Ring-11 Gas-Tight Level Switch for High-Pressure Applications
Ring-11 gas-tight level switch is designed for liquid level detection in industrial applications that involve high pressure, high temperature, toxic gases, or corrosive media. It is based on the proven Ring-11 tuning fork design, but it adds a special gas-tight leadthrough structure to improve sealing reliability and process safety in severe operating conditions.
The switch uses a glass-to-metal sealed connector between the process connection and the instrument head. This sealing structure combines borosilicate glass and stainless steel to create a strong barrier. It helps prevent process liquid from penetrating into the housing over time. It also helps protect the electronics from direct exposure to hot liquid and reduces the risk of accidental leakage under pressure.
Stable Tuning Fork Detection in Difficult Process Conditions
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 and reliable point level detection across a wide range of liquid applications.
The device also performs well in turbulence, air bubbles, foam, build-up, vibration, and changing process conditions. Therefore, it is a practical choice for industrial systems where stable switching is important and process conditions are difficult.
Gas-Tight Protection for Safety and Long-Term Reliability
The gas-tight leadthrough does more than improve sealing. It also helps shield the piezoelectric components from moisture and protects the electronics from harsh process exposure. This supports long-term durability and reliable switching in demanding industrial environments.
The switch offers multiple output options, including relay, transistor, two-wire, and NAMUR. It is also developed according to IEC 61508 and can be used in SIL2 and SIL3 applications. In addition, it carries CE and EAC certifications and complies with HACCP and 3A requirements for suitable hygienic process environments.
Typical Applications
This gas-tight tuning fork switch is widely used in chemical reactors, corrosive liquid storage tanks, pharmaceutical mixing tanks, sterilization vessels, high-temperature pasteurization systems, pressurized fermentation systems, water treatment dosing tanks, offshore storage systems, marine fuel systems, and power plant cooling or steam systems. In these applications, it supports safe and stable liquid level switching under high pressure and high temperature.
For other liquid level switching solutions, see the [Ring-11 Ultra-high Temperature Fork Level Switch] and the [Ring-11 Sanitary Liquid Level Switch]. The device also uses the proven [tuning fork level switch] principle for stable point level detection.
