GE Panametrics XDP provides a microprocessor-based control platform for the XMTC Thermal Conductivity Transmitter specific to hydrogen analysis for hydrogen cooled generators.
During normal hydrogen cooled electric generator start-up, air is first displaced with carbon dioxide, which in turn, is displaced with hydrogen. Hydrogen cooled generators use hydrogen, because of it's high thermal conductivity, as the purge gas to cool the generator and maximize generator output and life. During shut-down, hydrogen is first displaced with carbon dioxide and, then the carbon dioxide is purged with air. Carbon dioxide is used as the intermediate purge gas during the start-up and shut-down stages for safety purposes - user's do not want to mix air (20.9%oxygen) with hydrogen which might lead to an explosive gas mixture! The XDP/XMTC system can monitor all three generator gas mixtures. Monitoring the gas purge during start-up and shut-down allows user's to minimize the start-up and shut-down cycles by knowing exactly what's going on with the gas purge system. Monitoring the hydrogen purity during normal operation ensures the efficiency and life of the generator.
The XDP microprocessor based electronics package features an infrared through-the-glass keypad, an univeral power supply, analog output, process and fault alarm relays.
For further information about XDP Display Package visit GE Sensing at http://www.gesensing.com
Use the IndustrySearch e-mail feature below and one of the GE Sensing team will respond to your enquiry directly.
Imagination At Work