Sensors monitor weather conditions
An
ETL Group product story
Edited by the Engineeringtalk editorial team
Jan 21, 2008
The ETL Group's MET4 and the MET4A have a pressure resolution of better than 1ubar with a total accuracy of better than + or - 0.08hPh over the extended barometric range of 500 to 1100hPa.
The ETL Group has released meteorological measurement systems that provide high accuracy data from barometric pressure, temperature and relative humidity sensors.
The range consists of two models: the MET4 and the MET4A.
Both have a pressure resolution of better than 1ubar with a total accuracy of better than + or - 0.08hPh over the extended barometric range of 500 to 1100hPa.
The temperature resolution is better than 0.01C.
These fully integrated systems are housed in environmental enclosures for stand alone, indoor or outdoor mounting.
Installation hardware and software are included and optional cabling is available.
The MET4 has a solar radiation shield to protect the temperature and humidity sensors from precipitation and solar radiation.
Both the MET4 and the fan-aspirated MET4A use a high-performance pressure port to reduce dynamic pressure errors caused by wind.
Microprocessor-based electronics provide fully temperature-compensated and linearised outputs via a bi-directional RS-232/485 interface.
This serial interface allows complete remote configuration and control of all operating parameters including resolution, sample rates, choice of engineering units, integration time and sampling commands.
Optional configurations include special barometric functions and an internal data logger.
The barometric functions include field pressure, station pressure, altimeter setting, sea level pressure, density altitude, pressure altitude, Q codes-QNH and QFE and WMO pressure tendency codes.
The internal data logger can store over 200,000 high resolution data points.
These innovative systems are suitable for GPS meteorology (precipitable water vapour), crustal observation, tectonic research, weather and climate research studies.
Other areas are surface and maritime weather observation and ground-based altimeter setting indicators.
They also have applications in aerospace, oceanography, process control and in laboratories.
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