Sight Flow indicator
How does a sight flow indicator work ?
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How does a sight flow indicator work ?
How does a sight flow indicator work ? : A sight flow indicator gives the operator a window to observe how a process fluid moves through the pipeline.
At a basic level, how a sight flow indicator works is simple: just look through the window to observe the flow in a pipeline. Actually, there are complexities in the many types of indication and construction of the equipment. Each style of indicator works a little differently.
To make the flow easier to see, it may have components that are set in motion by the flow. The sight flow indicator is used for visual inspection by a human operator; it has no electronics for sensing, measurement, or control.
Operators use sight flow indicators to inspect fluids for characteristics such as clarity, color, and foam, or to confirm that there is flow in the pipeline. Often sight flow indicators are used to visually confirm conditions reported by instrumentation and to provide a backup in case of instrument failure or power outage.
What are the types of indication?
There are multiple types of flow indication. A sight flow indicator can be fitted with one of a variety of indication components that make the flow easier to observe and give operators a general idea of flow rate. Each works in a different way and is suited to certain applications. In my experience, even seasoned process engineers are not aware of all the options available, so they are worth reviewing. These include
Rotary flow indicator
Flapper flow indicator
Visual flowmeters
Drip indicator
Ball Flow indicator
Flutter indicator
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