice is absolutely to protect the sensor, and I think that some € for a good protection box could be not a problem
My wh-32 EP sensors is outside from months without any kind of problem, is a personal choice ;)
Mauro
Look, I bought and installed a weather tight box. It looks better than a length of cable dangling around. In retrospect I don't feel it was required.
The 'you may' falls in the same category as 'thanks for reminding me'. English as a second language and being polite to customers.
'It's rainproof' isn't up for debate or translation.
I also do not believe that Ecowitt would weasel out of replacing the sensor if it failed due to weather, just not that kind of company in my dealings with them. In the absence of any printed instruction/warranty material, who's to say it is warranted against anything?
If you have an otherwise kind of protected area to mount the LED/transmitter, I'd be comfortable with that. My similar WH32 was outdoors without a box for a year through the seasons we 'enjoy' in New England. I don't get firehose intensity rain here.
I agree with the idea of 'it's a personal choice' or good idea, but disagree with what I was told which was that it needed a weatherproof box.
what can I say?
probably I have some problems due to the fact that my English language is horrible and I have some difficulties in this way.
I had expressed my opinion, and I will continue to protect my external wh temperature sensor, EP or not, with a solar radiation shield and, in EP versions, also with a good waterproof enclosure.
the original wh enclosure has no protection on batteries compartment, no O-ring, and the side holes can give the opportunity for water infiltrations in case of hard rain events and strong winds
so, not sure that this will happen, but probably yes in some cases
Mauro
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Insurance is always good.
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To me, "waterproof" means you can throw it into a bucket of water and it will still work, like wearing a waterproof wristwatch while swimming. So "rainproof" is a more practical goal for a weather station - withstanding drops of water pelting down on it from some upward direction.
Rich K.
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Hi,
a little presentation about new WH31/32 EP series with external Sensirion SHT35 probe
Mauro
https://drive.google.com/file/d/1Y48DSfO0Q0U7gE1OFjvf0FhLTe1ldl-8/view
The relative humidity diagram shown in Figure 4 for the SHT 35 sure looks flat to me at the low end and doesn't climb as fast at the high end as the SHT30 does.
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That is really at the heart of it - the performance at the low and high extremes of the range. Serious PWS people in some areas want to see good high-humidity performance, while others in dry areas are looking for better performance below 10% RH. Note that while the stated tolerance of the SHT35 does not climb as high as the SHT30, it does start climbing sooner, at 80% instead of 90%.
Rich K.
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Note that while the stated tolerance of the SHT35 does not climb as high as the SHT30, it does start climbing sooner, at 80% instead of 90%.
But....although the SHT35 begins to climb (and lose accuracy) at 80% RH at that point it is still more accurate than the SHT30. By the time the SHT35 reaches 90%RH it is still more accurate than than the SHT30. Then the SHT35 ends the climb at 100% RH at an accuracy of ±2% RH which is where the SHT30 was at its best before it started to climb. So it doesn't matter that that SHT35 begins to climb before the SHT30...what matters is at what accuracy each sensor is at for any given % RH. This is a distinction that is easy to miss and to then draw the wrong conclusion. I'm sure if you look at it more closely now that I've pointed this out that you will agree. Perhaps you did realize this but it doesn't seem to me like it got conveyed clearly enough. I see where someone might draw the wrong conclusion from your statement.
EDIT: I just re-read your post. The more times I read it I think you do get it because of this part, "the stated tolerance of the SHT35 does not climb as high." I just think it is undeserving to point negative attention to the SHT35 losing accuracy sooner than the SHT30 without more clearly explaining that what really matters is that at any given point the SHT35 is still more accurate. Although I guess you did say it. Somehow I would have said it the other way around for clarity. See the last thing I heard is that something is worse on the SHT35. So you are good. Sorry for even bringing this up.
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Note that while the stated tolerance of the SHT35 does not climb as high as the SHT30, it does start climbing sooner, at 80% instead of 90%.
