![]() I think it's simpler to just change the reading on the station to approximate the local benchmark. I don't like this method because it requires a calculation to change the reading on your weather station. What this does is add the offset to whatever reading your weather station hardware is producing. The offset can be a positive or negative number. You can go there and enter an offset for Pressure. In WeatherCat preferences | Misc2 there is an option to Set Calibration Data. There is one other option, that I personally don't recommend it works, but it's not as clean as what I just described. Obviously if your altitude is lower than the benchmark, your relative pressure should be higher than the benchmark. Generally speaking, the higher your altitude is, the lower the pressure will be from the benchmark. Unless your altitude is exactly the same as the benchmark, your pressure should be different anyway. It is normal to have some variance so don't worry about it once you get close. You will need to play with it for a few days to see how closely it will track the MetOffice benchmark. ![]() If you are sure you are doing that correctly, then your easiest option to calibrate it is to repeat the process but this time add 1.8 hpa (or whatever number you want to use to try to make up the difference) to the local benchmark. ![]() Terry, according to your Aercus WS 3083 manual, make sure you have selected Relative Pressure before your enter the pressure that matches the local benchmark.
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