Teledyne Analytical Instruments 2750 details:
The portable Model 2750 accurately and reliably measures hydrogen-in-CO2 and air-in-CO2 during maintenance purging of hydrogen-cooled turbine generators. These measurements assure that the purging proceeds quickly, efficiently and effectively. Switch-selectable ranges on the instrument make it easy to choose the measurement required. Plus, the 2750 features a third range that alerts the user to air leaks in the hydrogen cooling gas and thus helps assure optimum efficiency during normal generator operation.
