A system is provided. The system includes a combustor assembly that receives a fuel flow. The system includes a pressure sensor disposed within the combustor assembly that measures a pressure of the fuel flow from a fuel supply to a fuel nozzle of the combustor assembly. The system includes a controller communicatively coupled to the pressure sensor. The controller is configured to receive a pressure measurement from the pressure sensor. The pressure measurement is a current operating parameter of the combustor assembly. The controller is configured to determine a predicted fuel flow based at least in part on the pressure measurement, determine a fuel composition factor based on a comparison of the predicted fuel flow with a commanded fuel flow, and adjust control of the combustor assembly based on the fuel composition factor. The fuel composition factor is indicative of a change in a fuel composition of the fuel flow.

Clamping device including sheet metal, wedge-washers, and fastening members. Sheet metal includes first segments and second segment, where each of the first and second segments include conduit-facing end and outwardly-extending end. Conduit-facing ends are joined to each other and wrapped around conduit in opposite directions. Outwardly-extending ends extend in opposite direction to outwardly-extending end. Each outwardly-extending end is bent at bend angle towards a respective conduit-facing end. Wedge-washers are disposed on first and second segments. Each wedge-washer includes sidewall inclined in a direction opposite to bend angle and in contact with a respective outwardly-extending end. Fastening members are disposed on respective wedge-washer.