Ring-11 Liquid Level Switch with Gas-tight Leadthrough
The special setting of high-pressure protective gas-tight leadthrough makes Ring-11 High-pressure Liquid Level Switch effectively prevent accidental leakage of high-pressure strong corrosive liquid.
The Ring-11 is a versatile level switch designed for use in all liquids. As a point level sensor with a tuning fork for point level detection, it is specifically engineered for industrial applications across all areas of process technology.
It operates reliably even under challenging conditions such as turbulence, air bubbles, foam generation, build-up, strong external vibration, or fluctuating products.
The gas-tight lead-through version is designed for use in toxic gases, high-pressure, and high-temperature applications. The high-pressure protective gas-tight leadthrough of the Jiwei Ring-11 High-pressure Protection Liquid Level Switch features a glass-metal encapsulation connector that connects the process connection and meter head. The sealing effect is achieved through the cooperation of borosilicate glass and stainless steel, which prevents the fork body from penetrating under high temperature and high pressure over time, protecting the electronic module from exposure to high-temperature liquids. This design also prevents accidental leakage by avoiding the flushing out of the housing.
Furthermore, the high-pressure gas-tight leadthrough also shields the piezoelectric components from moisture, ensuring long-term durability.
This special configuration of the high-pressure protective gas-tight leadthrough allows the Ring-11 High-pressure Liquid Level Switch to effectively prevent the accidental leakage of high-pressure corrosive liquids.
Piezoelectric devices are used to drive vibration and detect changes. When the resonant vibration fork contacts the application medium, its vibration frequency decreases significantly. This reduction in frequency is reflected in the output signal from the piezoelectric detection device. An integrated circuit then analyzes this signal and generates a switch signal in response.
● Precise and reliable operation with a product-independent switching point for consistent performance.
● Minimal time and cost investment thanks to simple setup without the need for a medium.
● The electronic components are modularized for easier maintenance and flexibility.
● The high-temperature extension tube is available with ECTFE and PFA coatings for enhanced durability.
● Output options include relay, transistor, two-wire, and NAMUR for versatile integration into your system.
● Specialized for the process industry, the product is developed according to IEC 61508 and designed for direct use in SIL2 and SIL3 applications, ensuring safety in critical operations.
● Certified with CE for compliance with European safety standards.
| Applicable liquid | Density | ≥0.5g/cm³ |
| Viscosity | 0.1～10000mPa.s ① | |
| Flow velocity | Max. 6m/s | |
| Probe data | Surface finish | Ra<0.5μm ② |
| Vibration frequency | ～1200Hz | |
| Fork length | 40mm | |
| Accuracy | Measurement error | ±1mm |
| Delay | 2mm | |
| Repeatability | 0.1mm | |
| Switching delay | When immersed | 0.5s |
| When laid bare | 1s | |
| Power supply | Relay | 20～253V AC/20～72V DC |
| Two-wire | 10～36V DC | |
| NAMUR | 8.2V DC | |
| Transistor | 6～48V DC | |
| Max. power consumption | 8VA(AC)；1.5W(DC) | |
| Output | Relay | 5A/253V AC/24V DC |
| Two-wire | 8mA/16mA，Alarm<2.3mA | |
| NAMUR | ≤1mA or ≥2.1mA， Fault ≤1mA | |
| Transistor | NPN/PNP | |
| Installation conditions | Process pressure | -1～64bar |
| Process temperature | Regular temperature: -50～150℃ | |
| High temperature: 50～250℃ | ||
| Ambient temperature | -40～70℃ | |
| Storage and transport temperature | -40～80℃ | |
| Overvoltage protection | Relay | Category III, class I |
| Two-wire | Category III, class II | |
| Certificates and approvals | SIL Qualification | SIL2 (HFT=0) / SIL3 (HFT=1) |
| China Compulsory Certification | CCC | |
| China Classification Society | CCS certificate for ships | |
| Explosion-Proof | Flameproof Enclosure: Ex d IIC T6～T1 Gb | |
| Intrinsic Safety: Ex ia IIC T6～T1 Ga | ||
| CE | LVD and EMC Certificates | |
| Ingress Protection | IP66/IP67 | |
| Materials | Housing | Aluminum alloy, , stainless steel |
| Ground terminal | 316L | |
| Thread connection | 316L | |
| Flange connection | 316L, 316L coated Enamel, ECTFE, PFA | |
| Fork | 316L, 316L coated Enamel, ECTFE, PFA | |
| Process seal | Klingersil C-4400 |
② Applicable: for Hygienic Ring-11 only.
● Designed for high-pressure, strong corrosive liquids, ensuring reliable operation in demanding environments.
● Suitable for both hazardous and non-hazardous areas, meeting safety standards for a wide range of applications.
● Automated data transmission to a control room for seamless integration and real-time monitoring.
