GE Sensing Aurora Moisture Analyser
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GE’s Aurora analyser uses tunable diode laser absorption spectroscopy (TDLAS) to measure moisture in natural gas rapidly and accurately. The analyser is suitable for installation in hazardous areas and operates over a wide range of environmental conditions. Aurora’s fast response quickly alerts and documents when moisture concentrations are out of compliance. Once process upsets are corrected and the gas dries out, the fast response enables natural gas to be cleared for entry into the “energy grid.”
GE’s experience in moisture measurement includes aluminium oxide, polymer capacitance and chilled mirror sensors. GE’s heritage also includes the development of the first injection diode laser in 1962 by Dr. Robert Hall in Schenectady, NY. The compact and inexpensive diode laser made it possible for compact discs, laser printers and fibre optic telecommunications.
The new Aurora TDLAS hygrometer enables natural gas processing and transportation facilities to monitor moisture content in real time with high precision and reliability.
The Aurora TDLAS hygrometer for natural gas is a system designed to continuously monitor the moisture content in natural gas. It fundamentally measures the partial pressure of water vapour (water in the gas state). With the simultaneous measurement of pressure and temperature, the Aurora provides all of the commonly used moisture units, including:
- Volume ratio in parts per million by volume (ppmv)
- Absolute humidity in lbs per million standard cubic feet (lbs/mmscf) or milligrams per cubic meter (mg/m3)
- Dew point temperature in °C or °F
- Pressure dew point in °C or °F
