Michell Instruments XTC601 gas analyser for hydrogen-cooled generators

Michell Instruments has added an analyser dedicated to monitoring hydrogen-cooled electricity generators to its current range of moisture and oxygen analysers. The XTC601 has been designed with three phase profiles to cover all of the gas analysis requirements for operation and maintenance.

The first phase profile covers normal operation: H₂ Purity (air as the contaminant). It provides continuous online measurements of the atmosphere within the generator. The second phase profile, Purging H₂ with CO₂, indicates when all the H₂ has been removed from the system before routine maintenance. This is vital for safety and avoiding risk of explosions. The third phase profile, Purging CO₂ with Air, ensures that the atmosphere is safe for the engineers to work.

The analyser has three calibration maps to enable measurement in each of the above gas mixtures. Switching between them is simple using the integrated HMI or via an input from the plant control system. Having just one analyser to monitor each of the phases reduces installation costs and capital expenditure. The non-depleting sensor means there are no consumable parts to replace.