(237g) Gas Phase Composition Measurements Using Ultrasonics
AIChE Annual Meeting
2016
2016 AIChE Annual Meeting
Sensors
Sensor Development and Applications
Monday, November 14, 2016 - 4:45pm to 5:00pm
Considering all of the factors which could cause inaccuracy, the standard uncertainty of this SOS measurement is estimated in this instrument to be < ±0.01 m/s. A temperature-speed of sound-composition database has been constructed for 20 industrially important air-vapour and several binary gas systems over a temperature range from 5 to 55 °C. The SOS across the temperature range of 5 to 55 °C and the gas composition has also been independently determined using a highly accurate gas buoyancy method. The average deviation in accuracy between the predicted and the measured composition for 15-55 °C is typically < 0.5%, and for specific test temperatures can be <0.1%. Typical precision is 1: 300000. In comparison with traditional measurement techniques, this technique is not only robust but also has the potential to be faster, simpler, more cost-effective, more precise and more accurate.