The operating pressure difference range of a quality flow controller is typically small; to use it normally under high-pressure conditions, special attention must be paid to three points:

Firstly, it is necessary to select MFC that meets the required pressure resistance.

Select product models with a wide range of working pressure differences.

Three, install pressure reducing valves before and after the MFC gas line to stabilize the inlet pressure. Add a back pressure valve downstream of the MFC to stabilize the pressure in the reaction chamber and at the MFC outlet. Adjust the pressure reducing and back pressure valves appropriately to ensure that the MFC operating pressure difference does not exceed the specified range (refer to the high-pressure operating diagram below).

By achieving these three points, MFC can operate stably under high-pressure conditions.