NEWS CENTER
Advantages and Features of High-Temperature, High-Pressure external cage liquid level switch
Time：
2026-09-01
In process industries such as petroleum, chemicals, and power generation, the precise control of liquid levels under high-temperature and high-pressure conditions remains a critical challenge for ensuring both safety and operational efficiency. The high-temperature, high-pressure external cage liquid level switch is a specialized instrument designed specifically to meet these demanding requirements; its key advantages can be summarized as "exceptional reliability" and "resilience in harsh environments."
Its primary advantage stems from a core design featuring fully isolated magnetic coupling. Traditional level switches rely on mechanical seals, which are prone to failure—often due to seal degradation—under high-temperature and high-pressure conditions, leading to media leakage and significant safety risks. In contrast, the external cage liquid level switch utilizes non-contact magnetic signal transmission to achieve complete isolation between the process pressure zone and the electrical components. This fundamental structural innovation enables the device to withstand extreme temperatures of up to 640°C and ultra-high pressures exceeding 42 MPa, effectively eliminating the risk of leakage at the source. It is particularly well-suited for handling hazardous media such as high-pressure steam, high-temperature heat transfer oils, and flammable or explosive substances.
Furthermore, the device offers superior reliability and a long service life. Driven by a mechanical displacer, it features a simple structure and a straightforward operating principle; it is largely unaffected by factors such as media foaming, conductivity, or changes in dielectric constant, boasting a mechanical switch lifespan of over 500,000 cycles. Additionally, the flexibility in material selection—such as the use of 316L stainless steel—ensures not only precise measurement but also effective resistance to corrosion from process media.
Given these characteristics, the product has become a preferred solution for critical process applications such as hydrocracking, boiler blowdown, and crude oil desalting. Naturally, when selecting a model, careful consideration must be given to the density and corrosiveness of the medium to determine the appropriate displacer size and wetted materials, thereby ensuring stable and safe operation throughout the instrument's entire lifecycle.
In summary, by centering on magnetic coupling isolation and delivering reliable performance under extreme conditions, the high-temperature, high-pressure external cage liquid level switch serves as a robust solution for addressing challenging liquid level control issues in the industrial sector.
Prev： What are the application prospects for magnetic flap level gauges?
Next： Performance of Glass Plate Level Gauges in Low-Temperature Operating Conditions
Hot news
Vacorda Instruments Showcases at the 2026 Chengdu Petrochemical Technology and Equipment Expo
Vacorda Instruments made a striking appearance at Booth B225 in Hall 7, showcasing its full range of industrial measurement and control products alongside customized solutions for the petrochemical industry.
On August 12, 2026, the 34th China International Measurement Control and Instrumentation Exhibition (MICONEX) grandly opened at the Hefei Binhu International Convention and Exhibition Center. As a national-level high-tech and "Specialized, Refined, Distinctive, and Innovative" (SRDI) enterprise in the field of industrial automation instrumentation, Sichuan Vacorda Instrument Manufacturing Co., Ltd.
On June 29, 2026, Vacorda Instruments marked the milestone of its 30th anniversary. Since its inception in 1996, the company has remained steadfast in the field of process industry automation instrumentation. Upholding quality through craftsmanship and driving growth through innovation, Vacorda has evolved from a startup team into a professional industrial measurement instrument manufacturer—possessing both core technical capabilities and significant market influence—thereby writing a success story of industrial enterprise.
On June 9, 2026, the 2026 China International Petroleum & Chemical Technology and Equipment Exhibition opened at the Shanghai New International Expo Centre. Sichuan Vacorda Instrument Manufacturing Co., Ltd., a national high-tech and specialized enterprise in the field of industrial automation instrumentation,
Vacorda Instruments showcased at the 31st Azerbaijan International Oil and Gas Exhibition
As a high-tech and specialized enterprise deeply rooted in the field of industrial automation instrumentation, Sichuan Vacorda Instrument Manufacturing Co., Ltd. made a strong debut at this international industry event, showcasing its core measurement and control instruments and customized solutions for the entire oil and gas industry. This demonstrated the company's robust "Made in China" capabilities.
As a high-tech and specialized enterprise deeply rooted in the field of industrial automation instrumentation, Sichuan Vacorda Instruments Manufacturing Co., Ltd. made a strong debut at this international industry event,
Address：No. 41 Chengxi Road, Yantan Industrial Park, Zigong, Sichuan Province, China
E-mail：sales@vacorda.com
Copyright © 2024 Sichuan VACORDA Instruments Manufacturing Co., Ltd.
