Rosemount™ 2120 Level Switch – Vibrating Fork

Description

Rosemount™ 2120 Level Switch – Vibrating Fork

Reliable Detection Technology For Critical Process Safety

The Rosemount™ 2120 Level Switch is a precision vibrating fork instrument designed for accurate, maintenance‑free level detection across a wide range of liquid applications. Its design embodies Emerson’s philosophy of combining simplicity, safety, and long‑term reliability. The switch is SIL2 IEC 61508 certified and TÜV tested, making it ideal for safety‑critical duties such as overfill protection and leak prevention in industrial storage tanks. Featuring no moving parts and requiring no calibration, the 2120 ensures dependable operation even under extreme process fluctuations. The visible heartbeat LED gives real‑time confirmation of device health, while the magnetic test point allows technicians to perform an easy functional test without system interruption. Together, these features safeguard process integrity while simplifying maintenance.

Flexible Installation Options For Diverse Process Environments

The Rosemount 2120 demonstrates versatility through its compact form and extensive configuration range. Installation is effortless thanks to standardized process connections that fit both sanitary and industrial fittings. The fork’s design supports vertical, horizontal, or angled mounting, enabling precise placement in small vessels or pipelines where space constraints exist. It can be operated in all pressure zones—from full vacuum up to 1450 psi (100 bar)—and in temperatures from −40°F to 302°F (−40°C to 150°C). The adjustable switching delay ensures dependable measurement even under turbulent or sloshing conditions common in agitator tanks. Designed with wide electrical compatibility, it supports multiple output types such as PLC/PNP, Relay, 8/16 mA, and NAMUR, ensuring seamless integration with modern industrial control systems.

High Reliability For Hygienic And Industrial Applications

Built to meet stringent purity standards, the Rosemount 2120 carries 3‑A, EHEDG, FDA, and ASME‑BPE certifications, confirming its suitability for hygienic environments such as food, beverage, and pharmaceutical production. The smooth stainless‑steel surfaces resist residue buildup and support CIP/SIP cleaning cycles, adhering to sanitary process protocols. In heavy‑duty sectors—such as chemical processing, oil & gas refining, and water treatment—the fork’s vibration frequency remains unaffected by viscosity changes (from 0.2 to 10 000 cP) or density variations (down to 37.5 lb/ft³ / 600 kg/m³). These capabilities make the 2120 an all‑purpose instrument adaptable to both sterile biotech processing and rugged industrial handling of viscous fluids or corrosive substances.

Specific Industrial And Hygienic Application Examples

Across various markets, the Rosemount 2120 delivers consistent results:

• Food and beverage manufacturing: ensures proper liquid levels in dairy, brewery, and juice filling lines while meeting FDA hygienic criteria.
• Pharmaceutical and biotech: monitors vial filling systems, bioreactors, and buffers, preventing contamination during critical production stages.
• Chemical industry: offers precise detection of acids, solvents, and resins where calibration stability and explosion‑proof reliability are essential.
• Water and wastewater treatment: safeguards pump protection systems and ensures overflow prevention in settling tanks.
• Oil & gas sector: performs interface monitoring within storage tanks or pipelines under high pressure and temperature extremes.

From sterile environments to high‑pressure petrochemical plants, the 2120 translates Emerson’s technology into tangible process control benefits worldwide.

Advanced Diagnostic Features For Predictive Maintenance

One key advantage of the Rosemount 2120 is its smart diagnostic platform. The fork continuously performs electronic self‑checking, verifying signal consistency and sensor condition. Any deviation triggers immediate notification, allowing operators to schedule preventive maintenance without process failure. The heartbeat LED indicator communicates operational health visually, simplifying troubleshooting during plant walks. Combined with magnetic test capability, engineers can execute certification tests directly—ensuring safety compliance with minimal interruption. These features contribute to reduced maintenance cost and improved uptime, aligning perfectly with industrial safety management policies. Together with Emerson’s proven service record, the Rosemount 2120 stands as a cornerstone of modern automated monitoring systems.