A rotary gauge is a specific type of liquid level indicator used on certain containers. It is designed to show the liquid level on a dial gauge.
According to the definition provided:
A rotary gauge is:
- A type of variable liquid level gauge.
- It indicates the liquid level on a dial gauge.
- This dial gauge is installed on an ASME container.
- The level is determined by manually rotating an open-ended tube inside the container.
- This internal tube is connected to a positive shutoff vent valve.
Essentially, it's a mechanical system where turning a valve connected to an internal tube allows a small amount of product or vapor to be vented (via the positive shutoff vent valve) when the tube reaches the liquid level, providing an indication on the dial of the liquid height within the ASME container.