But....although the SHT35 begins to climb (and lose accuracy) at 80% RH at that point it is still more accurate than the SHT30. By the time the SHT35 reaches 90%RH it is still more accurate than than the SHT30. Then the SHT35 ends the climb at 100% RH at an accuracy of ±2% RH which is where the SHT30 was at its best before it started to climb. So it doesn't matter that that SHT35 begins to climb before the SHT30...what matters is at what accuracy each sensor is at for any given % RH. This is a distinction that is easy to miss and to then draw the wrong conclusion. I'm sure if you look at it more closely now that I've pointed this out that you will agree. Perhaps you did realize this but it doesn't seem to me like it got conveyed clearly enough. I see where someone might draw the wrong conclusion from your statement.
correct, I totally agree ;)
Mauro
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Galfert, I do see your point, and what I wrote could have been clearer.
A main consideration to me is that these tolerance lines as drawn are not the actual performance of a sensor. They are simplified boundary lines for stating the standard that Sensirion uses for the units it sells. You can think of it as a quality control measurement criterion. Those individual sensors (or samples from batches) that come off the production process and fall within the stated tolerance line pass; the actual performance graph of a typical sensor unit is somewhere below (i.e. better than) the specified line, and is likely a more irregular line. A sensor that exceeds (is worse than) the specified line gets rejected, or possibly may be stamped and sold under a lower-quality, lower-priced part number. The tolerance line is set so that a commercially viable percentage of the production meets that standard.
So, with good luck, you may happen to get a particular sensor that happens to work appreciably more accurately than the standard line indicates. I remember that a while back some people on this forum were buying a handful of sensors and testing them out to find the best individual performer. In any case, the SHT35 is a step up in performance.
Rich K.
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FYI
Amazon has the SHT35 sensor conversion kit marked down to $10.95
https://www.amazon.com/gp/product/B07ZGD8FKB (https://www.amazon.com/gp/product/B07ZGD8FKB)
I ordered one just for a rainy day project
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I believe that the benefit from doing the SHT35 conversion would not be as good as getting the new WH32-EP. This is because the original WH32 is limited by its hardware design to minimum 10%RH. The SHT30 itself is not limited to minimum 10%RH, it is the implementation by FO in the WH32 that has this limitation. That is just how they designed it. If you go and modify an WH32 with a SHT35 then you will not get the full benefit.
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I'd thought of that.
I live in the South. Not going below 10% isn't an issue.
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Will the SHT35 probes be waterproof? It'd be nice to have a pond, pool, hot tub sensor, etc.
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That's not the ideal use of this premium sensor....
For one the Humidity would read 100%....
I think it would fail if immersed in water fairly quickly though I am not 100% certain.
However all is not lost as Ecowitt has a solution in the works..
They have developed a sensor that is IPX rated and either has a soil temp spike or a long lead to measure water temperature.
This will be called WH34, when released. Its currently in pre-production test so hopefully not too long.
I will report on it very soon as I will be testing it. (Both variants)
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This might work
(https://s.yimg.com/aah/yhst-37697109791737/ambient-weather-wh31p-water-proof-probe-sensor-for-ws-0265-ws-1550-ip-ws-2000-ws-3000-ws-5000-and-observerip-series-weather-stations-4.gif)
https://www.ambientweather.com/amwh31p.html (https://www.ambientweather.com/amwh31p.html)
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I know most are concerned with performance in low humidity but I can’t wait to see how this performs in high humidity, at times I feel my 2902A array is running a bit too high with humidity/dew points. It’s very plausible that my local environment is simply more humid than the airport, more greenery means increased evapotranspiration + far less air movement compared to an airport, and as a result the humidity just builds, maybe?
I want to see how the SHT35 performs with dew points above 70°F (21°C), and especially over 75°F (24°C). The readings on my 2902A array tend to become inconsistent at this point, changing by as much as 2°F (1°C) between updates, as if the sensor is struggling. This morning the dew point here is around 80°F (27°C), and my 2902A is darting back and forth between 79°F (26°C) and 82°F (28°C) lol. Not a big deal for me, but if the SHT35 probe improves on this that’d be great. Also would like to finally see 100% humidity instead of 99%.
