What type of signal should manifolds for gas cylinders actuate when switching from one header to another?

Manifolds for gas cylinders are designed to efficiently switch from one gas supply header to another, ensuring a continuous flow of gas without disruption. When this switching occurs, it is essential to have a local signal in place. A local signal typically refers to indicators or alarms that are directly connected to the manifold system, which provide immediate feedback to operators about the status of the gas supply.

When transitioning between headers, a local signal allows for real-time monitoring and control. This type of signal can activate alarms or visual indicators at the site where the operators are working, ensuring they are informed of the current state of the gas supply. This immediate awareness is crucial for safety and operational efficiency, as it allows operators to respond promptly if there are any issues during the switch-over process.

In contrast, remote signals would communicate information to a location that is not immediately adjacent to the manifolds, which could delay the timely response needed in the event of a changeover. Emergency signals are typically reserved for critical situations that require immediate action, rather than routine operations like header switching. Backup signals might be related to redundant systems but are not the primary focus during standard operations.

Therefore, using a local signal during the transition from one manifold header to another provides the most relevant and timely information