Process moisture analyser

September 2013 Analytical Instrumentation & Environmental Monitoring

Ametek’s 3050 OLV process moisture analyser provides on-line measurement verification with consistent, reliable and accurate measurements. The analyser monitors natural gas as well as various other industrial gases and gives a fast response to changes in moisture levels.

The heart of the analyser is a quartz-crystal microbalance sensor and sampling system. This provides a high degree of accuracy, repeatability and speed of response compared with other moisture analysers. Even after a high-moisture event, excess water is quickly swept away. For a sudden drop from 1000 ppm to 10 ppm, the Model 3050 OLV reaches 90% of steady-state reading within minutes.

Moisture concentration is measured directly in parts per million by volume, parts per million by weight, or mass of water per standard volume. There is no need for pressure or temperature compensation as the true moisture concentration is totally independent of these parameters. Using an integral moisture generator, the 3050 OLV verifies the accuracy of its measurements. This verification can be programmed at regular intervals, or accomplished by a manual command at any time. During the verification process, the analyser can make any necessary small corrections to its calibration automatically. If a severe calibration problem exists, the analyser will provide an alarm.

Each 3050 OLV is supplied with system configuration software, which provides a graphical user interface to set up analyser parameters. Accuracy is 10% of the reading from 1 ppmv to 2500 ppmv with standard calibration, and sensitivity is 0,1 ppmv, or 1% of the reading, whichever is greater, making the 3050 OLV a fast and accurate instrument. The unit is available in various configurations, depending on the hazardous area classification.

For more information contact Mike Andrews, OEN Enterprises, +27 (0)11 675 4447, [email protected], www.oenenterprises.co.za

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