Nov. 19, 2007

New laser technology gives fast moisture detection

New water moisture and carbon dioxide analyzer technology is available that uses tunable laser diode (TDL) spectroscopy to provide accurate and virtually instantaneous measurements of trace gas amounts of H2O or CO2 in the LNG liquefaction process.

By its nature, the TDL based gas detection method is not susceptible to aging affects, making its factory calibration a timeless constant, the company points out. The result is a low maintenance analyzer that does not require consumables or scheduled calibration.

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The system consists of a cell that the sample gas flows through, a tunable laser diode that emits a specific wavelength of light through the gas, an optical detector, and software to analyze and output the results.

The technology, which the firms says is considered a new standard in natural gas measurement, is fast, and the results are reliable. Changes in gas concentrations during dehydration can be seen immediately, without the wet-up and dry-down delays that occur with traditional moisture analyzers, the company says. Furthermore, this TDL sensor does not become desensitized or drift over time.

Source: SpectraSensors Inc., 11027 Arrow Rte., Rancho Cucamonga, CA 91730.

Underwater visualization software

DeepView 2.0, which is a subsea visualization software, and DeepLive real-time data capture module are newly launched items for industry use.

DeepView 2.0 is an advanced visualization and animation tool for creating subsea scenarios that allow multiple concurrent views of an operation with full data recording and replay in 3D.

DeepLive is a supplementary data input module for DeepView and the forthcoming release of DeepSim 2.0. DeepLive accepts GPS and USBL data inputs to show the position-in a 3D visualization-of subsea objects such as a vessel and its ROV or a pipe-lay barge and its anchor lines.

Source: General Robotics Ltd., 7 Walker Ave., Wolverton Mill East, Milton Keynes, MK12 5TW, UK.