WXforum.net
Weather Station Hardware => Ambient Weather and Ecowitt and other Fine Offset clones => Topic started by: Rover1822 on September 21, 2022, 03:50:07 PM
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Just a simple poll for WS90 owners. Not trying to start a massive debate, just something for others to evaluate.
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I like it but it's a new station and it's always evolving for the better [tup]
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I do not have one (I have a WS80), but I see the WS90 as two things: an ultrasonic wind/temp/hum/solar system which seems to OK; and a rain sensor which seems like an experimental plaything that cannot be taken seriously?
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I do not have one (I have a WS80), but I see the WS90 as two things: an ultrasonic wind/temp/hum/solar system which seems to OK; and a rain sensor which seems like an experimental plaything that cannot be taken seriously?
I (believe to have) got mine providing meanwhile reasonable data in comparison with my WS69 and WH40 rain gauges (and manual reference) [+/- 0.5 mm depending on rain event].
Based on Firmware V.1.1.9
Let's see what I have to modify again after the V.1.2.6 firmware upgrade ...
Once the results are solid, I'll share my gain settings.
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Gyvate, sounds like it works well for you. My rain readings are all over the map from the WS90 when compared to the WH40s, WH65, and Manual gauge. Sometimes way over, sometimes under, on occasion in agreement (within 10%). I would love to have your variance, but I don't. Mine can be as much as 40% - 50% different. I would like to say only at certain rain rates, but I can't , as I see it under almost any circumstance.
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I am doing a test yesterday with the new firmware ver.126 of the ws90
manual collection ................15mm
a ws90 with ver.125 .............11.5mm
another ws90 with ver.126....8.7mm
piezo rain gain 1 to 5 was all 1.00
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I know you only presented one set of data on 2 different threads in here (please don't do that). But do you see that consistently and this is an example? Or , this was just a single reporting?. Reason am I asking , is that some of us, are looking at multiple events and trying to figure it out on calibration. I gave up for now, but may return to data collection.
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just to bring this polling thread back to the top of the list
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I (believe to have) got mine providing meanwhile reasonable data in comparison with my WS69 and WH40 rain gauges (and manual reference) [+/- 0.5 mm depending on rain event].
Based on Firmware V.1.1.9
Let's see what I have to modify again after the V.1.2.6 firmware upgrade ...
Once the results are solid, I'll share my gain settings.
..but look at the rigmarole you've had to go through to even get acceptable readings?! Even then, something changes, and it'll mess it all up again
Do you plan on releasing a book on it, so that others can try and replicate it?
The shear number of posts of the topic show that it's a pointless exercise for the average person.
It is valuable time that is wasted.
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Wind measurement against other reference sensors is very good. It is characterized by high accuracy of speed and direction measurement. The only pity is the measuring range up to 40 m / s. Unfortunately, the Ecowitt WS90 does not measure wind speeds below 1.8 km / h (0.5 m / s). They hide behind the low sensitivity of the device to measure such a laminar wind. The range of this sensor could be better, because in places where other ecowitt sensors receive, the WS90 sometimes has a problem. Moreover, rainfall measurement is rarely precise, this tactile rain gauge is a toy for handheld rain gauges and trough sensors. The light measurement works poorly, it usually calculates UV inaccurately, and this is where Ecowitt should work. The radiation shield from thermo-hygro is poor, without the compensation turned on, the differences reach 1-2 degrees on solar days compared to the reference shield of Barani and the like. With the compensation on, you can see a clear reduction in relation to the reference, the temperature jumps more often and the temperature graph is not as smooth as with the reference shields.
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I have to agree, although, I don't expect my wind measurements to be anywhere near accurate as I am surrounded by housing and trees. What pushed me to try this out was the rain measurement without having to clean a tipping bucket. Unfortunately , I have yet to find any form accuracy. On occasion the rain readings are reasonable when compared to my other sources, on others, like a different galaxy. I even have different consoles with differing calibrations for the unit , like no calibration, and then a unit , with the .75 at (1) position. It also performs badly with high wind driven rain. I know this is I just had the remnants of a hurricane come through (which managed to drop a tree on my roof in 40 MPH winds and break rafters), the numbers from the manual gauge, the other three tipping bucket units (wh65, wh40s) , it was much lower. In other events , it has been much higher.
Frankly, If it was my only unit knowing what I know, I wouldn't trust it for accuracy. Although I was hoping it would assume top dog position amongst my other rain gauges, I just can't trust it for an accurate measurement.
Now, if is this only unit you have , you may be blissfully content as it does report a value for all the sensors, and you may be completely content with that. For those of us with other units to compare to, it gets a little complicated.