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Also would like to finally see 100% humidity instead of 99%.
I wouldn't get your hopes up. Most hardware and software is set up for two digits.
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Got my WH32-EP installed and mounted today in a Davis shield using the waterproof container I posted a few weeks ago. I am waiting for some rubber grommets to seal up the hole in the bottom, but that is more to keep bugs out.
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Got my WH32-EP installed and mounted today in a Davis shield using the waterproof container I posted a few weeks ago. I am waiting for some rubber grommets to seal up the hole in the bottom, but that is more to keep bugs out.
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Sarebbe interessante capire come sta messo dentro la sonda
Non hai fatto qualche foto ?
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Sarebbe interessante capire come sta messo dentro la sonda
Non hai fatto qualche foto ?
I didn't take pics of the probe mounted inside the shield, but I did it just like the Davis manual instructed. Here is a pic from the manual if that helps: [ You are not allowed to view attachments ]
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Sarebbe interessante capire come sta messo dentro la sonda
Non hai fatto qualche foto ?
I didn't take pics of the probe mounted inside the shield, but I did it just like the Davis manual instructed. Here is a pic from the manual if that helps: [ You are not allowed to view attachments ]
ah ok lo hai messo in orizzontale [tup] pensavo fosse in piedi , perciò ero curioso ;) ma il whEP è così? [ You are not allowed to view attachments ]
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ah ok lo hai messo in orizzontale [tup] pensavo fosse in piedi , perciò ero curioso ;) ma il whEP è così?
Yes, exactly like that. (Ecowitt WH32-EP.)
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Got my WH32-EP installed and mounted today in a Davis shield using the waterproof container I posted a few weeks ago. I am waiting for some rubber grommets to seal up the hole in the bottom, but that is more to keep bugs out.
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I am looking for a similar weather proof enclosure to hold the temperature/humidity main unit. Do you have a model or manufacturer for that nice box with a clear door I see in the picture?
Thanks
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This should work
https://www.amazon.com/LMioEtool-Dustproof-Waterproof-Electrical-Transparent/dp/B07PK8K8S2/ref=sr_1_1?crid=2BQ7Q3E1YY5L0&dchild=1&keywords=CLEAR+NEMA+BOX&qid=1635152636&sprefix=clear+nema+box%2Caps%2C95&sr=8-1
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I wonder how clear and see through that clear cover lasts after a year in the sun. If you get it...please post a year from now and share a picture.
Going through some old topics and I came across this post. As requested 18 months later:
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A very useful topic, as it shortened a lot of research for me, especially providing links to some tools from Amazon. Thank you to everyone who replied to this topic. But I have a question. Can anyone confirm whether WH32EP reads the humidity below 10%?
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Specifications: WH32-EP
Power:2 AA batteries(not included)
Sensor Size: 123x42x14mm ; Cabe length: 1M/3FT
Temperature range:-10°C – 60°C (14°F - 140°F)
Temperature resolution:0.1°C, or 0.1°F
Temperature accuracy: ± 0.2°C
Humidity range: 10% ~ 99%
Humidity resolution:1%
Humidity accuracy: ± 1.8%
Sensor reporting interval: 64 seconds
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The sensor actually can measure from -40F - 140F(-40C ~60C) and send the data to receiver. However the screen display of the sensor might not work below 14F(-10C).
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The sensor actually can measure from -40F - 140F(-40C ~60C) and send the data to receiver. However the screen display of the sensor might not work below 14F(-10C).
yes, but the central question was about relative humidity < 10%
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Datasheet says that SHT35 humidity range is 0-100%
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Datasheet says that SHT35 humidity range is 0-100%
@zoomx
yessir, the chip - but there is usually a different performance of the whole system, i.e. what is provided in the end. You don't hang the chip into the air with (what we call in our country) a "Siemens air hook" ;).
I'm sure that Ecowitt know pretty well why they give 10-~99% as specification for the WH32/WH31-EP (and not 0-100).
