How to control the flow between the two streams at the same time?

[santhosh]

Hi, it depends on the process requirement.

You may use ratio control if suits.

Check these articles.

What is Ratio Control System?

Ratio control system is a technique where in variable is manipulated to keep it as a ratio proportional to another ratio control system is a special type feed forward control system widely used in the process industries. The objective of ratio control system is to maintain the ratio of two variables at a specified value. [image] In this figure the ratio control system consists of the flow transmitter which senses the flow rate of the first pipe and second flow control. The flow controller con…

What is Ratio Control ? - Example of Ratio Control System