When should the intermediate tank of a product use both liquid level and weight as factors for interlocking settings?
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In the chemical production process, interlocks for reaction vessels or intermediate product tanks are usually set based on parameters such as level, temperature, and pressure. I would like to ask the experts when weight and level should be used as control parameters for intermediate product tanks (containing liquids). Solve
1. For safety settings, when the liquid level reaches a certain percentage of the tank’s maximum capacity (which is 90% in our case), the liquid level interlock shuts off the feed valve of the tank. When the liquid level in an internal floating roof tank drops to the height of the floating roof’s support legs, the liquid level interlock shuts off the discharge valve of the tank. 2. When the process requires it and the necessary measurement conditions are available, for example, when the process or production schedule calls for material transfer every time a certain weight is reached, a mass flow meter or the weight derived from the liquid level can be used to activate interlocked valves in order to switch between storage tanks.