WeatherEye indoor Temperature Incorrect Reading

[andrew_sinclair]

Hello,

I was given a http://www.weather-eye.co.uk/details_weather03.asp

which seems to read the internal temperature rather on the high side. I have placed the display unit it alongside several other thermometers and there all align within reasonable limits but the Weather Eye reads 1.2 degrees in the high side. Is there anyway to adjust or calibrate the LCD display readout?

Thank you

Andrew

[daj]

Hi Andrew, welcome to the forum

Is there anyway to adjust or calibrate the LCD display readout?

I do not think you can calibrate temperature, only pressure.

Can you return it as it it sounds like it may be faulty? I appreciate you say you were "given it", does that mean it may be past its warranty period?

[Ned]

It's a rebadged Fine Offset, which many of us here use. As daj said, temperature calibration of the unit isn'r possible, but a correction can be made within Cumulus, so at least it'll be OK on your computer display.

[andrew_sinclair]

Hello, and thank you for the welcome. I will explore the return option as I suspect it may be faulty. Also I have downloaded the Cumulus software and I see that an offset can be added tothat which would correct the display on the PC as mentioned. If the return option is not successful then perhaps this is the way to go.

Andrew

[steve]

I would say 1.2 degrees is well within the expected accuracy (Fine Offset don't quote figures). Mine reads about 2C too low.

[andrew_sinclair]

Hello Steve,

Thanks for your response, that sounds interesting. I had assumed that the accuracy would be slightly better but looking at the manual it doesn't quote a figure so perhaps that's the limit of performance of the unit.

Andrew

[wd40]

The place here in the US that sells FO quotes an accuracy of +or- 2F with a resolution of .2F.

Randy

[Ned]

You get what you pays for!
My internal humidity is hopeless - currently 15% points below a known good source alongside. And I can't correct that....
I got lucky with my internal temps - better than 0.5°C compared to other instruments. The console is slow in responding to changing temps (but is fine in stable conditions) which I surmise is due to poor air circulation through it, when attached to a wall.

[Gina]

Yes, these stations are not accurate and you have to calibrate them in the software (except for pressure). My first read 1.5C high on the outdoor temp, the second is within a degree C (compared with a mercury thermometer). An error of 1.2C would be considered reasonable enough and better than some. If you want in-built accuracy you'll need to pay several times (maybe 5 or 6x) the price of the F.O. stations. IMO they're good value for money but you have to bear in mind that they are cheap for the amount of stuff you get. It's quantity rather than quality.

[andrew_sinclair]

Hello All,

Thank you for the responses, all very useful. What I have done is loaded up the Cumulus software, connected the weather station to the PC in a semi-permanent set up and made a variety of temperature and humidity measurements during the day today against another device which I am reasonably confident about. Accuracy is

Outdoor Temperature is + 3 degrees over-reading
Indoor Temperature is +2 degrees over-reading
Humidity is +7% over-reading

Pressure is the interesting one. The current QNH given by the Bristol Airport METAR is 1003 hPa. My device is reading an absolute value of 1021 hPa. I am 150ft AMSL so calibrating that out at a rate 1hPa per 32ft indicates a relative reading QNH of 1025 hPa approximately so my pressure reading is +22 hPa over-reading

I suspect as wisely mentioned "We get's what we pays for"!

Andrew