Auto Sugar Bag Filling Station
The implementation of total automation of packing and filling station in sugar factories is not followed in some industries to
Problem on Solar Hot Air Collector and Variable Speed Fan
This solar hot-air collector bank uses a variable-speed fan as the final control element, the temperature controller commanding the fan
Identify the Purpose of Flow Ratio Controller
Identify the purpose of the flow ratio controller FFC-41 in this distillation process piping and instrumentation diagram (P&ID). Flow Ratio
Problem on Weigh feeder
Weigh feeders are conveyor belts equipped with load cells to measure the weight of material on a section of the
Stripper Overhead Temperature Control System
The stripper overhead temperature control system (loop #21) works adequately, but not as good as it could. In its present
How to Implement Ratio Control in this System?
A variety of chemicals are added to raw water when treating it for human consumption, and also when treating water
Questions on Ratio Control System
A byproduct of the kraft process used in the paper industry for turning wood chips into pulp is a liquid
Fault in the Temperature Loop
An operator tells you the stack temperature of this incinerator is running high as indicated by TIC-37. The setpoint is
Temperature Controller Problem
Suppose a chemical reactor is heated by steam. A temperature controller varies the amount of steam admitted to a “jacket”
How Valve Positioners act as Cascade Control Systems in a Loop?
Explain how all valve positioners essentially act as cascade control systems in a loop, and why valve positioners generally improve