Emerson Rosemount Model 500 Retrofit Instructions page 17

Retrofit Instructions
SK-07781
2. Make a single run with calibration gas and see how close the chromatogram is when
3. Continue to make single runs and adjust the carrier pressure until it looks close to
4. If necessary, make any required valve timing changes to bring the GC back to full
Rosemount Model 500 Helium to Hydrogen Gas Conversion Kit
compared to the chromatogram with helium. If it is too fast, reduce the carrier
pressure. If it is too slow, increase the carrier pressure.
what it was with the helium carrier.
function.
Use the following guide to help in valve adjustments. The guide is specific to C6+
BTU analysis, backflush to measure, dual column arrangement, but can be used for
any valve timing adjustments required using the appropriate valve and component.
Installation
September 2019
17