How to understand gas-consuming and gas-free pneumatic amplifiers?
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As the title suggests, what are the differences between these two in terms of structure or principle? It would be great if diagrams could be provided to illustrate this. Additionally, there is a statement on the forum that says, “The commonly used amplifiers are of the throttle type and the balanced type; their principles are different. The throttle type is simpler but less energy-efficient.” The balanced type is a bit more complex and energy-efficient – does that refer to these two types: gas-consuming and gas-free? I’ve learned a lot about this topic on the forum these days, and I would like to express my sincere thanks to everyone!
Thank you for the help. I’m not specialized in instruments or anything of the kind; it’s just that some of my recent work has involved these areas, mainly pneumatic control valves. I have also looked at the explanations, pictures, and web pages you provided over these past few days, but since it’s not my area of expertise, I still can’t quite understand it. For example, in the phrase \"During operation, both valves are basically in a closed state, resulting in very low gas consumption,\" does \"during operation\" refer to the time when the amplifier is actually working (when the valves shouldn’t be closed), or it refers to the state after the output from the amplifier causes the control valve to open to a certain degree and stabilize (at which point both valves should be closed)? Is the diagram you provided (similar to YT-300, I guess) gas-consuming or non-gas-consuming? Could you provide another diagram? All amplifiers I’ve seen come with diaphragms. Does the gas-consuming type refer to those with bellows feedback? I’m not sure if my question has been explained clearly; please forgive me! :L