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Datasheet says that SHT35 humidity range is 0-100%
I'm sure that Ecowitt know pretty well why they give 10-~99% as specification for the WH32/WH31-EP (and not 0-100).
Reply #10 says the 10% limitation would be eliminated. Which is it? Why have a sensor capable of 0-100% but not use it? By not going below 10%, that eliminates pretty much the entire desert SW as a considered PWS if humidity is a concern. We spend at least three months of the year with daily RH's below 10%.
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Datasheet says that SHT35 humidity range is 0-100%
I'm sure that Ecowitt know pretty well why they give 10-~99% as specification for the WH32/WH31-EP (and not 0-100).
Reply #10 says the 10% limitation would be eliminated. Which is it? Why have a sensor capable of 0-100% but not use it? By not going below 10%, that eliminates pretty much the entire desert SW as a considered PWS if humidity is a concern. We spend at least three months of the year with daily RH's below 10%.
I don't mind ...
if this is so, and @Mauro63 works closely with Fine Offset/Ecowitt, so it may be.
so post #10 is interesting, but not a solid reference as long as this is not officially published.
Plus, 10% not being any more the lower limit only says, that the limit is now lower and/but not how much lower ...
It may just be "laziness" at the Ecowitt end not to update their doucmentation.
However, it hasn't been documented/updated yet on their web site / manual.
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Datasheet says that SHT35 humidity range is 0-100%
I'm sure that Ecowitt know pretty well why they give 10-~99% as specification for the WH32/WH31-EP (and not 0-100).
Reply #10 says the 10% limitation would be eliminated. Which is it? Why have a sensor capable of 0-100% but not use it? By not going below 10%, that eliminates pretty much the entire desert SW as a considered PWS if humidity is a concern. We spend at least three months of the year with daily RH's below 10%.
I don't mind ...
if this is so, and @Mauro63 works closely with Fine Offset/Ecowitt, so it may be.
so post #10 is interesting, but not a solid reference as long as this is not officially published.
Plus, 10% not being any more the lower limit only says, that the limit is now lower and/but not how much lower ...
It may just be "laziness" at the Ecowitt end not to update their doucmentation.
However, it hasn't been documented/updated yet on their web site / manual.
I will take care to check this limit and update you as soon as the Fine Offset technicians return from the current holidays in China
Surely it is a typo, if it was not and I do not see technical problems to take advantage of the integral performance of the sensor, I will check if it can be solved through a simple firmware upgrade
Good continuation to all
M.
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Hi everyone,
I can confirm that this is a mistake that will be corrected as soon as possible, actually the wh-32 EP displays and works correctly in the 1-99% range
Good continuation
M.
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I can confirm that this is a mistake that will be corrected as soon as possible, actually the wh-32 EP displays and works correctly in the 1-99% range
Thanks Mauro. Question: A mistake in the manual, of in de software/firmware? :?:
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I can confirm that this is a mistake that will be corrected as soon as possible, actually the wh-32 EP displays and works correctly in the 1-99% range
Thanks Mauro. Question: A mistake in the manual, of in de software/firmware? :?:
No, this is only a mistake relating to the manual and the technical characteristics declared online
thanks for your request
M.
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Hello, I would like to buy an Ecowitt WH-32EP and a waterproof box.
What is the diameter of the SHT35 probe? The box needs a relevant hole in size for passing the probe itself through.
Second question: what is the safe box height to fit the Ecowitt WH-32EP?
Third question (for Italian users): I have seen some AMZN.com links for waterproof boxex in this thread, are there similar products in the italian store?
Thank you.
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You can search for 'scatola derivazione trasparente'
For example this should fit the sensor ( inner measures 132mm x 80mm ), can't say anything about quality: https://www.amazon.it/QWORK-Derivazione-Impermeabile-Coperchio-Trasparente/dp/B08XNMZF2V/ref=sr_1_7?crid=2N68THE3TJ28M&keywords=scatola+derivazione+trasparente&qid=1671659689&sprefix=scatola+derivazione+tra%2Caps%2C123&sr=8-7