Accurate measurement and control of gas flow are vital for the successful operation of catalytic systems. Various instruments are used:
1. Mass Flow Controllers (MFCs): Provide precise control over the flow rate by adjusting a valve based on feedback from a flow sensor. 2. Rotameters: Measure the flow rate based on the displacement of a float in a tapered tube. While less precise than MFCs, they are simpler and more cost-effective for certain applications. 3. Pressure Transducers: Convert pressure readings into electrical signals, allowing for real-time monitoring and control of the system’s pressure.