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Hi all,
I am looking after installation and commissioning of Meteorological Sensors. We commissioned Wind Speed, Direction, Relative Humidity, Barometric Pressure, Ambient Temperature and Pyranometer at a select location. The installation is nearing completion.
But I just happened to plot a graph of Ambient Temperature Vs. Barometric Pressure (Y Axis Pressure and X Axis Temp). In general, I observed that as the temperature rose, the barometric pressure either remained constant OR rose. The Regression Line goes linearly upwards from 25 Deg C to 29 Deg C.
My question is that isn't it contrary to the idea that as temp rises, the air gets hot and rises up and hence the pressure should fall.
I asked the guy doing the commissioning and he said that all equipments are directly imported from MetOne, US and they come with certificate of calibration, which he showed to me. Further, there's nothing the I&C guy can do at site.
Should I be worried about some calibration drifts? Or there can be other factors too, which can affect the Barometric Pressure apart from Ambient Temperature.
Some other information about the site:
The location of our site is at sea coast. The sensors are mounted on a small hill-top adjacent to the sea coast. The process plant is on the slope of the hill. The location of Meteorological sensors is the highest location.
Thanks in advance
Regards,
Grishma
I am looking after installation and commissioning of Meteorological Sensors. We commissioned Wind Speed, Direction, Relative Humidity, Barometric Pressure, Ambient Temperature and Pyranometer at a select location. The installation is nearing completion.
But I just happened to plot a graph of Ambient Temperature Vs. Barometric Pressure (Y Axis Pressure and X Axis Temp). In general, I observed that as the temperature rose, the barometric pressure either remained constant OR rose. The Regression Line goes linearly upwards from 25 Deg C to 29 Deg C.
My question is that isn't it contrary to the idea that as temp rises, the air gets hot and rises up and hence the pressure should fall.
I asked the guy doing the commissioning and he said that all equipments are directly imported from MetOne, US and they come with certificate of calibration, which he showed to me. Further, there's nothing the I&C guy can do at site.
Should I be worried about some calibration drifts? Or there can be other factors too, which can affect the Barometric Pressure apart from Ambient Temperature.
Some other information about the site:
The location of our site is at sea coast. The sensors are mounted on a small hill-top adjacent to the sea coast. The process plant is on the slope of the hill. The location of Meteorological sensors is the highest location.
Thanks in advance
Regards,
Grishma