Ring-11 ultra-high temperature level switch is designed for point level detection in liquid applications that operate far above the limits of standard high-temperature switches. It builds on the proven Ring-11 design and adds an advanced cooling structure that helps the device maintain stable performance in process temperatures up to 400ยฐC. This makes it a practical choice for industries that need reliable switching in very hot process environments.
The switch uses a special cooling sleeve between the process flange and the vibrating probe. One end of the sleeve connects to the process flange, while the other end connects to the tuning fork assembly. Cooling medium, such as gas or water, flows through the cooling structure and reaches the vibration area through a capillary copper tube. This design lowers the probe temperature and helps protect the piezoelectric ceramic element and internal wiring.
Stable Tuning Fork Detection at Very High Temperature
The switch works on the tuning fork resonance principle. Piezoelectric devices drive the fork into vibration and detect changes in its resonant frequency. When liquid touches the fork, the vibration frequency drops. The electronics detect this change and convert it into a switching signal. This method gives the device stable point level detection in demanding industrial conditions.
The fork body is only 40 mm long, so the device still fits pipelines, narrow vessels, and other restricted installation points. It can detect liquids with densities as low as 0.5 g/cmยณ. It also performs reliably in foam, bubbles, viscous media, and vibration. Therefore, it is well suited for difficult hot liquid applications where switching stability is critical.
Ultra-high Temperature Level Switch for Hazardous Industries
The device offers multiple output options, including relay, two-wire, NAMUR, and transistor. This helps users integrate it into many different industrial control systems. It also carries SIL2 / SIL3, CE, 3C, EAC, intrinsically safe, and flameproof certifications. As a result, it can support safety-critical and hazardous-area applications.
The switch also complies with HACCP and 3A requirements for suitable hygienic applications. Because of its stable detection principle and advanced cooling design, it is a practical solution for users who need safe and reliable point level switching in very hot liquid processes.
Typical Applications
This ultra-high temperature tuning fork switch is widely used in petrochemical tanks, cracking units, reactors, heat transfer oil systems, condensate tanks, waste heat systems, casting cooling water systems, high-temperature lubricant tanks, and hot process vessels. It also works well in new energy applications such as electrolyte tanks and solvent recovery systems. In these environments, it provides reliable switching in processes that combine high heat, difficult media, and demanding safety requirements.
For other liquid level switching solutions, see the [Ring-11 High-Temperature Fork Level Switch] and the [Ring-11 Liquid Level Switch with Gas-tight Leadthrough]. The device also uses the proven [tuning fork level switch] principle for stable point level detection.
