Cumulus Support

I am have a problem with my pressure on the WS2080. I reset it, and then let it stabalize for a day where it ended up about 30.24 for relative pressure. The airport 2000ft from me reported 29.76 so I calibrated it to that (pressing menu then enter and changing the value) and it was ok pretty much all day.

So tonight I'm watching it fall to 29.61 and pretty much stay stable there, but the local airport 2000ft away is reporting 29.88 (updated hourly).

How many times do I have to calibrate this? Should it be accurate?

These are very cheap stations, so can't be expected to be super-accurate; Ambient claim an accuracy of 0.08 inHg for them, and yours is apparently outside that. But yours has reported a pressure drop, while in the real world the pressure has risen, which is a more serious problem. These stations apparently have no compensation for temperature - has the temperature in the room where the console is changed significantly?

There are people here who know far more than I do about how the hardware in these stations work, so someone else may be able to offer advice.

steve wrote:These are very cheap stations, so can't be expected to be super-accurate; Ambient claim an accuracy of 0.08 inHg for them, and yours is apparently outside that. But yours has reported a pressure drop, while in the real world the pressure has risen, which is a more serious problem. These stations apparently have no compensation for temperature - has the temperature in the room where the console is changed significantly?

There are people here who know far more than I do about how the hardware in these stations work, so someone else may be able to offer advice.

Everything else on the unit is fine, just the pressure is absolutely awful. I haven't been able to get it to read correctly at all. Airport and other local stations are still reporting 29.88 while my station is recording 29.57 and falling. It seems when the outside temperature fell, so did the pressure. Is the unit taking pressure from outside, or in the room the receiver is in? The room it is in, is pretty much temperature and humidity controlled. Thanks.

The pressure sensor is in the console.

steve wrote:The pressure sensor is in the console.

It appears we've found the problem.



Any way to fix these besides having a completely temperature controlled room?

I've seen graphs like that before. While you would expect the pressure reading to change a little with ambient temperature, following it so closely like that just says 'faulty' to me.

steve wrote:I've seen graphs like that before. While you would expect the pressure reading to change a little with ambient temperature, following it so closely like that just says 'faulty' to me.

Yeah looks like they soldered in two separate temperature sensors instead of one temperature and one pressure! I'll contact the company tomorrow and see what I can do. I really don't want to take this down, pack this all up in the box and send it back to amazon. Thanks.

Definitely something broken, luckily ambient weather said they'll RMA it. Wee!

I have had the same problem with my new weather station.

About a week ago I purchased the N96GY from Maplin and also downloaded Cumulus as my choice of software.

After the first couple of days of monitoring I noticed that the pressure sensor was very difficult to calibrate and that the chart appeared to mimic the trend of internal temperature sensor.

I was actually glad to find this particular thread as it confirmed my belief that something was very wrong with the base unit.

Today (3 December 2012) I returned the defective station to Maplin (central Birmingham store) and they replaced it without quibble.

The new station is now up and running and I will closely monitor the pressure sensor over the coming week.

My station records can be found at http://www.wunderground.com/weatherstat ... IWESTMID31 and also at http://www.coleshillastronomy.co.uk/weather/

As a astronomy enthusiast I look forward to using the N96GY to log continual 5-minute weather reports at my observatory.

My main interest is imaging the sun in the ultra narrow band light of hydrogen alpha.

Delighted if any local members would like to get in touch.

- Dave