In a receiver controller system, what is the greatest determining factor in using an external restrictor over an internal restrictor?

In a receiver controller system, the distance between the controller and the transmitter is a significant factor when deciding whether to use an external restrictor over an internal restrictor. This is largely due to the need for maintaining pressure and flow consistency over longer pipelines.

When the distance is substantial, pressure drops can occur, which can affect the performance and responsiveness of the control system. An external restrictor allows for better management of flow characteristics over these longer distances, as it can be designed to mitigate the impact of friction losses and ensure that the system operates efficiently across the entire length of the connection.

In comparison, other factors such as the type of fluid, the size of the receiver, or the temperature may influence performance but do not directly pertain to the specific challenges posed by distance in a receiver controller setup. Hence, while they are important considerations in system design, the distance plays a crucial role in choosing the right type of restrictor to optimize the function of the instrumentation and controls system.