Generator Gas Analyzer (GGA)
- Microprocessor-based electronics
- Triple-range sensor/analyzer
- Flameproof, intrinsically safe design (Ex IIC, CE)
- Custom design options
The GGA, designed for application with any generator in use today, can be supplied as a stand-alone monitor with display or as part of a larger system.
Efficiency. Modern high-capacity turbine generators utilize hydrogen gas as a cooling medium because of its excellent heat transfer characteristics and because its low density results in reduced windage losses. But even small decreases in hydrogen purity can cause significant increases in overall generator operating costs. The GGA continuously analyzes generator cooling gas during normal operation to ensure optimum purity levels and maximum operational efficiency.
Safety. Since hydrogen can be explosive when mixed with oxygen, gas purity is an important safety issue. The GGA's continuous monitoring ensures that purity levels remain within acceptable limits.
Purging. The GGA monitors the purity of hydrogen during normal operation; the amount of hydrogen in CO2 during the initial phase of purging; and the amount of CO2 in air in the final stage of the purge process. Because the GGA employs a triple-range sensor/analyzer, the need for additional monitoring devices during the purge process is eliminated.
Equipment. The GGA is a flame-proof, intrinsically safe design (Ex IIC, CE) that includes sensor/analyzer and controller modules within flame-proof enclosures; a display/control panel, mounted in an EMC enclosure; and an optional gas flow indicator with metering valve. The triple-range sensor allows measurement of gas purity during all phases of generator operation.
System Electronics. GGA employs a micro-controller to supervise purity monitoring, calibration, mode selection, sensor unit control, alarm contacts, fault logging, system inputs/outputs, sensor unit linearization, and diagnostics.
Environment One Corporation, 2773 Balltown Road, Niskayuna, NY 12309-1090. Tel: 518-346-6161; Fax: 518-346-6188.