Ring-21 Compact Level Switch for Small Vessels and Pipelines
Ring-21 compact level switch is designed for liquid level detection in installations where space is limited. It works well in small tanks, narrow vessels, pipelines, and compact process connections. Because of its short fork body and compact overall structure, it fits applications where larger level switches are not practical.
This model is a tuning fork liquid level switch with a fork body length of 38 mm, an overall length of 160.5 mm, and a maximum diameter of 31.5 mm. It is suitable for liquids with densities as low as 0.7 g/cmยณ. As a result, it can support a wide range of general liquid level control tasks in compact process systems.
Reliable Tuning Fork Detection with Simple Setup
The switch works on the fork resonance principle. The fork vibrates at its natural frequency during operation. When liquid touches the fork, the vibration frequency drops. The piezoelectric sensing element detects this change, and the electronics convert it into a switching signal. This design gives the device stable and reliable switching performance.
Ring-21 compact level switch does not require calibration. Therefore, users can install it quickly and start operation with less setup work. Its switching point does not depend on the electrical properties of the liquid, which helps keep the signal stable in routine industrial use.
Durable Design for Confined-Space Applications
The switch uses a stainless steel housing and a compact body, so it provides good durability in industrial environments. Its small size makes it especially useful in pump protection systems, narrow pipelines, and process points with limited installation space. In addition, the simple mechanical design helps reduce maintenance needs over time.
Because the switch has no complex moving mechanism, it offers dependable operation and long service life. This makes it a practical choice for users who need a cost-effective level switch for everyday industrial applications.
Typical Applications
Ring-21 compact level switch is widely used in confined-space applications that require economical liquid level detection. Typical uses include pipelines in pump protection systems, small vessels, and general liquid level control processes with temperatures up to 150ยฐC (302ยฐF). It is especially useful in non-explosive environments where space-saving installation and reliable switching are important.
For other liquid level switching solutions, see the [Ring-11 Liquid Level Switch] and the [Ring-21 High Temperature Compact Liquid Level Switch]. The device also follows the basic tuning fork detection principle used in many [vibrating fork level switch] applications.
