In almost every plant, we need to install control valve, shutdown valve, and/or blow down valve. These valves can be operated by power supplies from pneumatic system, hydraulic system, or electrical system. In this post, I want to share you pneumatic power supply for instrumentation and general guidelines for selection. Read More
Category: Control
Pneumatic Control and Electric Control Comparison
As you may already know, control is one of the most important part in plant. To ensure that every operating condition is controllable, we install many control valves that connected to a kind of process parameters, such as pressure, temperature, level, or phase interface. Control of parameter can be done by pneumatic control or electric control.
The availability of pneumatic control has declined, except in one area: gas pipeline industry. The main reason is pressurized gas is available to run the controller. It is essentially free and it does not introduce any additional hazard. Read More