Gas flow control system LEGFC series

The LEGFC series enables the end user to inject pressurized nitrogen at constant flow rate through a core sample. The unit is connected to the core holder and controls the gas pressure via a pressure regulator. Three in-line mass flow controllers allow constant flow rate injection. The system is composed of three mass flow controllers, a supply isolation valve, 3 pressure control regulators, a pressure transducer situated at the core inlet and a humidifier vessel mounted on the right side of the control panel.

The latter’s purpose is to protect unaltered cores by saturating the gas with water vapour to prevent connate water vaporization. For a prepared sample (cleaned, desaturated and dried) humidified gas is unnecessary. A supervisory control data acquisition software warrants continuous data logging at specified time, graphical display and parameter modification. An optional single stage gas booster connected to a 2-liter stainless steel cylinder can be provided to prepare the specific quantity of gas required to perform a high pressure gas injection test.