Equipment/Software/Literature

Dec. 4, 2000
A new length-of-stain detector tube can monitor water vapor levels in natural gas pipelines in the range of 2-12 lb of water per MMcf of gas.

Tube monitors water vapor levels in gas pipelines

Click here to enlarge image

A new length-of-stain detector tube can monitor water vapor levels in natural gas pipelines in the range of 2-12 lb of water per MMcf of gas. The direct reading tube No. 177UR has been improved to reduce the interference effect from glycol carry-over from natural gas dehydrators.

The system includes a piston type volumetric pump with lifetime guarantee. Direct reading detector tubes are available for additional substances including hydrogen sulfide, carbon dioxide, mercaptans, and tetrahydrothiophene

Source: Sensidyne Inc., 16333 Bay Vista Drive, Clearwater, FL 33760.

Alarm monitoring system for remote operations

DiaLog, a new alarm monitoring system, notifies producers immediately when a compressor station goes down. The system automatically notifies appropriate personnel whenever alarm conditions exist. Notification over phone, cell phone, pager, or modem 24 hr/day helps ensure coverage for remote or unattended operations.

Central PC-based software performs periodic status checks on multiple units, confirming operability.

The DiaLog system includes the ability not only to call emergency response numbers, but is able to page someone at home or elsewhere so they could respond to the alarm quicker. Another feature is that the system comes in a NEMA 4X enclosure that makes it weatherproof and allows installation in a hazardous location.

Source: Antx Inc., Box 200816, Austin, TX 78720-0816.

Monitor expands detection capabilities

Click here to enlarge image

The new Model 3800 infrared gas unit monitors toxic and combustible gases at ranges from as low as 0-10 ppm, with detection sensitivity as low as 0.1 ppm, to as much as 100% by volume.

Nearly 100 compounds can now be detected by the 3800. These include refrigerants, petrochemicals, solvents, halons, cleaning agents, and other agents common to the chemical industry.

The unit's photoacoustic infrared sensing technology is stable, with virtually no zero drift, the firm points out. This detection method helps reduce interference effects from background gases and humidity. The monitor is available in a NEMA 4 wall mount, a 19 in. rack mount, or an explosionproof enclosure, all with four, front-panel button controls. Each version can monitor one to eight sample point locations and provide three levels of alarm control.

An optional auxiliary sensor can be added. Selections include a catalytic bead sensor for combustible gas detection and electrochemical sensors for monitoring oxygen or carbon monoxide.

Source: MSA Instrument Div., Box 427, Pittsburgh, PA 15230.