Topic: WS-2000 vs WS-2902A - List of differences

[PaulaSchlotterbeck]

Thank you for this excellent overview! The information has helped me decide between the two systems. I hope to place an Amazon order for a WS-2000 today. 

[G.Brown]

2000 has a separate barometric pressure sensor, the indication of which is of no use after you have calibrated your console... afaict?

[galfert]

2000 has a separate barometric pressure sensor, the indication of which is of no use after you have calibrated your console... afaict?

The WS-2000 console has no barometric sensor built in. The included and separate barometric sensor constantly provides barometric pressure data to the console. Of course it is needed! The calibration that you do on the WS-2000 is an override of the raw data coming from that external sensor. This sensor is part # WH32B. This sensor also provides the primary indoor temperature and humidity. You can only have one WH32B. If you want additional indoor temperature and humidity then you can add up to eight WH31E sensors. In the WS-2902 all three of these sensors are built into the display.

The decision in the design of the WS-2000 for the indoor temperature and humidity sensor to be external was because the other electronics in the WS-2000 would have caused the temperature sensor to show elevated artificially heated indoor temperature if it had been an internal sensor. Therefore the existence of the WH32B became part of the WS-2000 design. It just became a matter of convenience to also include the barometric sensor with this indoor temperature sensor. The WS-2902 does not suffer from internal heating as the specification of the display are different. The LCD backlighting of the WS-2000 is probably the culprit, whereas the WS-2902 LED type display runs cool.

[G.Brown]

the point I was trying to make - apart from a difference between 2000 & 2902 is that when you have calibrated your console the barometric reading on the separate barometric pressure/temp/humidity sensor will be different from the corrected readings on your console.

[galfert]

Okay I misunderstood your point....got it.

The readout on the WH32B LCD seems to be uncorrected Absolute pressure anyway.

[gszlag]

Off topic pressure discussion spawned from this thread has been split to this other new thread:
https://www.wxforum.net/index.php?topic=41169.0

I think we can discuss pressure related issues with Ambient and other Fine Offset clones in a different thread. There are many threads on this topic already as this is a subject matter that is complex to understand. Let's not go down that rabbit hole in this thread.

Agreed. we are going a little O.T here..No objections if it were to be moved. [UPDATE: moved to link at beginning of this post]

Yes, a rabbit hole which deserves its own thread.

Perhaps the forum should consider a sticky as there are many new users or perhaps even old users that are not calibrating or gave up calibrating their Ambient/Fine Offset weather stations. And that would be a shame.

The forum search can sometimes be a hit or miss affair depending what search terms are used so new users may not be finding the valuable older posts that can help answer their calibration questions.

A sticky with vetted forum URLs could work.

Something to think about?...

[G.Brown]

re : Retains barometer calibration and other settings after power outage. The WS-2902A unfortunately forgets its barometric calibration and all Min Max records when you remove power and batteries as you would need to do when servicing the outdoor sensor array to not get false readings. This is annoying on the WS-2902A.

I have just accidentally come across a simple way of preventing this happening when servicing the outdoor array - just switch your router off!

[galfert]

re : Retains barometer calibration and other settings after power outage. The WS-2902A unfortunately forgets its barometric calibration and all Min Max records when you remove power and batteries as you would need to do when servicing the outdoor sensor array to not get false readings. This is annoying on the WS-2902A.

I have just accidentally come across a simple way of preventing this happening when servicing the outdoor array - just switch your router off!

If you turn off your router then your console still gets bad data from erroneous rain gauge tips, wind direction updates...etc. Therefore turning off the router is not a solution. The data is coming to the console via RF and not WiFi.

[G.Brown]

well all I can say is that it works for me

my router does not send out any data from my console when it is turned off.

[Gyvate]

well all I can say is that it works for me

my router does not send out any data from my console when it is turned off.

I think you misunderstood galfert's comment -
he said that the console (in the context of the earlier post) receives the erroneous data from the sensors, i.e. via a radio frequency (RF) signal and not via the WiFi signal.
Hence switching off the router or the WiFi access point (which can be different things) will not have any impact on that.
Or - in laymen terms:
Switching off the light in front of the front door will not change your indoor light issue caused by a broken bulb of your kitchen lamp.

[G.Brown]

The point of Galfert paragraph that I quoted it that to service to outdoor console without sending erroneous data to the sites you send data to,  ie Weather Underground you can remove the batteries from the console but with the WS- 2902A this would lose the hard earned barometric pressure settings.
If you turn off your router these signals will not be sent out to the sites that you send data to so you do not need to remove the batteries from the WS-2902A and you will not lose the hard earned barometric pressure settings.

[galfert]

My quoted paragraph says nothing about sending bad data to online services.

• Retains barometer calibration and other settings after power outage. The WS-2902A unfortunately forgets its barometric calibration and all Min Max records when you remove power and batteries as you would need to do when servicing the outdoor sensor array to not get false readings. This is annoying on the WS-2902A.

It pertains to the console itself and the data that it retains and shows you. The console receives the sensor data via radio broadcast (no WiFi). If you tip the rain gauge as you would need to do for cleaning you would cause rain tips to register on the console and that stays on the console as accumulated rainfall.
[/list]

[Gyvate]

The point of Galfert paragraph that I quoted it that to service to outdoor console without sending erroneous data to the sites you send data to,  ie Weather Underground you can remove the batteries from the console but with the WS- 2902A this would lose the hard earned barometric pressure settings.
If you turn off your router these signals will not be sent out to the sites that you send data to so you do not need to remove the batteries from the WS-2902A and you will not lose the hard earned barometric pressure settings.

correct - but you still need to correct the erroneous data somehow (unless that's unimportant for you).
They won't be sent out, and they will not be sent out later - only what's the situation at the current time will be sent out once the server connection is reestablished.

What galfert meant (how I read it/him) is that in your console memory you still have the wrong data of that servicing period - and either have to correct them or leave them as they are.
The rainfall total data, as galfert pointed out, will need to be corrected anyway.
Not sure if you can correct the other wrong data, maybe you can delete them. In the WS2000/5000 console that would be the case. But it would be the whole record(s) for that period. The WS-2902 I don't know well enough.
Taking off the batteries from the console would mean having no wrong data (having no data for that period at all), but, as you say, at the cost of losing the barometric forecast for some days (and possibly also the calibration settings).

For you to decide which path you want to go down.
As we say in my language: you cannot get around having to die one (type of) death

The only other (rather hypothetical) way how to do would be taking off the batteries from all your sensors and not from the console - then there are no data recorded, or only empty data (--) recorded.
However, with a WH65 as outdoor array this becomes very difficult as taking off the batteries won't change anything. The high-capacity capacitor, once fully charged, will usually take more than two days in a dark room for itself to run out of power. Maybe after a few very short, cold and overcast winter days it will be expired and run on battery power only. But difficult to find out with layman's means when this is the case.

[mkutche]

Is the WS-2090A compatible with CumulusMX???

[Gyvate]

Is the WS-2090A compatible with CumulusMX???

I have no idea. A WS-2090 is not known to me.
However, should that be a typo and you meant a WS-2902A, it should be compatible if it is on a recent WiFi firmware version.
For what WiFi firmware is (and for many more peices of information), read our thread
https://www.wxforum.net/index.php?topic=40730.0